693 lines
19 KiB
C++
693 lines
19 KiB
C++
// Debugging mode support code -*- C++ -*-
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// Copyright (C) 2003, 2004, 2005, 2006
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// Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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#include <debug/debug.h>
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#include <debug/safe_sequence.h>
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#include <debug/safe_iterator.h>
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#include <algorithm>
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#include <cassert>
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#include <cstring>
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#include <cctype>
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using namespace std;
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namespace
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{
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__gnu_cxx::__mutex safe_base_mutex;
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} // anonymous namespace
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namespace __gnu_debug
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{
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const char* _S_debug_messages[] =
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{
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"function requires a valid iterator range [%1.name;, %2.name;)",
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"attempt to insert into container with a singular iterator",
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"attempt to insert into container with an iterator"
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" from a different container",
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"attempt to erase from container with a %2.state; iterator",
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"attempt to erase from container with an iterator"
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" from a different container",
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"attempt to subscript container with out-of-bounds index %2;,"
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" but container only holds %3; elements",
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"attempt to access an element in an empty container",
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"elements in iterator range [%1.name;, %2.name;)"
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" are not partitioned by the value %3;",
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"elements in iterator range [%1.name;, %2.name;)"
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" are not partitioned by the predicate %3; and value %4;",
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"elements in iterator range [%1.name;, %2.name;) are not sorted",
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"elements in iterator range [%1.name;, %2.name;)"
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" are not sorted according to the predicate %3;",
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"elements in iterator range [%1.name;, %2.name;) do not form a heap",
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"elements in iterator range [%1.name;, %2.name;)"
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" do not form a heap with respect to the predicate %3;",
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"attempt to write through a singular bitset reference",
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"attempt to read from a singular bitset reference",
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"attempt to flip a singular bitset reference",
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"attempt to splice a list into itself",
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"attempt to splice lists with inequal allocators",
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"attempt to splice elements referenced by a %1.state; iterator",
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"attempt to splice an iterator from a different container",
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"splice destination %1.name;"
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" occurs within source range [%2.name;, %3.name;)",
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"attempt to initialize an iterator that will immediately become singular",
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"attempt to copy-construct an iterator from a singular iterator",
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"attempt to construct a constant iterator"
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" from a singular mutable iterator",
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"attempt to copy from a singular iterator",
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"attempt to dereference a %1.state; iterator",
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"attempt to increment a %1.state; iterator",
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"attempt to decrement a %1.state; iterator",
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"attempt to subscript a %1.state; iterator %2; step from"
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" its current position, which falls outside its dereferenceable range",
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"attempt to advance a %1.state; iterator %2; steps,"
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" which falls outside its valid range",
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"attempt to retreat a %1.state; iterator %2; steps,"
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" which falls outside its valid range",
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"attempt to compare a %1.state; iterator to a %2.state; iterator",
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"attempt to compare iterators from different sequences",
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"attempt to order a %1.state; iterator to a %2.state; iterator",
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"attempt to order iterators from different sequences",
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"attempt to compute the difference between a %1.state;"
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" iterator to a %2.state; iterator",
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"attempt to compute the different between two iterators"
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" from different sequences",
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"attempt to dereference an end-of-stream istream_iterator",
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"attempt to increment an end-of-stream istream_iterator",
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"attempt to output via an ostream_iterator with no associated stream",
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"attempt to dereference an end-of-stream istreambuf_iterator"
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" (this is a GNU extension)",
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"attempt to increment an end-of-stream istreambuf_iterator"
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};
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void
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_Safe_sequence_base::
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_M_detach_all()
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{
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__gnu_cxx::__scoped_lock sentry(safe_base_mutex);
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for (_Safe_iterator_base* __iter = _M_iterators; __iter;)
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{
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_Safe_iterator_base* __old = __iter;
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__iter = __iter->_M_next;
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__old->_M_detach_single();
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}
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for (_Safe_iterator_base* __iter2 = _M_const_iterators; __iter2;)
