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freebsd-dev/contrib/gcc/cp/search.c

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Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Breadth-first and depth-first routines for
searching multiple-inheritance lattice for GNU C++.
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Copyright (C) 1987, 89, 92-97, 1998, 1999 Free Software Foundation, Inc.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Contributed by Michael Tiemann (tiemann@cygnus.com)
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* High-level class interface. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#include "config.h"
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#include "system.h"
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#include "tree.h"
#include "cp-tree.h"
#include "obstack.h"
#include "flags.h"
#include "rtl.h"
#include "output.h"
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#include "toplev.h"
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
#include "varray.h"
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#define obstack_chunk_alloc xmalloc
#define obstack_chunk_free free
extern struct obstack *current_obstack;
extern tree abort_fndecl;
#include "stack.h"
/* Obstack used for remembering decision points of breadth-first. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static struct obstack search_obstack;
/* Methods for pushing and popping objects to and from obstacks. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
struct stack_level *
push_stack_level (obstack, tp, size)
struct obstack *obstack;
char *tp; /* Sony NewsOS 5.0 compiler doesn't like void * here. */
int size;
{
struct stack_level *stack;
obstack_grow (obstack, tp, size);
stack = (struct stack_level *) ((char*)obstack_next_free (obstack) - size);
obstack_finish (obstack);
stack->obstack = obstack;
stack->first = (tree *) obstack_base (obstack);
stack->limit = obstack_room (obstack) / sizeof (tree *);
return stack;
}
struct stack_level *
pop_stack_level (stack)
struct stack_level *stack;
{
struct stack_level *tem = stack;
struct obstack *obstack = tem->obstack;
stack = tem->prev;
obstack_free (obstack, tem);
return stack;
}
#define search_level stack_level
static struct search_level *search_stack;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
static tree get_abstract_virtuals_1 PROTO((tree, int, tree));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree next_baselink PROTO((tree));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
static tree get_vbase_1 PROTO((tree, tree, unsigned int *));
static tree convert_pointer_to_vbase PROTO((tree, tree));
static tree lookup_field_1 PROTO((tree, tree));
static tree convert_pointer_to_single_level PROTO((tree, tree));
static int lookup_fnfields_here PROTO((tree, tree));
static int is_subobject_of_p PROTO((tree, tree));
static int hides PROTO((tree, tree));
static tree virtual_context PROTO((tree, tree, tree));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree dfs_check_overlap PROTO((tree, void *));
static tree dfs_no_overlap_yet PROTO((tree, void *));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
static int get_base_distance_recursive
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
PROTO((tree, int, int, int, int *, tree *, tree,
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
int, int *, int, int));
static void expand_upcast_fixups
PROTO((tree, tree, tree, tree, tree, tree, tree *));
static void fixup_virtual_upcast_offsets
PROTO((tree, tree, int, int, tree, tree, tree, tree,
tree *));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree unmarkedp PROTO((tree, void *));
static tree marked_vtable_pathp PROTO((tree, void *));
static tree unmarked_vtable_pathp PROTO((tree, void *));
static tree marked_new_vtablep PROTO((tree, void *));
static tree unmarked_new_vtablep PROTO((tree, void *));
static tree marked_pushdecls_p PROTO((tree, void *));
static tree unmarked_pushdecls_p PROTO((tree, void *));
static tree dfs_debug_unmarkedp PROTO((tree, void *));
static tree dfs_debug_mark PROTO((tree, void *));
static tree dfs_find_vbases PROTO((tree, void *));
static tree dfs_clear_vbase_slots PROTO((tree, void *));
static tree dfs_init_vbase_pointers PROTO((tree, void *));
static tree dfs_get_vbase_types PROTO((tree, void *));
static tree dfs_push_type_decls PROTO((tree, void *));
static tree dfs_push_decls PROTO((tree, void *));
static tree dfs_unuse_fields PROTO((tree, void *));
static tree add_conversions PROTO((tree, void *));
static tree get_virtuals_named_this PROTO((tree, tree));
static tree get_virtual_destructor PROTO((tree, void *));
static tree tree_has_any_destructor_p PROTO((tree, void *));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
static int covariant_return_p PROTO((tree, tree));
static struct search_level *push_search_level
PROTO((struct stack_level *, struct obstack *));
static struct search_level *pop_search_level
PROTO((struct stack_level *));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree bfs_walk
PROTO((tree, tree (*) (tree, void *), tree (*) (tree, void *),
void *));
static tree lookup_field_queue_p PROTO((tree, void *));
static tree lookup_field_r PROTO((tree, void *));
static tree dfs_walk_real PROTO ((tree,
tree (*) (tree, void *),
tree (*) (tree, void *),
tree (*) (tree, void *),
void *));
static tree dfs_bfv_queue_p PROTO ((tree, void *));
static tree dfs_bfv_helper PROTO ((tree, void *));
static tree get_virtuals_named_this_r PROTO ((tree, void *));
static tree context_for_name_lookup PROTO ((tree));
static tree canonical_binfo PROTO ((tree));
static tree shared_marked_p PROTO ((tree, void *));
static tree shared_unmarked_p PROTO ((tree, void *));
static int dependent_base_p PROTO ((tree));
static tree dfs_accessible_queue_p PROTO ((tree, void *));
static tree dfs_accessible_p PROTO ((tree, void *));
static tree dfs_access_in_type PROTO ((tree, void *));
static tree access_in_type PROTO ((tree, tree));
static tree dfs_canonical_queue PROTO ((tree, void *));
static tree dfs_assert_unmarked_p PROTO ((tree, void *));
static void assert_canonical_unmarked PROTO ((tree));
static int protected_accessible_p PROTO ((tree, tree, tree, tree));
static int friend_accessible_p PROTO ((tree, tree, tree, tree));
static void setup_class_bindings PROTO ((tree, int));
static int template_self_reference_p PROTO ((tree, tree));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Allocate a level of searching. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static struct search_level *
push_search_level (stack, obstack)
struct stack_level *stack;
struct obstack *obstack;
{
struct search_level tem;
tem.prev = stack;
return push_stack_level (obstack, (char *)&tem, sizeof (tem));
}
/* Discard a level of search allocation. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static struct search_level *
pop_search_level (obstack)
struct stack_level *obstack;
{
register struct search_level *stack = pop_stack_level (obstack);
return stack;
}
static tree _vptr_name;
/* Variables for gathering statistics. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#ifdef GATHER_STATISTICS
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static int n_fields_searched;
static int n_calls_lookup_field, n_calls_lookup_field_1;
static int n_calls_lookup_fnfields, n_calls_lookup_fnfields_1;
static int n_calls_get_base_type;
static int n_outer_fields_searched;
static int n_contexts_saved;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif /* GATHER_STATISTICS */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Get a virtual binfo that is found inside BINFO's hierarchy that is
the same type as the type given in PARENT. To be optimal, we want
the first one that is found by going through the least number of
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
virtual bases.
This uses a clever algorithm that updates *depth when we find the vbase,
and cuts off other paths of search when they reach that depth. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static tree
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
get_vbase_1 (parent, binfo, depth)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree parent, binfo;
unsigned int *depth;
{
tree binfos;
int i, n_baselinks;
tree rval = NULL_TREE;
if (BINFO_TYPE (binfo) == parent && TREE_VIA_VIRTUAL (binfo))
{
*depth = 0;
return binfo;
}
*depth = *depth - 1;
binfos = BINFO_BASETYPES (binfo);
n_baselinks = binfos ? TREE_VEC_LENGTH (binfos) : 0;
/* Process base types. */
for (i = 0; i < n_baselinks; i++)
{
tree base_binfo = TREE_VEC_ELT (binfos, i);
tree nrval;
if (*depth == 0)
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
nrval = get_vbase_1 (parent, base_binfo, depth);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (nrval)
rval = nrval;
}
*depth = *depth+1;
return rval;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Return the shortest path to vbase PARENT within BINFO, ignoring
access and ambiguity. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree
get_vbase (parent, binfo)
tree parent;
tree binfo;
{
unsigned int d = (unsigned int)-1;
return get_vbase_1 (parent, binfo, &d);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Convert EXPR to a virtual base class of type TYPE. We know that
EXPR is a non-null POINTER_TYPE to RECORD_TYPE. We also know that
the type of what expr points to has a virtual base of type TYPE. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
static tree
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
convert_pointer_to_vbase (type, expr)
tree type;
tree expr;
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree vb = get_vbase (type, TYPE_BINFO (TREE_TYPE (TREE_TYPE (expr))));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
return convert_pointer_to_real (vb, expr);
}
/* Check whether the type given in BINFO is derived from PARENT. If
it isn't, return 0. If it is, but the derivation is MI-ambiguous
AND protect != 0, emit an error message and return error_mark_node.
Otherwise, if TYPE is derived from PARENT, return the actual base
information, unless a one of the protection violations below
occurs, in which case emit an error message and return error_mark_node.
If PROTECT is 1, then check if access to a public field of PARENT
would be private. Also check for ambiguity. */
tree
get_binfo (parent, binfo, protect)
register tree parent, binfo;
int protect;
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree type = NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
int dist;
tree rval = NULL_TREE;
if (TREE_CODE (parent) == TREE_VEC)
parent = BINFO_TYPE (parent);
else if (! IS_AGGR_TYPE_CODE (TREE_CODE (parent)))
my_friendly_abort (89);
if (TREE_CODE (binfo) == TREE_VEC)
type = BINFO_TYPE (binfo);
else if (IS_AGGR_TYPE_CODE (TREE_CODE (binfo)))
type = binfo;
else
my_friendly_abort (90);
dist = get_base_distance (parent, binfo, protect, &rval);
if (dist == -3)
{
cp_error ("fields of `%T' are inaccessible in `%T' due to private inheritance",
parent, type);
return error_mark_node;
}
else if (dist == -2 && protect)
{
cp_error ("type `%T' is ambiguous base class for type `%T'", parent,
type);
return error_mark_node;
}
return rval;
}
/* This is the newer depth first get_base_distance routine. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static int
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
get_base_distance_recursive (binfo, depth, is_private, rval,
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
rval_private_ptr, new_binfo_ptr, parent,
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
protect, via_virtual_ptr, via_virtual,
current_scope_in_chain)
tree binfo;
int depth, is_private, rval;
int *rval_private_ptr;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree *new_binfo_ptr, parent;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
int protect, *via_virtual_ptr, via_virtual;
int current_scope_in_chain;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
tree binfos;
int i, n_baselinks;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
if (protect
&& !current_scope_in_chain
&& is_friend (BINFO_TYPE (binfo), current_scope ()))
current_scope_in_chain = 1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (BINFO_TYPE (binfo) == parent || binfo == parent)
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int better = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (rval == -1)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* This is the first time we've found parent. */
better = 1;
else if (tree_int_cst_equal (BINFO_OFFSET (*new_binfo_ptr),
BINFO_OFFSET (binfo))
&& *via_virtual_ptr && via_virtual)
{
/* A new path to the same vbase. If this one has better
access or is shorter, take it. */
if (protect)
better = *rval_private_ptr - is_private;
if (better == 0)
better = rval - depth;
}
else
{
/* Ambiguous base class. */
rval = depth = -2;
/* If we get an ambiguity between virtual and non-virtual base
class, return the non-virtual in case we are ignoring
ambiguity. */
better = *via_virtual_ptr - via_virtual;
}
if (better > 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
rval = depth;
*rval_private_ptr = is_private;
*new_binfo_ptr = binfo;
*via_virtual_ptr = via_virtual;
}
return rval;
}
binfos = BINFO_BASETYPES (binfo);
n_baselinks = binfos ? TREE_VEC_LENGTH (binfos) : 0;
depth += 1;
/* Process base types. */
for (i = 0; i < n_baselinks; i++)
{
tree base_binfo = TREE_VEC_ELT (binfos, i);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int via_private
= (protect
&& (is_private
|| (!TREE_VIA_PUBLIC (base_binfo)
&& !(TREE_VIA_PROTECTED (base_binfo)
&& current_scope_in_chain)
&& !is_friend (BINFO_TYPE (binfo), current_scope ()))));
int this_virtual = via_virtual || TREE_VIA_VIRTUAL (base_binfo);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
rval = get_base_distance_recursive (base_binfo, depth, via_private,
rval, rval_private_ptr,
new_binfo_ptr, parent,
protect, via_virtual_ptr,
this_virtual,
current_scope_in_chain);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If we've found a non-virtual, ambiguous base class, we don't need
to keep searching. */
if (rval == -2 && *via_virtual_ptr == 0)
return rval;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
return rval;
}
/* Return the number of levels between type PARENT and the type given
in BINFO, following the leftmost path to PARENT not found along a
virtual path, if there are no real PARENTs (all come from virtual
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
base classes), then follow the shortest public path to PARENT.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Return -1 if TYPE is not derived from PARENT.
Return -2 if PARENT is an ambiguous base class of TYPE, and PROTECT is
non-negative.
Return -3 if PARENT is private to TYPE, and PROTECT is non-zero.
If PATH_PTR is non-NULL, then also build the list of types
from PARENT to TYPE, with TREE_VIA_VIRTUAL and TREE_VIA_PUBLIC
set.
PARENT can also be a binfo, in which case that exact parent is found
and no other. convert_pointer_to_real uses this functionality.
If BINFO is a binfo, its BINFO_INHERITANCE_CHAIN will be left alone. */
int
get_base_distance (parent, binfo, protect, path_ptr)
register tree parent, binfo;
int protect;
tree *path_ptr;
{
int rval;
int rval_private = 0;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree type = NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree new_binfo = NULL_TREE;
int via_virtual;
int watch_access = protect;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Should we be completing types here? */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (TREE_CODE (parent) != TREE_VEC)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
parent = complete_type (TYPE_MAIN_VARIANT (parent));
else
complete_type (TREE_TYPE (parent));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (TREE_CODE (binfo) == TREE_VEC)
type = BINFO_TYPE (binfo);
else if (IS_AGGR_TYPE_CODE (TREE_CODE (binfo)))
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
type = complete_type (binfo);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
binfo = TYPE_BINFO (type);
if (path_ptr)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
my_friendly_assert (BINFO_INHERITANCE_CHAIN (binfo) == NULL_TREE,
980827);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
else
my_friendly_abort (92);
if (parent == type || parent == binfo)
{
/* If the distance is 0, then we don't really need
a path pointer, but we shouldn't let garbage go back. */
if (path_ptr)
*path_ptr = binfo;
return 0;
}
if (path_ptr)
watch_access = 1;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
rval = get_base_distance_recursive (binfo, 0, 0, -1,
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
&rval_private, &new_binfo, parent,
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
watch_access, &via_virtual, 0,
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Access restrictions don't count if we found an ambiguous basetype. */
if (rval == -2 && protect >= 0)
rval_private = 0;
if (rval && protect && rval_private)
return -3;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If they gave us the real vbase binfo, which isn't in the main binfo
tree, deal with it. This happens when we are called from
expand_upcast_fixups. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (rval == -1 && TREE_CODE (parent) == TREE_VEC
&& parent == binfo_member (BINFO_TYPE (parent),
CLASSTYPE_VBASECLASSES (type)))
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
my_friendly_assert (BINFO_INHERITANCE_CHAIN (parent) == binfo, 980827);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
new_binfo = parent;
rval = 1;
}
if (path_ptr)
*path_ptr = new_binfo;
return rval;
}
/* Search for a member with name NAME in a multiple inheritance lattice
specified by TYPE. If it does not exist, return NULL_TREE.
If the member is ambiguously referenced, return `error_mark_node'.
Otherwise, return the FIELD_DECL. */
/* Do a 1-level search for NAME as a member of TYPE. The caller must
figure out whether it can access this field. (Since it is only one
level, this is reasonable.) */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static tree
lookup_field_1 (type, name)
tree type, name;
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
register tree field;
if (TREE_CODE (type) == TEMPLATE_TYPE_PARM
|| TREE_CODE (type) == TEMPLATE_TEMPLATE_PARM)
/* The TYPE_FIELDS of a TEMPLATE_TYPE_PARM are not fields at all;
instead TYPE_FIELDS is the TEMPLATE_PARM_INDEX. (Miraculously,
the code often worked even when we treated the index as a list
of fields!) */
return NULL_TREE;
field = TYPE_FIELDS (type);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#ifdef GATHER_STATISTICS
n_calls_lookup_field_1++;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif /* GATHER_STATISTICS */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
while (field)
{
#ifdef GATHER_STATISTICS
n_fields_searched++;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif /* GATHER_STATISTICS */
my_friendly_assert (TREE_CODE_CLASS (TREE_CODE (field)) == 'd', 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (DECL_NAME (field) == NULL_TREE
&& TREE_CODE (TREE_TYPE (field)) == UNION_TYPE)
{
tree temp = lookup_field_1 (TREE_TYPE (field), name);
if (temp)
return temp;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (TREE_CODE (field) == USING_DECL)
/* For now, we're just treating member using declarations as
old ARM-style access declarations. Thus, there's no reason
to return a USING_DECL, and the rest of the compiler can't
handle it. Once the class is defined, these are purged
from TYPE_FIELDS anyhow; see handle_using_decl. */
;
else if (DECL_NAME (field) == name)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
if ((TREE_CODE(field) == VAR_DECL || TREE_CODE(field) == CONST_DECL)
&& DECL_ASSEMBLER_NAME (field) != NULL)
GNU_xref_ref(current_function_decl,
IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (field)));
return field;
}
field = TREE_CHAIN (field);
}
/* Not found. */
if (name == _vptr_name)
{
/* Give the user what s/he thinks s/he wants. */
if (TYPE_VIRTUAL_P (type))
return CLASSTYPE_VFIELD (type);
}
return NULL_TREE;
}
/* There are a number of cases we need to be aware of here:
current_class_type current_function_decl
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
global NULL NULL
fn-local NULL SET
class-local SET NULL
class->fn SET SET
fn->class SET SET
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Those last two make life interesting. If we're in a function which is
itself inside a class, we need decls to go into the fn's decls (our
second case below). But if we're in a class and the class itself is
inside a function, we need decls to go into the decls for the class. To
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
achieve this last goal, we must see if, when both current_class_ptr and
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
current_function_decl are set, the class was declared inside that
function. If so, we know to put the decls into the class's scope. */
tree
current_scope ()
{
if (current_function_decl == NULL_TREE)
return current_class_type;
if (current_class_type == NULL_TREE)
return current_function_decl;
if (DECL_CLASS_CONTEXT (current_function_decl) == current_class_type)
return current_function_decl;
return current_class_type;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Return the scope of DECL, as appropriate when doing name-lookup. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
context_for_name_lookup (decl)
tree decl;
{
/* [class.union]
For the purposes of name lookup, after the anonymous union
definition, the members of the anonymous union are considered to
have been defined in the scope in which teh anonymous union is
declared. */
tree context = DECL_REAL_CONTEXT (decl);
while (TYPE_P (context) && ANON_UNION_TYPE_P (context))
context = TYPE_CONTEXT (context);
if (!context)
context = global_namespace;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return context;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Return a canonical BINFO if BINFO is a virtual base, or just BINFO
otherwise. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
canonical_binfo (binfo)
tree binfo;
{
return (TREE_VIA_VIRTUAL (binfo)
? TYPE_BINFO (BINFO_TYPE (binfo)) : binfo);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* A queue function that simply ensures that we walk into the
canonical versions of virtual bases. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_canonical_queue (binfo, data)
tree binfo;
void *data ATTRIBUTE_UNUSED;
{
return canonical_binfo (binfo);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Called via dfs_walk from assert_canonical_unmarked. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_assert_unmarked_p (binfo, data)
tree binfo;
void *data ATTRIBUTE_UNUSED;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
my_friendly_assert (!BINFO_MARKED (binfo), 0);
return NULL_TREE;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Asserts that all the nodes below BINFO (using the canonical
versions of virtual bases) are unmarked. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
assert_canonical_unmarked (binfo)
tree binfo;
{
dfs_walk (binfo, dfs_assert_unmarked_p, dfs_canonical_queue, 0);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If BINFO is marked, return a canonical version of BINFO.
Otherwise, return NULL_TREE. */
static tree
shared_marked_p (binfo, data)
tree binfo;
void *data;
{
binfo = canonical_binfo (binfo);
return markedp (binfo, data) ? binfo : NULL_TREE;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If BINFO is not marked, return a canonical version of BINFO.
Otherwise, return NULL_TREE. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
shared_unmarked_p (binfo, data)
tree binfo;
void *data;
{
binfo = canonical_binfo (binfo);
return unmarkedp (binfo, data) ? binfo : NULL_TREE;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Called from access_in_type via dfs_walk. Calculate the access to
DATA (which is really a DECL) in BINFO. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_access_in_type (binfo, data)
tree binfo;
void *data;
{
tree decl = (tree) data;
tree type = BINFO_TYPE (binfo);
tree access = NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (context_for_name_lookup (decl) == type)
{
/* If we have desceneded to the scope of DECL, just note the
appropriate access. */
if (TREE_PRIVATE (decl))
access = access_private_node;
else if (TREE_PROTECTED (decl))
access = access_protected_node;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
access = access_public_node;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
else
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* First, check for an access-declaration that gives us more
access to the DECL. The CONST_DECL for an enumeration
constant will not have DECL_LANG_SPECIFIC, and thus no
DECL_ACCESS. */
if (DECL_LANG_SPECIFIC (decl))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
access = purpose_member (type, DECL_ACCESS (decl));
if (access)
access = TREE_VALUE (access);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (!access)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int i;
int n_baselinks;
tree binfos;
/* Otherwise, scan our baseclasses, and pick the most favorable
access. */
binfos = BINFO_BASETYPES (binfo);
n_baselinks = binfos ? TREE_VEC_LENGTH (binfos) : 0;
for (i = 0; i < n_baselinks; ++i)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree base_binfo = TREE_VEC_ELT (binfos, i);
tree base_access = TREE_CHAIN (canonical_binfo (base_binfo));
if (!base_access || base_access == access_private_node)
/* If it was not accessible in the base, or only
accessible as a private member, we can't access it
all. */
base_access = NULL_TREE;
else if (TREE_VIA_PROTECTED (base_binfo))
/* Public and protected members in the base are
protected here. */
base_access = access_protected_node;
else if (!TREE_VIA_PUBLIC (base_binfo))
/* Public and protected members in the base are
private here. */
base_access = access_private_node;
/* See if the new access, via this base, gives more
access than our previous best access. */
if (base_access &&
(base_access == access_public_node
|| (base_access == access_protected_node
&& access != access_public_node)
|| (base_access == access_private_node
&& !access)))
{
access = base_access;
/* If the new access is public, we can't do better. */
if (access == access_public_node)
break;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Note the access to DECL in TYPE. */
TREE_CHAIN (binfo) = access;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Mark TYPE as visited so that if we reach it again we do not
duplicate our efforts here. */
SET_BINFO_MARKED (binfo);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Return the access to DECL in TYPE. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
access_in_type (type, decl)
tree type;
tree decl;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree binfo = TYPE_BINFO (type);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* We must take into account
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
[class.paths]
If a name can be reached by several paths through a multiple
inheritance graph, the access is that of the path that gives
most access.
The algorithm we use is to make a post-order depth-first traversal
of the base-class hierarchy. As we come up the tree, we annotate
each node with the most lenient access. */
dfs_walk_real (binfo, 0, dfs_access_in_type, shared_unmarked_p, decl);
dfs_walk (binfo, dfs_unmark, shared_marked_p, 0);
assert_canonical_unmarked (binfo);
return TREE_CHAIN (binfo);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Called from dfs_accessible_p via dfs_walk. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_accessible_queue_p (binfo, data)
tree binfo;
void *data ATTRIBUTE_UNUSED;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (BINFO_MARKED (binfo))
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If this class is inherited via private or protected inheritance,
then we can't see it, unless we are a friend of the subclass. */
if (!TREE_VIA_PUBLIC (binfo)
&& !is_friend (BINFO_TYPE (BINFO_INHERITANCE_CHAIN (binfo)),
current_scope ()))
return NULL_TREE;
return canonical_binfo (binfo);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Called from dfs_accessible_p via dfs_walk. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_accessible_p (binfo, data)
tree binfo;
void *data;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int protected_ok = data != 0;
tree access;
/* We marked the binfos while computing the access in each type.