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{
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_Safe_iterator_base* __old = __iter2;
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__iter2 = __iter2->_M_next;
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__old->_M_detach_single();
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}
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}
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void
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_Safe_sequence_base::
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_M_detach_singular()
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{
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__gnu_cxx::__scoped_lock sentry(safe_base_mutex);
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for (_Safe_iterator_base* __iter = _M_iterators; __iter;)
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{
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_Safe_iterator_base* __old = __iter;
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__iter = __iter->_M_next;
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if (__old->_M_singular())
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__old->_M_detach_single();
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}
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for (_Safe_iterator_base* __iter2 = _M_const_iterators; __iter2;)
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{
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_Safe_iterator_base* __old = __iter2;
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__iter2 = __iter2->_M_next;
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if (__old->_M_singular())
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__old->_M_detach_single();
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}
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}
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void
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_Safe_sequence_base::
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_M_revalidate_singular()
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{
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__gnu_cxx::__scoped_lock sentry(safe_base_mutex);
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for (_Safe_iterator_base* __iter = _M_iterators; __iter;
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__iter = __iter->_M_next)
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__iter->_M_version = _M_version;
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for (_Safe_iterator_base* __iter2 = _M_const_iterators; __iter2;
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__iter2 = __iter2->_M_next)
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__iter2->_M_version = _M_version;
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}
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void
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_Safe_sequence_base::
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_M_swap(_Safe_sequence_base& __x)
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{
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__gnu_cxx::__scoped_lock sentry(safe_base_mutex);
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swap(_M_iterators, __x._M_iterators);
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swap(_M_const_iterators, __x._M_const_iterators);
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swap(_M_version, __x._M_version);
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_Safe_iterator_base* __iter;
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for (__iter = _M_iterators; __iter; __iter = __iter->_M_next)
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__iter->_M_sequence = this;
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for (__iter = __x._M_iterators; __iter; __iter = __iter->_M_next)
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__iter->_M_sequence = &__x;
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for (__iter = _M_const_iterators; __iter; __iter = __iter->_M_next)
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__iter->_M_sequence = this;
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for (__iter = __x._M_const_iterators; __iter; __iter = __iter->_M_next)
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__iter->_M_sequence = &__x;
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}
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__gnu_cxx::__mutex&
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_Safe_sequence_base::
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_M_get_mutex()
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{ return safe_base_mutex; }
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void
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_Safe_iterator_base::
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_M_attach(_Safe_sequence_base* __seq, bool __constant)
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{
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__gnu_cxx::__scoped_lock sentry(safe_base_mutex);
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_M_attach_single(__seq, __constant);
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}
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void
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_Safe_iterator_base::
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_M_attach_single(_Safe_sequence_base* __seq, bool __constant)
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{
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_M_detach_single();
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// Attach to the new sequence (if there is one)
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if (__seq)
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{
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_M_sequence = __seq;
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_M_version = _M_sequence->_M_version;
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_M_prior = 0;
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if (__constant)
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{
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_M_next = _M_sequence->_M_const_iterators;
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if (_M_next)
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_M_next->_M_prior = this;
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_M_sequence->_M_const_iterators = this;
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}
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else
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{
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_M_next = _M_sequence->_M_iterators;
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if (_M_next)
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_M_next->_M_prior = this;
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_M_sequence->_M_iterators = this;
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}
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}
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}
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void
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_Safe_iterator_base::
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_M_detach()
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{
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__gnu_cxx::__scoped_lock sentry(safe_base_mutex);
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_M_detach_single();
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}
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void
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_Safe_iterator_base::
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_M_detach_single()
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{
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if (_M_sequence)
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{
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// Remove us from this sequence's list
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if (_M_prior)
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_M_prior->_M_next = _M_next;