So, we unmark as we go now. */
SET_BINFO_MARKED (binfo);
access = TREE_CHAIN (binfo);
if (access == access_public_node
|| (access == access_protected_node && protected_ok))
return binfo;
else if (access && is_friend (BINFO_TYPE (binfo), current_scope ()))
return binfo;
return NULL_TREE;
}
/* Returns non-zero if it is OK to access DECL when named in TYPE
through an object indiated by BINFO in the context of DERIVED. */
static int
protected_accessible_p (type, decl, derived, binfo)
tree type;
tree decl;
tree derived;
tree binfo;
{
tree access;
/* We're checking this clause from [class.access.base]
m as a member of N is protected, and the reference occurs in a
member or friend of class N, or in a member or friend of a
class P derived from N, where m as a member of P is private or
protected.
If DERIVED isn't derived from TYPE, then it certainly does not
apply. */
if (!DERIVED_FROM_P (type, derived))
return 0;
access = access_in_type (derived, decl);
if (same_type_p (derived, type))
{
if (access != access_private_node)
return 0;
}
else if (access != access_private_node
&& access != access_protected_node)
return 0;
/* [class.protected]
When a friend or a member function of a derived class references
a protected nonstatic member of a base class, an access check
applies in addition to those described earlier in clause
_class.access_.4) Except when forming a pointer to member
(_expr.unary.op_), the access must be through a pointer to,
reference to, or object of the derived class itself (or any class
derived from that class) (_expr.ref_). If the access is to form
a pointer to member, the nested-name-specifier shall name the
derived class (or any class derived from that class). */
if (DECL_NONSTATIC_MEMBER_P (decl))
{
/* We can tell through what the reference is occurring by
chasing BINFO up to the root. */
tree t = binfo;
while (BINFO_INHERITANCE_CHAIN (t))
t = BINFO_INHERITANCE_CHAIN (t);
if (!DERIVED_FROM_P (derived, BINFO_TYPE (t)))
return 0;
}
return 1;
}
/* Returns non-zero if SCOPE is a friend of a type which would be able
to acces DECL, named in TYPE, through the object indicated by
BINFO. */
static int
friend_accessible_p (scope, type, decl, binfo)
tree scope;
tree type;
tree decl;
tree binfo;
{
tree befriending_classes;
tree t;
if (!scope)
return 0;
if (TREE_CODE (scope) == FUNCTION_DECL
|| DECL_FUNCTION_TEMPLATE_P (scope))
befriending_classes = DECL_BEFRIENDING_CLASSES (scope);
else if (TYPE_P (scope))
befriending_classes = CLASSTYPE_BEFRIENDING_CLASSES (scope);
else
return 0;
for (t = befriending_classes; t; t = TREE_CHAIN (t))
if (protected_accessible_p (type, decl, TREE_VALUE (t), binfo))
return 1;
if (TREE_CODE (scope) == FUNCTION_DECL
|| DECL_FUNCTION_TEMPLATE_P (scope))
{
/* Perhaps this SCOPE is a member of a class which is a
friend. */
if (friend_accessible_p (DECL_CLASS_CONTEXT (scope), type,
decl, binfo))
return 1;
/* Or an instantiation of something which is a friend. */
if (DECL_TEMPLATE_INFO (scope))
return friend_accessible_p (DECL_TI_TEMPLATE (scope),
type, decl, binfo);
}
else if (CLASSTYPE_TEMPLATE_INFO (scope))
return friend_accessible_p (CLASSTYPE_TI_TEMPLATE (scope),
type, decl, binfo);
return 0;
}
/* DECL is a declaration from a base class of TYPE, which was the
classs used to name DECL. Return non-zero if, in the current
context, DECL is accessible. If TYPE is actually a BINFO node,
then we can tell in what context the access is occurring by looking
at the most derived class along the path indicated by BINFO. */
int
accessible_p (type, decl)
tree type;
tree decl;
{
tree binfo;
tree t;
/* Non-zero if it's OK to access DECL if it has protected
accessibility in TYPE. */
int protected_ok = 0;
/* If we're not checking access, everything is accessible. */
if (!flag_access_control)
return 1;
/* If this declaration is in a block or namespace scope, there's no
access control. */
if (!TYPE_P (context_for_name_lookup (decl)))
return 1;
/* We don't do access control for types yet. */
if (TREE_CODE (decl) == TYPE_DECL)
return 1;
if (!TYPE_P (type))
{
binfo = type;
type = BINFO_TYPE (type);
}
else
binfo = TYPE_BINFO (type);
/* [class.access.base]
A member m is accessible when named in class N if
--m as a member of N is public, or
--m as a member of N is private, and the reference occurs in a
member or friend of class N, or
--m as a member of N is protected, and the reference occurs in a
member or friend of class N, or in a member or friend of a
class P derived from N, where m as a member of P is private or
protected, or
--there exists a base class B of N that is accessible at the point
of reference, and m is accessible when named in class B.
We walk the base class hierarchy, checking these conditions. */
/* Figure out where the reference is occurring. Check to see if
DECL is private or protected in this scope, since that will
determine whether protected access in TYPE allowed. */
if (current_class_type)
protected_ok
= protected_accessible_p (type, decl, current_class_type,
binfo);
/* Now, loop through the classes of which we are a friend. */
if (!protected_ok)
protected_ok = friend_accessible_p (current_scope (),
type, decl, binfo);
/* Standardize on the same that will access_in_type will use. We
don't need to know what path was chosen from this point onwards. */
binfo = TYPE_BINFO (type);
/* Compute the accessibility of DECL in the class hierarchy
dominated by type. */
access_in_type (type, decl);
/* Walk the hierarchy again, looking for a base class that allows
access. */
t = dfs_walk (binfo, dfs_accessible_p,
dfs_accessible_queue_p,
protected_ok ? &protected_ok : 0);
/* Clear any mark bits. Note that we have to walk the whole tree
here, since we have aborted the previous walk from some point
deep in the tree. */
dfs_walk (binfo, dfs_unmark, dfs_canonical_queue, 0);
assert_canonical_unmarked (binfo);
return t != NULL_TREE;
}
/* Routine to see if the sub-object denoted by the binfo PARENT can be
found as a base class and sub-object of the object denoted by
BINFO. This routine relies upon binfos not being shared, except
for binfos for virtual bases. */
static int
is_subobject_of_p (parent, binfo)
tree parent, binfo;
{
tree binfos;
int i, n_baselinks;
/* We want to canonicalize for comparison purposes. But, when we
iterate through basetypes later, we want the binfos from the
original hierarchy. That's why we have to calculate BINFOS
first, and then canonicalize. */
binfos = BINFO_BASETYPES (binfo);
parent = canonical_binfo (parent);
binfo = canonical_binfo (binfo);
if (parent == binfo)
return 1;
n_baselinks = binfos ? TREE_VEC_LENGTH (binfos) : 0;
/* Process and/or queue base types. */
for (i = 0; i < n_baselinks; i++)
{
tree base_binfo = TREE_VEC_ELT (binfos, i);
if (!CLASS_TYPE_P (TREE_TYPE (base_binfo)))
/* If we see a TEMPLATE_TYPE_PARM, or some such, as a base
class there's no way to descend into it. */
continue;
if (is_subobject_of_p (parent, base_binfo))
return 1;
}
return 0;
}
/* See if a one FIELD_DECL hides another. This routine is meant to
correspond to ANSI working paper Sept 17, 1992 10p4. The two
binfos given are the binfos corresponding to the particular places
the FIELD_DECLs are found. This routine relies upon binfos not
being shared, except for virtual bases. */
static int
hides (hider_binfo, hidee_binfo)
tree hider_binfo, hidee_binfo;
{
/* hider hides hidee, if hider has hidee as a base class and
the instance of hidee is a sub-object of hider. The first
part is always true is the second part is true.
When hider and hidee are the same (two ways to get to the exact
same member) we consider either one as hiding the other. */
return is_subobject_of_p (hidee_binfo, hider_binfo);
}
/* Very similar to lookup_fnfields_1 but it ensures that at least one
function was declared inside the class given by TYPE. It really should
only return functions that match the given TYPE. */
static int
lookup_fnfields_here (type, name)
tree type, name;
{
int idx = lookup_fnfields_1 (type, name);
tree fndecls;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* ctors and dtors are always only in the right class. */
if (idx <= 1)
return idx;
fndecls = TREE_VEC_ELT (CLASSTYPE_METHOD_VEC (type), idx);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
while (fndecls)
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
if (TYPE_MAIN_VARIANT (DECL_CLASS_CONTEXT (OVL_CURRENT (fndecls)))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
== TYPE_MAIN_VARIANT (type))
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
return idx;
fndecls = OVL_CHAIN (fndecls);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
return -1;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct lookup_field_info {
/* The type in which we're looking. */
tree type;
/* The name of the field for which we're looking. */
tree name;
/* If non-NULL, the current result of the lookup. */
tree rval;
/* The path to RVAL. */
tree rval_binfo;
/* If non-NULL, the lookup was ambiguous, and this is a list of the
candidates. */
tree ambiguous;
/* If non-zero, we are looking for types, not data members. */
int want_type;
/* If non-zero, RVAL was found by looking through a dependent base. */
int from_dep_base_p;
/* If something went wrong, a message indicating what. */
const char *errstr;
};
/* Returns non-zero if BINFO is not hidden by the value found by the
lookup so far. If BINFO is hidden, then there's no need to look in
it. DATA is really a struct lookup_field_info. Called from
lookup_field via breadth_first_search. */
static tree
lookup_field_queue_p (binfo, data)
tree binfo;
void *data;
{
struct lookup_field_info *lfi = (struct lookup_field_info *) data;
/* Don't look for constructors or destructors in base classes. */
if (lfi->name == ctor_identifier || lfi->name == dtor_identifier)
return NULL_TREE;
/* If this base class is hidden by the best-known value so far, we
don't need to look. */
if (!lfi->from_dep_base_p && lfi->rval_binfo
&& hides (lfi->rval_binfo, binfo))
return NULL_TREE;
if (TREE_VIA_VIRTUAL (binfo))
return binfo_member (BINFO_TYPE (binfo),
CLASSTYPE_VBASECLASSES (lfi->type));
else
return binfo;
}
/* Within the scope of a template class, you can refer to the
particular to the current specialization with the name of the
template itself. For example:
template <typename T> struct S { S* sp; }
Returns non-zero if DECL is such a declaration in a class TYPE. */
static int
template_self_reference_p (type, decl)
tree type;
tree decl;
{
return (CLASSTYPE_USE_TEMPLATE (type)
&& PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (type))
&& TREE_CODE (decl) == TYPE_DECL
&& DECL_ARTIFICIAL (decl)
&& DECL_NAME (decl) == constructor_name (type));
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* DATA is really a struct lookup_field_info. Look for a field with
the name indicated there in BINFO. If this function returns a
non-NULL value it is the result of the lookup. Called from
lookup_field via breadth_first_search. */
static tree
lookup_field_r (binfo, data)
tree binfo;
void *data;
{
struct lookup_field_info *lfi = (struct lookup_field_info *) data;
tree type = BINFO_TYPE (binfo);
tree nval = NULL_TREE;
int from_dep_base_p;
/* First, look for a function. There can't be a function and a data
member with the same name, and if there's a function and a type
with the same name, the type is hidden by the function. */
if (!lfi->want_type)
{
int idx = lookup_fnfields_here (type, lfi->name);
if (idx >= 0)
nval = TREE_VEC_ELT (CLASSTYPE_METHOD_VEC (type), idx);
}
if (!nval)
/* Look for a data member or type. */
nval = lookup_field_1 (type, lfi->name);
/* If there is no declaration with the indicated name in this type,
then there's nothing to do. */
if (!nval)
return NULL_TREE;
/* If we're looking up a type (as with an elaborated type specifier)
we ignore all non-types we find. */
if (lfi->want_type && TREE_CODE (nval) != TYPE_DECL)
{
nval = purpose_member (lfi->name, CLASSTYPE_TAGS (type));
if (nval)
nval = TYPE_MAIN_DECL (TREE_VALUE (nval));
else
return NULL_TREE;
}
/* You must name a template base class with a template-id. */
if (!same_type_p (type, lfi->type)
&& template_self_reference_p (type, nval))
return NULL_TREE;
from_dep_base_p = dependent_base_p (binfo);
if (lfi->from_dep_base_p && !from_dep_base_p)
{
/* If the new declaration is not found via a dependent base, and
the old one was, then we must prefer the new one. We weren't
really supposed to be able to find the old one, so we don't
want to be affected by a specialization. Consider:
struct B { typedef int I; };
template <typename T> struct D1 : virtual public B {};
template <typename T> struct D :
public D1, virtual pubic B { I i; };
The `I' in `D<T>' is unambigousuly `B::I', regardless of how
D1 is specialized. */
lfi->from_dep_base_p = 0;
lfi->rval = NULL_TREE;
lfi->rval_binfo = NULL_TREE;
lfi->ambiguous = NULL_TREE;
lfi->errstr = 0;
}
else if (lfi->rval_binfo && !lfi->from_dep_base_p && from_dep_base_p)
/* Similarly, if the old declaration was not found via a dependent
base, and the new one is, ignore the new one. */
return NULL_TREE;
/* If the lookup already found a match, and the new value doesn't
hide the old one, we might have an ambiguity. */
if (lfi->rval_binfo && !hides (binfo, lfi->rval_binfo))
{
if (nval == lfi->rval && SHARED_MEMBER_P (nval))
/* The two things are really the same. */
;
else if (hides (lfi->rval_binfo, binfo))
/* The previous value hides the new one. */
;
else
{
/* We have a real ambiguity. We keep a chain of all the
candidates. */
if (!lfi->ambiguous && lfi->rval)
{
/* This is the first time we noticed an ambiguity. Add
what we previously thought was a reasonable candidate
to the list. */
lfi->ambiguous = scratch_tree_cons (NULL_TREE, lfi->rval,
NULL_TREE);
TREE_TYPE (lfi->ambiguous) = error_mark_node;
}
/* Add the new value. */
lfi->ambiguous = scratch_tree_cons (NULL_TREE, nval,
lfi->ambiguous);
TREE_TYPE (lfi->ambiguous) = error_mark_node;
lfi->errstr = "request for member `%D' is ambiguous";
}
}
else
{
/* If the thing we're looking for is a virtual base class, then
we know we've got what we want at this point; there's no way
to get an ambiguity. */
if (VBASE_NAME_P (lfi->name))
{
lfi->rval = nval;
return nval;
}
if (from_dep_base_p && TREE_CODE (nval) != TYPE_DECL
/* We need to return a member template class so we can
define partial specializations. Is there a better
way? */
&& !DECL_CLASS_TEMPLATE_P (nval))
/* The thing we're looking for isn't a type, so the implicit
typename extension doesn't apply, so we just pretend we
didn't find anything. */
return NULL_TREE;
lfi->rval = nval;
lfi->from_dep_base_p = from_dep_base_p;
lfi->rval_binfo = binfo;
}
return NULL_TREE;
}
/* Look for a memer named NAME in an inheritance lattice dominated by
XBASETYPE. PROTECT is 0 or two, we do not check access. If it is
1, we enforce accessibility. If PROTECT is zero, then, for an
ambiguous lookup, we return NULL. If PROTECT is 1, we issue an
error message. If PROTECT is 2, we return a TREE_LIST whose
TREEE_TYPE is error_mark_node and whose TREE_VALUEs are the list of
ambiguous candidates.
WANT_TYPE is 1 when we should only return TYPE_DECLs, if no
TYPE_DECL can be found return NULL_TREE. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
lookup_member (xbasetype, name, protect, want_type)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
register tree xbasetype, name;
int protect, want_type;
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree rval, rval_binfo = NULL_TREE;
tree type = NULL_TREE, basetype_path = NULL_TREE;
struct lookup_field_info lfi;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* rval_binfo is the binfo associated with the found member, note,
this can be set with useful information, even when rval is not
set, because it must deal with ALL members, not just non-function
members. It is used for ambiguity checking and the hidden
checks. Whereas rval is only set if a proper (not hidden)
non-function member is found. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
const char *errstr = 0;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
if (xbasetype == current_class_type && TYPE_BEING_DEFINED (xbasetype)
&& IDENTIFIER_CLASS_VALUE (name))
{
tree field = IDENTIFIER_CLASS_VALUE (name);
if (TREE_CODE (field) != FUNCTION_DECL
&& ! (want_type && TREE_CODE (field) != TYPE_DECL))
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* We're in the scope of this class, and the value has already
been looked up. Just return the cached value. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
return field;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (TREE_CODE (xbasetype) == TREE_VEC)
{
type = BINFO_TYPE (xbasetype);
basetype_path = xbasetype;
}
else if (IS_AGGR_TYPE_CODE (TREE_CODE (xbasetype)))
{
type = xbasetype;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
basetype_path = TYPE_BINFO (type);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
my_friendly_assert (BINFO_INHERITANCE_CHAIN (basetype_path) == NULL_TREE,
980827);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
else
my_friendly_abort (97);
complete_type (type);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#ifdef GATHER_STATISTICS
n_calls_lookup_field++;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif /* GATHER_STATISTICS */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
bzero ((PTR) &lfi, sizeof (lfi));
lfi.type = type;
lfi.name = name;
lfi.want_type = want_type;
bfs_walk (basetype_path, &lookup_field_r, &lookup_field_queue_p, &lfi);
rval = lfi.rval;
rval_binfo = lfi.rval_binfo;
if (rval_binfo)
type = BINFO_TYPE (rval_binfo);
errstr = lfi.errstr;
/* If we are not interested in ambiguities, don't report them;
just return NULL_TREE. */
if (!protect && lfi.ambiguous)
return NULL_TREE;
if (protect == 2)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (lfi.ambiguous)
return lfi.ambiguous;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
protect = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* [class.access]
In the case of overloaded function names, access control is
applied to the function selected by overloaded resolution. */
if (rval && protect && !is_overloaded_fn (rval)
&& !IS_SIGNATURE_POINTER (DECL_REAL_CONTEXT (rval))
&& !IS_SIGNATURE_REFERENCE (DECL_REAL_CONTEXT (rval))
&& !enforce_access (xbasetype, rval))
return error_mark_node;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (errstr && protect)
{
cp_error (errstr, name, type);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (lfi.ambiguous)
print_candidates (lfi.ambiguous);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
rval = error_mark_node;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If the thing we found was found via the implicit typename
extension, build the typename type. */
if (rval && lfi.from_dep_base_p && !DECL_CLASS_TEMPLATE_P (rval))
rval = TYPE_STUB_DECL (build_typename_type (BINFO_TYPE (basetype_path),
name, name,
TREE_TYPE (rval)));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (rval && is_overloaded_fn (rval))
{
rval = scratch_tree_cons (basetype_path, rval, NULL_TREE);
SET_BASELINK_P (rval);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
return rval;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Like lookup_member, except that if we find a function member we
return NULL_TREE. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
lookup_field (xbasetype, name, protect, want_type)
register tree xbasetype, name;
int protect, want_type;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree rval = lookup_member (xbasetype, name, protect, want_type);
/* Ignore functions. */
if (rval && TREE_CODE (rval) == TREE_LIST)
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return rval;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Like lookup_member, except that if we find a non-function member we
return NULL_TREE. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree
lookup_fnfields (xbasetype, name, protect)
register tree xbasetype, name;
int protect;
{
tree rval = lookup_member (xbasetype, name, protect, /*want_type=*/0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Ignore non-functions. */
if (rval && TREE_CODE (rval) != TREE_LIST)
return NULL_TREE;
return rval;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
/* TYPE is a class type. Return the index of the fields within
the method vector with name NAME, or -1 is no such field exists. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
lookup_fnfields_1 (type, name)
tree type, name;
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
register tree method_vec
= CLASS_TYPE_P (type) ? CLASSTYPE_METHOD_VEC (type) : NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (method_vec != 0)
{
register tree *methods = &TREE_VEC_ELT (method_vec, 0);
register tree *end = TREE_VEC_END (method_vec);
#ifdef GATHER_STATISTICS
n_calls_lookup_fnfields_1++;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif /* GATHER_STATISTICS */
/* Constructors are first... */
if (*methods && name == ctor_identifier)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
return 0;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* and destructors are second. */
if (*++methods && name == dtor_identifier)
return 1;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
while (++methods != end && *methods)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
#ifdef GATHER_STATISTICS
n_outer_fields_searched++;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif /* GATHER_STATISTICS */
if (DECL_NAME (OVL_CURRENT (*methods)) == name)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
break;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* If we didn't find it, it might have been a template
conversion operator. (Note that we don't look for this case
above so that we will always find specializations first.) */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if ((methods == end || !*methods)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
&& IDENTIFIER_TYPENAME_P (name))
{
methods = &TREE_VEC_ELT (method_vec, 0) + 1;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
while (++methods != end && *methods)
{
tree method_name = DECL_NAME (OVL_CURRENT (*methods));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (!IDENTIFIER_TYPENAME_P (method_name))
{
/* Since all conversion operators come first, we know
there is no such operator. */
methods = end;
break;
}
else if (TREE_CODE (OVL_CURRENT (*methods)) == TEMPLATE_DECL)
break;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (methods != end && *methods)
return methods - &TREE_VEC_ELT (method_vec, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return -1;
}
/* Walk the class hierarchy dominated by TYPE. FN is called for each
type in the hierarchy, in a breadth-first preorder traversal. .
If it ever returns a non-NULL value, that value is immediately
returned and the walk is terminated. At each node FN, is passed a
BINFO indicating the path from the curently visited base-class to
TYPE. The TREE_CHAINs of the BINFOs may be used for scratch space;
they are otherwise unused. Before each base-class is walked QFN is
called. If the value returned is non-zero, the base-class is
walked; otherwise it is not. If QFN is NULL, it is treated as a
function which always returns 1. Both FN and QFN are passed the
DATA whenever they are called. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
bfs_walk (binfo, fn, qfn, data)
tree binfo;
tree (*fn) PROTO((tree, void *));
tree (*qfn) PROTO((tree, void *));
void *data;
{
size_t head;
size_t tail;
tree rval = NULL_TREE;
/* An array of the base classes of BINFO. These will be built up in
breadth-first order, except where QFN prunes the search. */
varray_type bfs_bases;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Start with enough room for ten base classes. That will be enough
for most hierarchies. */
VARRAY_TREE_INIT (bfs_bases, 10, "search_stack");
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Put the first type into the stack. */
VARRAY_TREE (bfs_bases, 0) = binfo;
tail = 1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
for (head = 0; head < tail; ++head)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int i;
int n_baselinks;
tree binfos;
/* Pull the next type out of the queue. */
binfo = VARRAY_TREE (bfs_bases, head);
/* If this is the one we're looking for, we're done. */
rval = (*fn) (binfo, data);
if (rval)
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Queue up the base types. */
binfos = BINFO_BASETYPES (binfo);
n_baselinks = binfos ? TREE_VEC_LENGTH (binfos): 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
for (i = 0; i < n_baselinks; i++)
{
tree base_binfo = TREE_VEC_ELT (binfos, i);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (qfn)
base_binfo = (*qfn) (base_binfo, data);
if (base_binfo)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (tail == VARRAY_SIZE (bfs_bases))
VARRAY_GROW (bfs_bases, 2 * VARRAY_SIZE (bfs_bases));
VARRAY_TREE (bfs_bases, tail) = base_binfo;
++tail;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Clean up. */
VARRAY_FREE (bfs_bases);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return rval;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Exactly like bfs_walk, except that a depth-first traversal is
performed, and PREFN is called in preorder, while POSTFN is called
in postorder. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_walk_real (binfo, prefn, postfn, qfn, data)
tree binfo;
tree (*prefn) PROTO((tree, void *));
tree (*postfn) PROTO((tree, void *));
tree (*qfn) PROTO((tree, void *));
void *data;
{
int i;
int n_baselinks;
tree binfos;
tree rval = NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Call the pre-order walking function. */
if (prefn)
{
rval = (*prefn) (binfo, data);
if (rval)
return rval;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Process the basetypes. */
binfos = BINFO_BASETYPES (binfo);
n_baselinks = binfos ? TREE_VEC_LENGTH (binfos): 0;
for (i = 0; i < n_baselinks; i++)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree base_binfo = TREE_VEC_ELT (binfos, i);
if (qfn)
base_binfo = (*qfn) (base_binfo, data);
if (base_binfo)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
rval = dfs_walk_real (base_binfo, prefn, postfn, qfn, data);
if (rval)
return rval;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Call the post-order walking function. */
if (postfn)
rval = (*postfn) (binfo, data);
return rval;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Exactly like bfs_walk, except that a depth-first post-order traversal is
performed. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
dfs_walk (binfo, fn, qfn, data)
tree binfo;
tree (*fn) PROTO((tree, void *));
tree (*qfn) PROTO((tree, void *));
void *data;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return dfs_walk_real (binfo, 0, fn, qfn, data);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct gvnt_info
{
/* The name of the function we are looking for. */
tree name;
/* The overloaded functions we have found. */
tree fields;
};
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Called from get_virtuals_named_this via bfs_walk. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
get_virtuals_named_this_r (binfo, data)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
void *data;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct gvnt_info *gvnti = (struct gvnt_info *) data;
tree type = BINFO_TYPE (binfo);
int idx;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
idx = lookup_fnfields_here (BINFO_TYPE (binfo), gvnti->name);
if (idx >= 0)
gvnti->fields
= scratch_tree_cons (binfo,
TREE_VEC_ELT (CLASSTYPE_METHOD_VEC (type),
idx),
gvnti->fields);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Return the virtual functions with the indicated NAME in the type
indicated by BINFO. The result is a TREE_LIST whose TREE_PURPOSE
indicates the base class from which the TREE_VALUE (an OVERLOAD or
just a FUNCTION_DECL) originated. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static tree
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
get_virtuals_named_this (binfo, name)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree name;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct gvnt_info gvnti;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree fields;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
gvnti.name = name;
gvnti.fields = NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
bfs_walk (binfo, get_virtuals_named_this_r, 0, &gvnti);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Get to the function decls, and return the first virtual function
with this name, if there is one. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
for (fields = gvnti.fields; fields; fields = next_baselink (fields))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
tree fndecl;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
for (fndecl = TREE_VALUE (fields); fndecl; fndecl = OVL_NEXT (fndecl))
if (DECL_VINDEX (OVL_CURRENT (fndecl)))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
return fields;
}
return NULL_TREE;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
static tree
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
get_virtual_destructor (binfo, data)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
void *data ATTRIBUTE_UNUSED;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
tree type = BINFO_TYPE (binfo);
if (TYPE_HAS_DESTRUCTOR (type)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
&& DECL_VINDEX (TREE_VEC_ELT (CLASSTYPE_METHOD_VEC (type), 1)))
return TREE_VEC_ELT (CLASSTYPE_METHOD_VEC (type), 1);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
return 0;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
tree_has_any_destructor_p (binfo, data)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
void *data ATTRIBUTE_UNUSED;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
tree type = BINFO_TYPE (binfo);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return TYPE_NEEDS_DESTRUCTOR (type) ? binfo : NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Returns > 0 if a function with type DRETTYPE overriding a function
with type BRETTYPE is covariant, as defined in [class.virtual].