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if (_M_next)
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_M_next->_M_prior = _M_prior;
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if (_M_sequence->_M_const_iterators == this)
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_M_sequence->_M_const_iterators = _M_next;
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if (_M_sequence->_M_iterators == this)
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_M_sequence->_M_iterators = _M_next;
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}
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_M_sequence = 0;
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_M_version = 0;
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_M_prior = 0;
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_M_next = 0;
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}
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bool
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_Safe_iterator_base::
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_M_singular() const
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{ return !_M_sequence || _M_version != _M_sequence->_M_version; }
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bool
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_Safe_iterator_base::
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_M_can_compare(const _Safe_iterator_base& __x) const
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{
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return (!_M_singular()
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&& !__x._M_singular() && _M_sequence == __x._M_sequence);
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}
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__gnu_cxx::__mutex&
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_Safe_iterator_base::
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_M_get_mutex()
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{ return safe_base_mutex; }
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void
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_Error_formatter::_Parameter::
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_M_print_field(const _Error_formatter* __formatter, const char* __name) const
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{
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assert(this->_M_kind != _Parameter::__unused_param);
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const int __bufsize = 64;
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char __buf[__bufsize];
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if (_M_kind == __iterator)
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{
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if (strcmp(__name, "name") == 0)
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{
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assert(_M_variant._M_iterator._M_name);
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__formatter->_M_print_word(_M_variant._M_iterator._M_name);
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}
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else if (strcmp(__name, "address") == 0)
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{
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__formatter->_M_format_word(__buf, __bufsize, "%p",
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_M_variant._M_iterator._M_address);
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__formatter->_M_print_word(__buf);
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}
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else if (strcmp(__name, "type") == 0)
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{
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assert(_M_variant._M_iterator._M_type);
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// TBD: demangle!
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__formatter->_M_print_word(_M_variant._M_iterator._M_type->name());
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}
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else if (strcmp(__name, "constness") == 0)
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{
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static const char* __constness_names[__last_constness] =
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{
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"<unknown>",
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"constant",
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"mutable"
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};
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__formatter->_M_print_word(__constness_names[_M_variant._M_iterator._M_constness]);
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}
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else if (strcmp(__name, "state") == 0)
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{
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static const char* __state_names[__last_state] =
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{
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"<unknown>",
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"singular",
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"dereferenceable (start-of-sequence)",
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"dereferenceable",
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"past-the-end"
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};
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__formatter->_M_print_word(__state_names[_M_variant._M_iterator._M_state]);
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}
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else if (strcmp(__name, "sequence") == 0)
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{
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assert(_M_variant._M_iterator._M_sequence);
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__formatter->_M_format_word(__buf, __bufsize, "%p",
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_M_variant._M_iterator._M_sequence);
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__formatter->_M_print_word(__buf);
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}
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else if (strcmp(__name, "seq_type") == 0)
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{
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// TBD: demangle!
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assert(_M_variant._M_iterator._M_seq_type);
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__formatter->_M_print_word(_M_variant._M_iterator._M_seq_type->name());
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}
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else
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assert(false);
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}
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else if (_M_kind == __sequence)
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{
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if (strcmp(__name, "name") == 0)
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{
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assert(_M_variant._M_sequence._M_name);
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__formatter->_M_print_word(_M_variant._M_sequence._M_name);
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}
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else if (strcmp(__name, "address") == 0)
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{
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assert(_M_variant._M_sequence._M_address);
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__formatter->_M_format_word(__buf, __bufsize, "%p",
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_M_variant._M_sequence._M_address);
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__formatter->_M_print_word(__buf);
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}
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else if (strcmp(__name, "type") == 0)
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{
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// TBD: demangle!