Returns 1 if trivial covariance, 2 if non-trivial (requiring runtime
adjustment), or -1 if pedantically invalid covariance. */
static int
covariant_return_p (brettype, drettype)
tree brettype, drettype;
{
tree binfo;
if (TREE_CODE (brettype) == FUNCTION_DECL
|| TREE_CODE (brettype) == THUNK_DECL)
{
brettype = TREE_TYPE (TREE_TYPE (brettype));
drettype = TREE_TYPE (TREE_TYPE (drettype));
}
else if (TREE_CODE (brettype) == METHOD_TYPE)
{
brettype = TREE_TYPE (brettype);
drettype = TREE_TYPE (drettype);
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (same_type_p (brettype, drettype))
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
return 0;
if (! (TREE_CODE (brettype) == TREE_CODE (drettype)
&& (TREE_CODE (brettype) == POINTER_TYPE
|| TREE_CODE (brettype) == REFERENCE_TYPE)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
&& TYPE_QUALS (brettype) == TYPE_QUALS (drettype)))
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
return 0;
if (! can_convert (brettype, drettype))
return 0;
brettype = TREE_TYPE (brettype);
drettype = TREE_TYPE (drettype);
/* If not pedantic, allow any standard pointer conversion. */
if (! IS_AGGR_TYPE (drettype) || ! IS_AGGR_TYPE (brettype))
return -1;
binfo = get_binfo (brettype, drettype, 1);
/* If we get an error_mark_node from get_binfo, it already complained,
so let's just succeed. */
if (binfo == error_mark_node)
return 1;
if (! BINFO_OFFSET_ZEROP (binfo) || TREE_VIA_VIRTUAL (binfo))
return 2;
return 1;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Given a class type TYPE, and a function decl FNDECL, look for a
virtual function in TYPE's hierarchy which FNDECL could match as a
virtual function. It doesn't matter which one we find.
DTORP is nonzero if we are looking for a destructor. Destructors
need special treatment because they do not match by name. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree
get_matching_virtual (binfo, fndecl, dtorp)
tree binfo, fndecl;
int dtorp;
{
tree tmp = NULL_TREE;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
int i;
if (TREE_CODE (fndecl) == TEMPLATE_DECL)
/* In [temp.mem] we have:
A specialization of a member function template does not
override a virtual function from a base class. */
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Breadth first search routines start searching basetypes
of TYPE, so we must perform first ply of search here. */
if (dtorp)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return bfs_walk (binfo, get_virtual_destructor,
tree_has_any_destructor_p, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
{
tree drettype, dtypes, btypes, instptr_type;
tree basetype = DECL_CLASS_CONTEXT (fndecl);
tree baselink, best = NULL_TREE;
tree name = DECL_ASSEMBLER_NAME (fndecl);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree declarator = DECL_NAME (fndecl);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (IDENTIFIER_VIRTUAL_P (declarator) == 0)
return NULL_TREE;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
baselink = get_virtuals_named_this (binfo, declarator);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (baselink == NULL_TREE)
return NULL_TREE;
drettype = TREE_TYPE (TREE_TYPE (fndecl));
dtypes = TYPE_ARG_TYPES (TREE_TYPE (fndecl));
if (DECL_STATIC_FUNCTION_P (fndecl))
instptr_type = NULL_TREE;
else
instptr_type = TREE_TYPE (TREE_VALUE (dtypes));
for (; baselink; baselink = next_baselink (baselink))
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree tmps;
for (tmps = TREE_VALUE (baselink); tmps; tmps = OVL_NEXT (tmps))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tmp = OVL_CURRENT (tmps);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (! DECL_VINDEX (tmp))
continue;
btypes = TYPE_ARG_TYPES (TREE_TYPE (tmp));
if (instptr_type == NULL_TREE)
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (compparms (TREE_CHAIN (btypes), dtypes))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Caller knows to give error in this case. */
return tmp;
return NULL_TREE;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (/* The first parameter is the `this' parameter,
which has POINTER_TYPE, and we can therefore
safely use TYPE_QUALS, rather than
CP_TYPE_QUALS. */
(TYPE_QUALS (TREE_TYPE (TREE_VALUE (btypes)))
== TYPE_QUALS (instptr_type))
&& compparms (TREE_CHAIN (btypes), TREE_CHAIN (dtypes)))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
tree brettype = TREE_TYPE (TREE_TYPE (tmp));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (same_type_p (brettype, drettype))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* OK */;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
else if ((i = covariant_return_p (brettype, drettype)))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
if (i == 2)
sorry ("adjusting pointers for covariant returns");
if (pedantic && i == -1)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
cp_pedwarn_at ("invalid covariant return type for `%#D' (must be pointer or reference to class)", fndecl);
cp_pedwarn_at (" overriding `%#D'", tmp);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
else if (IS_AGGR_TYPE_2 (brettype, drettype)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
&& same_or_base_type_p (brettype, drettype))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
error ("invalid covariant return type (must use pointer or reference)");
cp_error_at (" overriding `%#D'", tmp);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
cp_error_at (" with `%#D'", fndecl);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
else if (IDENTIFIER_ERROR_LOCUS (name) == NULL_TREE)
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
cp_error_at ("conflicting return type specified for virtual function `%#D'", fndecl);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
cp_error_at (" overriding definition as `%#D'", tmp);
SET_IDENTIFIER_ERROR_LOCUS (name, basetype);
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* FNDECL overrides this function. We continue to
check all the other functions in order to catch
errors; it might be that in some other baseclass
a virtual function was declared with the same
parameter types, but a different return type. */
best = tmp;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
}
return best;
}
}
/* Return the list of virtual functions which are abstract in type
TYPE that come from non virtual base classes. See
expand_direct_vtbls_init for the style of search we do. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static tree
get_abstract_virtuals_1 (binfo, do_self, abstract_virtuals)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree binfo;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
int do_self;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree abstract_virtuals;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
tree binfos = BINFO_BASETYPES (binfo);
int i, n_baselinks = binfos ? TREE_VEC_LENGTH (binfos) : 0;
for (i = 0; i < n_baselinks; i++)
{
tree base_binfo = TREE_VEC_ELT (binfos, i);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
int is_not_base_vtable
= i != CLASSTYPE_VFIELD_PARENT (BINFO_TYPE (binfo));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (! TREE_VIA_VIRTUAL (base_binfo))
abstract_virtuals
= get_abstract_virtuals_1 (base_binfo, is_not_base_vtable,
abstract_virtuals);
}
/* Should we use something besides CLASSTYPE_VFIELDS? */
if (do_self && CLASSTYPE_VFIELDS (BINFO_TYPE (binfo)))
{
tree virtuals = BINFO_VIRTUALS (binfo);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
skip_rtti_stuff (&virtuals, BINFO_TYPE (binfo));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
while (virtuals)
{
tree base_pfn = FNADDR_FROM_VTABLE_ENTRY (TREE_VALUE (virtuals));
tree base_fndecl = TREE_OPERAND (base_pfn, 0);
if (DECL_ABSTRACT_VIRTUAL_P (base_fndecl))
abstract_virtuals = tree_cons (NULL_TREE, base_fndecl, abstract_virtuals);
virtuals = TREE_CHAIN (virtuals);
}
}
return abstract_virtuals;
}
/* Return the list of virtual functions which are abstract in type TYPE.
This information is cached, and so must be built on a
non-temporary obstack. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree
get_abstract_virtuals (type)
tree type;
{
tree vbases;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree abstract_virtuals = NULL;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* First get all from non-virtual bases. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
abstract_virtuals
= get_abstract_virtuals_1 (TYPE_BINFO (type), 1, abstract_virtuals);
for (vbases = CLASSTYPE_VBASECLASSES (type); vbases; vbases = TREE_CHAIN (vbases))
{
tree virtuals = BINFO_VIRTUALS (vbases);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
skip_rtti_stuff (&virtuals, type);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
while (virtuals)
{
tree base_pfn = FNADDR_FROM_VTABLE_ENTRY (TREE_VALUE (virtuals));
tree base_fndecl = TREE_OPERAND (base_pfn, 0);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (DECL_NEEDS_FINAL_OVERRIDER_P (base_fndecl))
cp_error ("`%#D' needs a final overrider", base_fndecl);
else if (DECL_ABSTRACT_VIRTUAL_P (base_fndecl))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
abstract_virtuals = tree_cons (NULL_TREE, base_fndecl, abstract_virtuals);
virtuals = TREE_CHAIN (virtuals);
}
}
return nreverse (abstract_virtuals);
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
next_baselink (baselink)
tree baselink;
{
tree tmp = TREE_TYPE (baselink);
baselink = TREE_CHAIN (baselink);
while (tmp)
{
/* @@ does not yet add previous base types. */
baselink = tree_cons (TREE_PURPOSE (tmp), TREE_VALUE (tmp),
baselink);
TREE_TYPE (baselink) = TREE_TYPE (tmp);
tmp = TREE_CHAIN (tmp);
}
return baselink;
}
/* DEPTH-FIRST SEARCH ROUTINES. */
/* This routine converts a pointer to be a pointer of an immediate
base class. The normal convert_pointer_to routine would diagnose
the conversion as ambiguous, under MI code that has the base class
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
as an ambiguous base class. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static tree
convert_pointer_to_single_level (to_type, expr)
tree to_type, expr;
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree derived;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo_of_derived;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
int i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
derived = TREE_TYPE (TREE_TYPE (expr));
binfo_of_derived = TYPE_BINFO (derived);
my_friendly_assert (BINFO_INHERITANCE_CHAIN (binfo_of_derived) == NULL_TREE,
980827);
for (i = CLASSTYPE_N_BASECLASSES (derived) - 1; i >= 0; --i)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree binfo = BINFO_BASETYPE (binfo_of_derived, i);
my_friendly_assert (BINFO_INHERITANCE_CHAIN (binfo) == binfo_of_derived,
980827);
if (same_type_p (BINFO_TYPE (binfo), to_type))
return build_vbase_path (PLUS_EXPR,
build_pointer_type (to_type),
expr, binfo, 1);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
my_friendly_abort (19990607);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* NOTREACHED */
return NULL_TREE;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree markedp (binfo, data)
tree binfo;
void *data ATTRIBUTE_UNUSED;
{
return BINFO_MARKED (binfo) ? binfo : NULL_TREE;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
unmarkedp (binfo, data)
tree binfo;
void *data ATTRIBUTE_UNUSED;
{
return !BINFO_MARKED (binfo) ? binfo : NULL_TREE;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
marked_vtable_pathp (binfo, data)
tree binfo;
void *data ATTRIBUTE_UNUSED;
{
return BINFO_VTABLE_PATH_MARKED (binfo) ? binfo : NULL_TREE;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
unmarked_vtable_pathp (binfo, data)
tree binfo;
void *data ATTRIBUTE_UNUSED;
{
return !BINFO_VTABLE_PATH_MARKED (binfo) ? binfo : NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
marked_new_vtablep (binfo, data)
tree binfo;
void *data ATTRIBUTE_UNUSED;
{
return BINFO_NEW_VTABLE_MARKED (binfo) ? binfo : NULL_TREE;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
unmarked_new_vtablep (binfo, data)
tree binfo;
void *data ATTRIBUTE_UNUSED;
{
return !BINFO_NEW_VTABLE_MARKED (binfo) ? binfo : NULL_TREE;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
marked_pushdecls_p (binfo, data)
tree binfo;
void *data ATTRIBUTE_UNUSED;
{
return (CLASS_TYPE_P (BINFO_TYPE (binfo))
&& BINFO_PUSHDECLS_MARKED (binfo)) ? binfo : NULL_TREE;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
unmarked_pushdecls_p (binfo, data)
tree binfo;
void *data ATTRIBUTE_UNUSED;
{
return (CLASS_TYPE_P (BINFO_TYPE (binfo))
&& !BINFO_PUSHDECLS_MARKED (binfo)) ? binfo : NULL_TREE;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#if 0
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static int dfs_search_slot_nonempty_p (binfo) tree binfo;
{ return CLASSTYPE_SEARCH_SLOT (BINFO_TYPE (binfo)) != 0; }
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_debug_unmarkedp (binfo, data)
tree binfo;
void *data ATTRIBUTE_UNUSED;
{
return (!CLASSTYPE_DEBUG_REQUESTED (BINFO_TYPE (binfo))
? binfo : NULL_TREE);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* The worker functions for `dfs_walk'. These do not need to
test anything (vis a vis marking) if they are paired with
a predicate function (above). */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#if 0
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static void
dfs_mark (binfo) tree binfo;
{ SET_BINFO_MARKED (binfo); }
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree
dfs_unmark (binfo, data)
tree binfo;
void *data ATTRIBUTE_UNUSED;
{
CLEAR_BINFO_MARKED (binfo);
return NULL_TREE;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#if 0
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static void
dfs_mark_vtable_path (binfo) tree binfo;
{ SET_BINFO_VTABLE_PATH_MARKED (binfo); }
static void
dfs_unmark_vtable_path (binfo) tree binfo;
{ CLEAR_BINFO_VTABLE_PATH_MARKED (binfo); }
static void
dfs_mark_new_vtable (binfo) tree binfo;
{ SET_BINFO_NEW_VTABLE_MARKED (binfo); }
static void
dfs_unmark_new_vtable (binfo) tree binfo;
{ CLEAR_BINFO_NEW_VTABLE_MARKED (binfo); }
static void
dfs_clear_search_slot (binfo) tree binfo;
{ CLASSTYPE_SEARCH_SLOT (BINFO_TYPE (binfo)) = 0; }
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_debug_mark (binfo, data)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
void *data ATTRIBUTE_UNUSED;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
tree t = BINFO_TYPE (binfo);
/* Use heuristic that if there are virtual functions,
ignore until we see a non-inline virtual function. */
tree methods = CLASSTYPE_METHOD_VEC (t);
CLASSTYPE_DEBUG_REQUESTED (t) = 1;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
if (methods == 0)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* If interface info is known, either we've already emitted the debug
info or we don't need to. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (CLASSTYPE_INTERFACE_KNOWN (t))
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* If debug info is requested from this context for this type, supply it.
If debug info is requested from another context for this type,
see if some third context can supply it. */
if (current_function_decl == NULL_TREE
|| DECL_CLASS_CONTEXT (current_function_decl) != t)
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
if (TREE_VEC_ELT (methods, 1))
methods = TREE_VEC_ELT (methods, 1);
else if (TREE_VEC_ELT (methods, 0))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
methods = TREE_VEC_ELT (methods, 0);
else
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
methods = TREE_VEC_ELT (methods, 2);
methods = OVL_CURRENT (methods);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
while (methods)
{
if (DECL_VINDEX (methods)
&& DECL_THIS_INLINE (methods) == 0
&& DECL_ABSTRACT_VIRTUAL_P (methods) == 0)
{
/* Somebody, somewhere is going to have to define this
virtual function. When they do, they will provide
the debugging info. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
methods = TREE_CHAIN (methods);
}
}
/* We cannot rely on some alien method to solve our problems,
so we must write out the debug info ourselves. */
TYPE_DECL_SUPPRESS_DEBUG (TYPE_NAME (t)) = 0;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
rest_of_type_compilation (t, toplevel_bindings_p ());
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct vbase_info
{
tree decl_ptr;
tree inits;
tree vbase_types;
};
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Attach to the type of the virtual base class, the pointer to the
virtual base class. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_find_vbases (binfo, data)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
void *data;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct vbase_info *vi = (struct vbase_info *) data;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfos = BINFO_BASETYPES (binfo);
int i, n_baselinks = binfos ? TREE_VEC_LENGTH (binfos) : 0;
for (i = n_baselinks-1; i >= 0; i--)
{
tree base_binfo = TREE_VEC_ELT (binfos, i);
if (TREE_VIA_VIRTUAL (base_binfo)
&& CLASSTYPE_SEARCH_SLOT (BINFO_TYPE (base_binfo)) == 0)
{
tree vbase = BINFO_TYPE (base_binfo);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree binfo = binfo_member (vbase, vi->vbase_types);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
CLASSTYPE_SEARCH_SLOT (vbase)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
= build (PLUS_EXPR, build_pointer_type (vbase),
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
vi->decl_ptr, BINFO_OFFSET (binfo));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
SET_BINFO_VTABLE_PATH_MARKED (binfo);
SET_BINFO_NEW_VTABLE_MARKED (binfo);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_init_vbase_pointers (binfo, data)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
void *data;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct vbase_info *vi = (struct vbase_info *) data;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree type = BINFO_TYPE (binfo);
tree fields = TYPE_FIELDS (type);
tree this_vbase_ptr;
CLEAR_BINFO_VTABLE_PATH_MARKED (binfo);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#if 0
/* See finish_struct_1 for when we can enable this. */
/* If we have a vtable pointer first, skip it. */
if (VFIELD_NAME_P (DECL_NAME (fields)))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
fields = TREE_CHAIN (fields);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (BINFO_INHERITANCE_CHAIN (binfo))
{
this_vbase_ptr = TREE_CHAIN (BINFO_INHERITANCE_CHAIN (binfo));
if (TREE_VIA_VIRTUAL (binfo))
this_vbase_ptr = CLASSTYPE_SEARCH_SLOT (type);
else
this_vbase_ptr = convert_pointer_to_single_level (type,
this_vbase_ptr);
TREE_CHAIN (binfo) = this_vbase_ptr;
}
else
this_vbase_ptr = TREE_CHAIN (binfo);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (fields == NULL_TREE
|| DECL_NAME (fields) == NULL_TREE
|| ! VBASE_NAME_P (DECL_NAME (fields)))
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (build_pointer_type (type)
!= TYPE_MAIN_VARIANT (TREE_TYPE (this_vbase_ptr)))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
my_friendly_abort (125);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
while (fields && DECL_NAME (fields) && VBASE_NAME_P (DECL_NAME (fields)))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
tree ref = build (COMPONENT_REF, TREE_TYPE (fields),
build_indirect_ref (this_vbase_ptr, NULL_PTR), fields);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree init = CLASSTYPE_SEARCH_SLOT (TREE_TYPE (TREE_TYPE (fields)));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
vi->inits = tree_cons (binfo_member (TREE_TYPE (TREE_TYPE (fields)),
vi->vbase_types),
build_modify_expr (ref, NOP_EXPR, init),
vi->inits);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
fields = TREE_CHAIN (fields);
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
/* Sometimes this needs to clear both VTABLE_PATH and NEW_VTABLE. Other
times, just NEW_VTABLE, but optimizer should make both with equal
efficiency (though it does not currently). */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_clear_vbase_slots (binfo, data)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
void *data ATTRIBUTE_UNUSED;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
tree type = BINFO_TYPE (binfo);
CLASSTYPE_SEARCH_SLOT (type) = 0;
CLEAR_BINFO_VTABLE_PATH_MARKED (binfo);
CLEAR_BINFO_NEW_VTABLE_MARKED (binfo);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
tree
init_vbase_pointers (type, decl_ptr)
tree type;
tree decl_ptr;
{
if (TYPE_USES_VIRTUAL_BASECLASSES (type))
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct vbase_info vi;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
int old_flag = flag_this_is_variable;
tree binfo = TYPE_BINFO (type);
flag_this_is_variable = -2;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Find all the virtual base classes, marking them for later
initialization. */
vi.decl_ptr = decl_ptr;
vi.vbase_types = CLASSTYPE_VBASECLASSES (type);
vi.inits = NULL_TREE;
dfs_walk (binfo, dfs_find_vbases, unmarked_vtable_pathp, &vi);
/* Build up a list of the initializers. */
TREE_CHAIN (binfo) = decl_ptr;
dfs_walk_real (binfo,
dfs_init_vbase_pointers, 0,
marked_vtable_pathp,
&vi);
dfs_walk (binfo, dfs_clear_vbase_slots, marked_new_vtablep, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
flag_this_is_variable = old_flag;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return vi.inits;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
return 0;
}
/* get the virtual context (the vbase that directly contains the
DECL_CLASS_CONTEXT of the FNDECL) that the given FNDECL is declared in,
or NULL_TREE if there is none.
FNDECL must come from a virtual table from a virtual base to ensure that
there is only one possible DECL_CLASS_CONTEXT.
We know that if there is more than one place (binfo) the fndecl that the
declared, they all refer to the same binfo. See get_class_offset_1 for
the check that ensures this. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static tree
virtual_context (fndecl, t, vbase)
tree fndecl, t, vbase;
{
tree path;
if (get_base_distance (DECL_CLASS_CONTEXT (fndecl), t, 0, &path) < 0)
{
/* DECL_CLASS_CONTEXT can be ambiguous in t. */
if (get_base_distance (DECL_CLASS_CONTEXT (fndecl), vbase, 0, &path) >= 0)
{
while (path)
{
/* Not sure if checking path == vbase is necessary here, but just in
case it is. */
if (TREE_VIA_VIRTUAL (path) || path == vbase)
return binfo_member (BINFO_TYPE (path), CLASSTYPE_VBASECLASSES (t));
path = BINFO_INHERITANCE_CHAIN (path);
}
}
/* This shouldn't happen, I don't want errors! */
warning ("recoverable compiler error, fixups for virtual function");
return vbase;
}
while (path)
{
if (TREE_VIA_VIRTUAL (path))
return binfo_member (BINFO_TYPE (path), CLASSTYPE_VBASECLASSES (t));
path = BINFO_INHERITANCE_CHAIN (path);
}
return 0;
}
/* Fixups upcast offsets for one vtable.
Entries may stay within the VBASE given, or
they may upcast into a direct base, or
they may upcast into a different vbase.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
We only need to do fixups in case 2 and 3. In case 2, we add in
the virtual base offset to effect an upcast, in case 3, we add in
the virtual base offset to effect an upcast, then subtract out the
offset for the other virtual base, to effect a downcast into it.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
This routine mirrors fixup_vtable_deltas in functionality, though
this one is runtime based, and the other is compile time based.