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assert(_M_variant._M_sequence._M_type);
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__formatter->_M_print_word(_M_variant._M_sequence._M_type->name());
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}
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else
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assert(false);
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}
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else if (_M_kind == __integer)
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{
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if (strcmp(__name, "name") == 0)
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{
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assert(_M_variant._M_integer._M_name);
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__formatter->_M_print_word(_M_variant._M_integer._M_name);
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}
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else
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assert(false);
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}
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else if (_M_kind == __string)
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{
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if (strcmp(__name, "name") == 0)
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{
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assert(_M_variant._M_string._M_name);
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__formatter->_M_print_word(_M_variant._M_string._M_name);
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}
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else
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assert(false);
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}
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else
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{
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assert(false);
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}
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}
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void
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_Error_formatter::_Parameter::
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_M_print_description(const _Error_formatter* __formatter) const
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{
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const int __bufsize = 128;
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char __buf[__bufsize];
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if (_M_kind == __iterator)
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{
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__formatter->_M_print_word("iterator ");
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if (_M_variant._M_iterator._M_name)
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{
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__formatter->_M_format_word(__buf, __bufsize, "\"%s\" ",
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_M_variant._M_iterator._M_name);
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__formatter->_M_print_word(__buf);
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}
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__formatter->_M_format_word(__buf, __bufsize, "@ 0x%p {\n",
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_M_variant._M_iterator._M_address);
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__formatter->_M_print_word(__buf);
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if (_M_variant._M_iterator._M_type)
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{
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__formatter->_M_print_word("type = ");
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_M_print_field(__formatter, "type");
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if (_M_variant._M_iterator._M_constness != __unknown_constness)
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{
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__formatter->_M_print_word(" (");
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_M_print_field(__formatter, "constness");
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__formatter->_M_print_word(" iterator)");
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}
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__formatter->_M_print_word(";\n");
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}
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if (_M_variant._M_iterator._M_state != __unknown_state)
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{
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__formatter->_M_print_word(" state = ");
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_M_print_field(__formatter, "state");
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__formatter->_M_print_word(";\n");
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}
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if (_M_variant._M_iterator._M_sequence)
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{
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__formatter->_M_print_word(" references sequence ");
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if (_M_variant._M_iterator._M_seq_type)
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{
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__formatter->_M_print_word("with type `");
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_M_print_field(__formatter, "seq_type");
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__formatter->_M_print_word("' ");
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}
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__formatter->_M_format_word(__buf, __bufsize, "@ 0x%p\n",
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_M_variant._M_sequence._M_address);
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__formatter->_M_print_word(__buf);
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}
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__formatter->_M_print_word("}\n");
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}
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else if (_M_kind == __sequence)