Conceivably that routine could be removed entirely, and all fixups
done at runtime.
VBASE_OFFSETS is an association list of virtual bases that contains
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
offset information for the virtual bases, so the offsets are only
calculated once. The offsets are computed by where we think the
vbase should be (as noted by the CLASSTYPE_SEARCH_SLOT) minus where
the vbase really is. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static void
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
expand_upcast_fixups (binfo, addr, orig_addr, vbase, vbase_addr, t,
vbase_offsets)
tree binfo, addr, orig_addr, vbase, vbase_addr, t, *vbase_offsets;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
tree virtuals = BINFO_VIRTUALS (binfo);
tree vc;
tree delta;
unsigned HOST_WIDE_INT n;
delta = purpose_member (vbase, *vbase_offsets);
if (! delta)
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
delta = CLASSTYPE_SEARCH_SLOT (BINFO_TYPE (vbase));
delta = build (MINUS_EXPR, ptrdiff_type_node, delta, vbase_addr);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
delta = save_expr (delta);
delta = tree_cons (vbase, delta, *vbase_offsets);
*vbase_offsets = delta;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
n = skip_rtti_stuff (&virtuals, t);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
while (virtuals)
{
tree current_fndecl = TREE_VALUE (virtuals);
current_fndecl = FNADDR_FROM_VTABLE_ENTRY (current_fndecl);
current_fndecl = TREE_OPERAND (current_fndecl, 0);
if (current_fndecl
&& current_fndecl != abort_fndecl
&& (vc=virtual_context (current_fndecl, t, vbase)) != vbase)
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* This may in fact need a runtime fixup. */
tree idx = build_int_2 (n, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree vtbl = BINFO_VTABLE (binfo);
tree nvtbl = lookup_name (DECL_NAME (vtbl), 0);
tree aref, ref, naref;
tree old_delta, new_delta;
tree init;
if (nvtbl == NULL_TREE
|| nvtbl == IDENTIFIER_GLOBAL_VALUE (DECL_NAME (vtbl)))
{
/* Dup it if it isn't in local scope yet. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
nvtbl = build_decl
(VAR_DECL, DECL_NAME (vtbl),
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
TYPE_MAIN_VARIANT (TREE_TYPE (vtbl)));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
DECL_ALIGN (nvtbl) = MAX (TYPE_ALIGN (double_type_node),
DECL_ALIGN (nvtbl));
TREE_READONLY (nvtbl) = 0;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
DECL_ARTIFICIAL (nvtbl) = 1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
nvtbl = pushdecl (nvtbl);
init = NULL_TREE;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
cp_finish_decl (nvtbl, init, NULL_TREE, 0,
LOOKUP_ONLYCONVERTING);
/* We don't set DECL_VIRTUAL_P and DECL_CONTEXT on nvtbl
because they wouldn't be useful; everything that wants to
look at the vtable will look at the decl for the normal
vtable. Setting DECL_CONTEXT also screws up
decl_function_context. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
init = build (MODIFY_EXPR, TREE_TYPE (nvtbl),
nvtbl, vtbl);
TREE_SIDE_EFFECTS (init) = 1;
expand_expr_stmt (init);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Update the vtable pointers as necessary. */
ref = build_vfield_ref
(build_indirect_ref (addr, NULL_PTR),
DECL_CONTEXT (CLASSTYPE_VFIELD (BINFO_TYPE (binfo))));
expand_expr_stmt
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
(build_modify_expr (ref, NOP_EXPR, nvtbl));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
assemble_external (vtbl);
aref = build_array_ref (vtbl, idx);
naref = build_array_ref (nvtbl, idx);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
old_delta = build_component_ref (aref, delta_identifier,
NULL_TREE, 0);
new_delta = build_component_ref (naref, delta_identifier,
NULL_TREE, 0);
/* This is a upcast, so we have to add the offset for the
virtual base. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
old_delta = build_binary_op (PLUS_EXPR, old_delta,
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
TREE_VALUE (delta));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (vc)
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* If this is set, we need to subtract out the delta
adjustments for the other virtual base that we
downcast into. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree vc_delta = purpose_member (vc, *vbase_offsets);
if (! vc_delta)
{
tree vc_addr = convert_pointer_to_real (vc, orig_addr);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
vc_delta = CLASSTYPE_SEARCH_SLOT (BINFO_TYPE (vc));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
vc_delta = build (MINUS_EXPR, ptrdiff_type_node,
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
vc_delta, vc_addr);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
vc_delta = save_expr (vc_delta);
*vbase_offsets = tree_cons (vc, vc_delta, *vbase_offsets);
}
else
vc_delta = TREE_VALUE (vc_delta);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* This is a downcast, so we have to subtract the offset
for the virtual base. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
old_delta = build_binary_op (MINUS_EXPR, old_delta, vc_delta);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
TREE_READONLY (new_delta) = 0;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
TREE_TYPE (new_delta) =
cp_build_qualified_type (TREE_TYPE (new_delta),
CP_TYPE_QUALS (TREE_TYPE (new_delta))
& ~TYPE_QUAL_CONST);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
expand_expr_stmt (build_modify_expr (new_delta, NOP_EXPR,
old_delta));
}
++n;
virtuals = TREE_CHAIN (virtuals);
}
}
/* Fixup upcast offsets for all direct vtables. Patterned after
expand_direct_vtbls_init. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static void
fixup_virtual_upcast_offsets (real_binfo, binfo, init_self, can_elide, addr, orig_addr, type, vbase, vbase_offsets)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree real_binfo, binfo;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
int init_self, can_elide;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree addr, orig_addr, type, vbase, *vbase_offsets;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
tree real_binfos = BINFO_BASETYPES (real_binfo);
tree binfos = BINFO_BASETYPES (binfo);
int i, n_baselinks = real_binfos ? TREE_VEC_LENGTH (real_binfos) : 0;
for (i = 0; i < n_baselinks; i++)
{
tree real_base_binfo = TREE_VEC_ELT (real_binfos, i);
tree base_binfo = TREE_VEC_ELT (binfos, i);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
int is_not_base_vtable
= i != CLASSTYPE_VFIELD_PARENT (BINFO_TYPE (real_binfo));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (! TREE_VIA_VIRTUAL (real_base_binfo))
fixup_virtual_upcast_offsets (real_base_binfo, base_binfo,
is_not_base_vtable, can_elide, addr,
orig_addr, type, vbase, vbase_offsets);
}
#if 0
/* Before turning this on, make sure it is correct. */
if (can_elide && ! BINFO_MODIFIED (binfo))
return;
#endif
/* Should we use something besides CLASSTYPE_VFIELDS? */
if (init_self && CLASSTYPE_VFIELDS (BINFO_TYPE (real_binfo)))
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree new_addr = convert_pointer_to_real (binfo, addr);
expand_upcast_fixups (real_binfo, new_addr, orig_addr, vbase, addr,
type, vbase_offsets);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
/* Build a COMPOUND_EXPR which when expanded will generate the code
needed to initialize all the virtual function table slots of all
the virtual baseclasses. MAIN_BINFO is the binfo which determines
the virtual baseclasses to use; TYPE is the type of the object to
which the initialization applies. TRUE_EXP is the true object we
are initializing, and DECL_PTR is the pointer to the sub-object we
are initializing.
When USE_COMPUTED_OFFSETS is non-zero, we can assume that the
object was laid out by a top-level constructor and the computed
offsets are valid to store vtables. When zero, we must store new
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
vtables through virtual baseclass pointers. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
void
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
expand_indirect_vtbls_init (binfo, true_exp, decl_ptr)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
tree true_exp, decl_ptr;
{
tree type = BINFO_TYPE (binfo);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* This function executes during the finish_function() segment,
AFTER the auto variables and temporary stack space has been marked
unused...If space is needed for the virtual function tables,
some of them might fit within what the compiler now thinks
are available stack slots... These values are actually initialized at
the beginnning of the function, so when the automatics use their space,
they will overwrite the values that are placed here. Marking all
temporary space as unavailable prevents this from happening. */
mark_all_temps_used();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (TYPE_USES_VIRTUAL_BASECLASSES (type))
{
rtx fixup_insns = NULL_RTX;
tree vbases = CLASSTYPE_VBASECLASSES (type);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct vbase_info vi;
vi.decl_ptr = (true_exp ? build_unary_op (ADDR_EXPR, true_exp, 0)
: decl_ptr);
vi.vbase_types = vbases;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
dfs_walk (binfo, dfs_find_vbases, unmarked_new_vtablep, &vi);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Initialized with vtables of type TYPE. */
for (; vbases; vbases = TREE_CHAIN (vbases))
{
tree addr;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
addr = convert_pointer_to_vbase (TREE_TYPE (vbases), vi.decl_ptr);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Do all vtables from this virtual base. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* This assumes that virtual bases can never serve as parent
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
binfos. (in the CLASSTYPE_VFIELD_PARENT sense) */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
expand_direct_vtbls_init (vbases, TYPE_BINFO (BINFO_TYPE (vbases)),
1, 0, addr);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Now we adjust the offsets for virtual functions that
cross virtual boundaries on an implicit upcast on vf call
so that the layout of the most complete type is used,
instead of assuming the layout of the virtual bases from
our current type. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (flag_vtable_thunks)
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* We don't have dynamic thunks yet!
So for now, just fail silently. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
else
{
tree vbase_offsets = NULL_TREE;
push_to_sequence (fixup_insns);
fixup_virtual_upcast_offsets (vbases,
TYPE_BINFO (BINFO_TYPE (vbases)),
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
1, 0, addr, vi.decl_ptr,
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
type, vbases, &vbase_offsets);
fixup_insns = get_insns ();
end_sequence ();
}
}
if (fixup_insns)
{
extern tree in_charge_identifier;
tree in_charge_node = lookup_name (in_charge_identifier, 0);
if (! in_charge_node)
{
warning ("recoverable internal compiler error, nobody's in charge!");
in_charge_node = integer_zero_node;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
in_charge_node = build_binary_op (EQ_EXPR, in_charge_node, integer_zero_node);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
expand_start_cond (in_charge_node, 0);
emit_insns (fixup_insns);
expand_end_cond ();
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
dfs_walk (binfo, dfs_clear_vbase_slots, marked_new_vtablep, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
/* get virtual base class types.
This adds type to the vbase_types list in reverse dfs order.
Ordering is very important, so don't change it. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_get_vbase_types (binfo, data)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
void *data;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree *vbase_types = (tree *) data;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
if (TREE_VIA_VIRTUAL (binfo) && ! BINFO_VBASE_MARKED (binfo))
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree new_vbase = make_binfo (integer_zero_node, binfo,
BINFO_VTABLE (binfo),
BINFO_VIRTUALS (binfo));
TREE_CHAIN (new_vbase) = *vbase_types;
TREE_VIA_VIRTUAL (new_vbase) = 1;
*vbase_types = new_vbase;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
SET_BINFO_VBASE_MARKED (binfo);
}
SET_BINFO_MARKED (binfo);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Return a list of binfos for the virtual base classes for TYPE, in
depth-first search order. The list is freshly allocated, so
no modification is made to the current binfo hierarchy. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree
get_vbase_types (type)
tree type;
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree vbase_types;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree vbases;
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
binfo = TYPE_BINFO (type);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
vbase_types = NULL_TREE;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
dfs_walk (binfo, dfs_get_vbase_types, unmarkedp, &vbase_types);
dfs_walk (binfo, dfs_unmark, markedp, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Rely upon the reverse dfs ordering from dfs_get_vbase_types, and now
reverse it so that we get normal dfs ordering. */
vbase_types = nreverse (vbase_types);
/* unmark marked vbases */
for (vbases = vbase_types; vbases; vbases = TREE_CHAIN (vbases))
CLEAR_BINFO_VBASE_MARKED (vbases);
return vbase_types;
}
/* If we want debug info for a type TYPE, make sure all its base types
are also marked as being potentially interesting. This avoids
the problem of not writing any debug info for intermediate basetypes
that have abstract virtual functions. Also mark member types. */
void
note_debug_info_needed (type)
tree type;
{
tree field;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
if (current_template_parms)
return;
if (TYPE_BEING_DEFINED (type))
/* We can't go looking for the base types and fields just yet. */
return;
/* We can't do the TYPE_DECL_SUPPRESS_DEBUG thing with DWARF, which
does not support name references between translation units. Well, we
could, but that would mean putting global labels in the debug output
before each exported type and each of its functions and static data
members. */
if (write_symbols == DWARF_DEBUG || write_symbols == DWARF2_DEBUG)
return;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
dfs_walk (TYPE_BINFO (type), dfs_debug_mark, dfs_debug_unmarkedp, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
for (field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field))
{
tree ttype;
if (TREE_CODE (field) == FIELD_DECL
&& IS_AGGR_TYPE (ttype = target_type (TREE_TYPE (field)))
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
&& dfs_debug_unmarkedp (TYPE_BINFO (ttype), 0))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
note_debug_info_needed (ttype);
}
}
/* Subroutines of push_class_decls (). */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Returns 1 iff BINFO is a base we shouldn't really be able to see into,
because it (or one of the intermediate bases) depends on template parms. */
static int
dependent_base_p (binfo)
tree binfo;
{
for (; binfo; binfo = BINFO_INHERITANCE_CHAIN (binfo))
{
if (currently_open_class (TREE_TYPE (binfo)))
break;
if (uses_template_parms (TREE_TYPE (binfo)))
return 1;
}
return 0;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static void
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
setup_class_bindings (name, type_binding_p)
tree name;
int type_binding_p;
{
tree type_binding = NULL_TREE;
tree value_binding;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* If we've already done the lookup for this declaration, we're
done. */
if (IDENTIFIER_CLASS_VALUE (name))
return;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* First, deal with the type binding. */
if (type_binding_p)
{
type_binding = lookup_member (current_class_type, name,
/*protect=*/2,
/*want_type=*/1);
if (TREE_CODE (type_binding) == TREE_LIST
&& TREE_TYPE (type_binding) == error_mark_node)
/* NAME is ambiguous. */
push_class_level_binding (name, type_binding);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
pushdecl_class_level (type_binding);
}
/* Now, do the value binding. */
value_binding = lookup_member (current_class_type, name,
/*protect=*/2,
/*want_type=*/0);
if (type_binding_p
&& (TREE_CODE (value_binding) == TYPE_DECL
|| (TREE_CODE (value_binding) == TREE_LIST
&& TREE_TYPE (value_binding) == error_mark_node
&& (TREE_CODE (TREE_VALUE (value_binding))
== TYPE_DECL))))
/* We found a type-binding, even when looking for a non-type
binding. This means that we already processed this binding
above. */
my_friendly_assert (type_binding_p, 19990401);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
if (TREE_CODE (value_binding) == TREE_LIST
&& TREE_TYPE (value_binding) == error_mark_node)
/* NAME is ambiguous. */
push_class_level_binding (name, value_binding);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (BASELINK_P (value_binding))
/* NAME is some overloaded functions. */
value_binding = TREE_VALUE (value_binding);
pushdecl_class_level (value_binding);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Push class-level declarations for any names appearing in BINFO that
are TYPE_DECLS. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_push_type_decls (binfo, data)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
void *data ATTRIBUTE_UNUSED;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree type;
tree fields;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
type = BINFO_TYPE (binfo);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
for (fields = TYPE_FIELDS (type); fields; fields = TREE_CHAIN (fields))
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (DECL_NAME (fields) && TREE_CODE (fields) == TYPE_DECL
&& !(!same_type_p (type, current_class_type)
&& template_self_reference_p (type, fields)))
setup_class_bindings (DECL_NAME (fields), /*type_binding_p=*/1);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* We can't just use BINFO_MARKED because envelope_add_decl uses
DERIVED_FROM_P, which calls get_base_distance. */
SET_BINFO_PUSHDECLS_MARKED (binfo);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Push class-level declarations for any names appearing in BINFO that
are not TYPE_DECLS. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_push_decls (binfo, data)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
void *data;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree type;
tree method_vec;
int dep_base_p;
type = BINFO_TYPE (binfo);
dep_base_p = (processing_template_decl && type != current_class_type
&& dependent_base_p (binfo));
if (!dep_base_p)
{
tree fields;
for (fields = TYPE_FIELDS (type); fields; fields = TREE_CHAIN (fields))
if (DECL_NAME (fields)
&& TREE_CODE (fields) != TYPE_DECL
&& TREE_CODE (fields) != USING_DECL)
setup_class_bindings (DECL_NAME (fields), /*type_binding_p=*/0);
else if (TREE_CODE (fields) == FIELD_DECL
&& ANON_UNION_TYPE_P (TREE_TYPE (fields)))
dfs_push_decls (TYPE_BINFO (TREE_TYPE (fields)), data);
method_vec = (CLASS_TYPE_P (type)
? CLASSTYPE_METHOD_VEC (type) : NULL_TREE);
if (method_vec)
{
tree *methods;
tree *end;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Farm out constructors and destructors. */
end = TREE_VEC_END (method_vec);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
for (methods = &TREE_VEC_ELT (method_vec, 2);
*methods && methods != end;
methods++)
setup_class_bindings (DECL_NAME (OVL_CURRENT (*methods)),
/*type_binding_p=*/0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
CLEAR_BINFO_PUSHDECLS_MARKED (binfo);
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
/* When entering the scope of a class, we cache all of the
fields that that class provides within its inheritance
lattice. Where ambiguities result, we mark them
with `error_mark_node' so that if they are encountered
without explicit qualification, we can emit an error
message. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
void
push_class_decls (type)
tree type;
{
struct obstack *ambient_obstack = current_obstack;
search_stack = push_search_level (search_stack, &search_obstack);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Build up all the relevant bindings and such on the cache
obstack. That way no memory is wasted when we throw away the
cache later. */
push_cache_obstack ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Enter type declarations and mark. */
dfs_walk (TYPE_BINFO (type), dfs_push_type_decls, unmarked_pushdecls_p, 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Enter non-type declarations and unmark. */
dfs_walk (TYPE_BINFO (type), dfs_push_decls, marked_pushdecls_p, 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Undo the call to push_cache_obstack above. */
pop_obstacks ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
current_obstack = ambient_obstack;
}
/* Here's a subroutine we need because C lacks lambdas. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_unuse_fields (binfo, data)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
void *data ATTRIBUTE_UNUSED;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
tree type = TREE_TYPE (binfo);
tree fields;
for (fields = TYPE_FIELDS (type); fields; fields = TREE_CHAIN (fields))
{
if (TREE_CODE (fields) != FIELD_DECL)
continue;
TREE_USED (fields) = 0;
if (DECL_NAME (fields) == NULL_TREE
&& TREE_CODE (TREE_TYPE (fields)) == UNION_TYPE)
unuse_fields (TREE_TYPE (fields));
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
void
unuse_fields (type)
tree type;
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
dfs_walk (TYPE_BINFO (type), dfs_unuse_fields, unmarkedp, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
void
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
pop_class_decls ()
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
/* We haven't pushed a search level when dealing with cached classes,
so we'd better not try to pop it. */
if (search_stack)
search_stack = pop_search_level (search_stack);
}
void
print_search_statistics ()
{
#ifdef GATHER_STATISTICS
fprintf (stderr, "%d fields searched in %d[%d] calls to lookup_field[_1]\n",
n_fields_searched, n_calls_lookup_field, n_calls_lookup_field_1);
fprintf (stderr, "%d fnfields searched in %d calls to lookup_fnfields\n",
n_outer_fields_searched, n_calls_lookup_fnfields);
fprintf (stderr, "%d calls to get_base_type\n", n_calls_get_base_type);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#else /* GATHER_STATISTICS */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
fprintf (stderr, "no search statistics\n");
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif /* GATHER_STATISTICS */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
void
init_search_processing ()
{
gcc_obstack_init (&search_obstack);
_vptr_name = get_identifier ("_vptr");
}
void
reinit_search_statistics ()
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#ifdef GATHER_STATISTICS
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
n_fields_searched = 0;
n_calls_lookup_field = 0, n_calls_lookup_field_1 = 0;
n_calls_lookup_fnfields = 0, n_calls_lookup_fnfields_1 = 0;
n_calls_get_base_type = 0;
n_outer_fields_searched = 0;
n_contexts_saved = 0;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#endif /* GATHER_STATISTICS */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#define scratch_tree_cons expr_tree_cons
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
add_conversions (binfo, data)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
void *data;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
int i;
tree method_vec = CLASSTYPE_METHOD_VEC (BINFO_TYPE (binfo));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree *conversions = (tree *) data;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
for (i = 2; i < TREE_VEC_LENGTH (method_vec); ++i)
{
tree tmp = TREE_VEC_ELT (method_vec, i);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree name;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (!tmp || ! DECL_CONV_FN_P (OVL_CURRENT (tmp)))
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
name = DECL_NAME (OVL_CURRENT (tmp));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Make sure we don't already have this conversion. */
if (! IDENTIFIER_MARKED (name))
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
*conversions = scratch_tree_cons (binfo, tmp, *conversions);
IDENTIFIER_MARKED (name) = 1;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
tree
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
lookup_conversions (type)
tree type;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
tree t;
tree conversions = NULL_TREE;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
if (TYPE_SIZE (type))
bfs_walk (TYPE_BINFO (type), add_conversions, 0, &conversions);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
for (t = conversions; t; t = TREE_CHAIN (t))
IDENTIFIER_MARKED (DECL_NAME (OVL_CURRENT (TREE_VALUE (t)))) = 0;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return conversions;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct overlap_info
{
tree compare_type;
int found_overlap;
};
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Check whether the empty class indicated by EMPTY_BINFO is also present
at offset 0 in COMPARE_TYPE, and set found_overlap if so. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_check_overlap (empty_binfo, data)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree empty_binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
void *data;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct overlap_info *oi = (struct overlap_info *) data;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
tree binfo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
for (binfo = TYPE_BINFO (oi->compare_type);
;
binfo = BINFO_BASETYPE (binfo, 0))
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
if (BINFO_TYPE (binfo) == BINFO_TYPE (empty_binfo))
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
oi->found_overlap = 1;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
break;
}
else if (BINFO_BASETYPES (binfo) == NULL_TREE)
break;
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
return NULL_TREE;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
/* Trivial function to stop base traversal when we find something. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static tree
dfs_no_overlap_yet (binfo, data)
tree binfo;
void *data;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct overlap_info *oi = (struct overlap_info *) data;
return !oi->found_overlap ? binfo : NULL_TREE;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
/* Returns nonzero if EMPTY_TYPE or any of its bases can also be found at
offset 0 in NEXT_TYPE. Used in laying out empty base class subobjects. */
int
types_overlap_p (empty_type, next_type)
tree empty_type, next_type;
{
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
struct overlap_info oi;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
if (! IS_AGGR_TYPE (next_type))
return 0;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
oi.compare_type = next_type;
oi.found_overlap = 0;
dfs_walk (TYPE_BINFO (empty_type), dfs_check_overlap,
dfs_no_overlap_yet, &oi);
return oi.found_overlap;
}
struct bfv_info {
tree vbases;
tree var;
};
static tree
dfs_bfv_queue_p (binfo, data)
tree binfo;
void *data;
{
struct bfv_info *bfvi = (struct bfv_info *) data;
/* Use the real virtual base class objects, not the placeholders in
the usual hierarchy. */
if (TREE_VIA_VIRTUAL (binfo))
return binfo_member (BINFO_TYPE (binfo), bfvi->vbases);
return binfo;
}
/* Passed to dfs_walk_real by binfo_for_vtable; determine if bvtable
comes from BINFO. */
static tree
dfs_bfv_helper (binfo, data)
tree binfo;
void *data;
{
struct bfv_info *bfvi = (struct bfv_info *) data;
if (BINFO_VTABLE (binfo) == bfvi->var)
return binfo;
return NULL_TREE;
}
/* Given a vtable VAR, determine which binfo it comes from. */
tree
binfo_for_vtable (var)
tree var;
{
tree type;
struct bfv_info bfvi;
type = DECL_CONTEXT (var);
bfvi.vbases = CLASSTYPE_VBASECLASSES (type);
bfvi.var = var;
return dfs_walk_real (TYPE_BINFO (type),
0, dfs_bfv_helper, dfs_bfv_queue_p, &bfvi);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Reference in New Issue Copy Permalink