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{
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__formatter->_M_print_word("sequence ");
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if (_M_variant._M_sequence._M_name)
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{
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__formatter->_M_format_word(__buf, __bufsize, "\"%s\" ",
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_M_variant._M_sequence._M_name);
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__formatter->_M_print_word(__buf);
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}
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__formatter->_M_format_word(__buf, __bufsize, "@ 0x%p {\n",
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_M_variant._M_sequence._M_address);
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__formatter->_M_print_word(__buf);
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if (_M_variant._M_sequence._M_type)
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{
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__formatter->_M_print_word(" type = ");
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_M_print_field(__formatter, "type");
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__formatter->_M_print_word(";\n");
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}
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__formatter->_M_print_word("}\n");
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}
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}
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const _Error_formatter&
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_Error_formatter::_M_message(_Debug_msg_id __id) const
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{ return this->_M_message(_S_debug_messages[__id]); }
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void
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_Error_formatter::_M_error() const
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{
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const int __bufsize = 128;
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char __buf[__bufsize];
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// Emit file & line number information
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_M_column = 1;
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_M_wordwrap = false;
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if (_M_file)
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{
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_M_format_word(__buf, __bufsize, "%s:", _M_file);
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_M_print_word(__buf);
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_M_column += strlen(__buf);
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}
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if (_M_line > 0)
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{
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_M_format_word(__buf, __bufsize, "%u:", _M_line);
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_M_print_word(__buf);
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_M_column += strlen(__buf);
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}
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_M_wordwrap = true;
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_M_print_word("error: ");
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// Print the error message
|
|
assert(_M_text);
|
|
_M_print_string(_M_text);
|
|
_M_print_word(".\n");
|
|
|
|
// Emit descriptions of the objects involved in the operation
|
|
_M_wordwrap = false;
|
|
bool __has_noninteger_parameters = false;
|
|
for (unsigned int __i = 0; __i < _M_num_parameters; ++__i)
|
|
{
|
|
if (_M_parameters[__i]._M_kind == _Parameter::__iterator
|
|
|| _M_parameters[__i]._M_kind == _Parameter::__sequence)
|
|
{
|
|
if (!__has_noninteger_parameters)
|
|
{
|
|
_M_first_line = true;
|
|
_M_print_word("\nObjects involved in the operation:\n");
|
|
__has_noninteger_parameters = true;
|
|
}
|
|
_M_parameters[__i]._M_print_description(this);
|
|
}
|
|
}
|
|
|
|
abort();
|
|
}
|
|
|
|
template<typename _Tp>
|
|
void
|
|
_Error_formatter::_M_format_word(char* __buf,
|
|
int __n __attribute__ ((__unused__)),
|
|
const char* __fmt, _Tp __s) const
|
|
{
|
|
#ifdef _GLIBCXX_USE_C99
|
|
std::snprintf(__buf, __n, __fmt, __s);
|
|
#else
|
|
std::sprintf(__buf, __fmt, __s);
|
|
#endif
|
|
}
|
|
|
|
|
|
void
|
|
_Error_formatter::_M_print_word(const char* __word) const
|
|
{
|
|
if (!_M_wordwrap)
|
|
{
|
|
fprintf(stderr, "%s", __word);
|
|
return;
|
|
}
|
|
|
|
size_t __length = strlen(__word);
|
|
if (__length == 0)
|
|
return;
|
|
|
|
if ((_M_column + __length < _M_max_length)
|
|
|| (__length >= _M_max_length && _M_column == 1))
|
|
{
|
|
// If this isn't the first line, indent
|
|
if (_M_column == 1 && !_M_first_line)
|
|
{
|
|
char __spacing[_M_indent + 1];
|
|
for (int i = 0; i < _M_indent; ++i)
|
|
__spacing[i] = ' ';
|
|
__spacing[_M_indent] = '\0';
|
|
fprintf(stderr, "%s", __spacing);
|
|
_M_column += _M_indent;
|
|
}
|
|
|
|
fprintf(stderr, "%s", __word);
|
|
_M_column += __length;
|
|
|
|
if (__word[__length - 1] == '\n')
|
|
{
|
|
_M_first_line = false;
|
|
_M_column = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
_M_column = 1;
|
|
_M_print_word("\n");
|
|
_M_print_word(__word);
|
|
}
|
|
}
|
|
|
|
void
|
|
_Error_formatter::
|
|
_M_print_string(const char* __string) const
|
|
{
|
|
const char* __start = __string;
|
|
const char* __finish = __start;
|
|
const int __bufsize = 128;
|
|
char __buf[__bufsize];
|
|
|
|
while (*__start)
|
|
{
|
|
if (*__start != '%')
|
|
{
|
|
// [__start, __finish) denotes the next word
|
|
__finish = __start;
|
|
while (isalnum(*__finish))
|
|
++__finish;
|
|
if (__start == __finish)
|
|
++__finish;
|
|
if (isspace(*__finish))
|
|
++__finish;
|
|
|
|
const ptrdiff_t __len = __finish - __start;
|
|
assert(__len < __bufsize);
|
|
memcpy(__buf, __start, __len);
|
|
__buf[__len] = '\0';
|
|
_M_print_word(__buf);
|
|
__start = __finish;
|
|
|
|
// Skip extra whitespace
|
|
while (*__start == ' ')
|
|
++__start;
|
|
|
|
continue;
|
|
}
|
|
|
|
++__start;
|
|
assert(*__start);
|
|
if (*__start == '%')
|
|
{
|
|
_M_print_word("%");
|
|
++__start;
|
|
continue;
|
|
}
|
|
|
|
// Get the parameter number
|
|
assert(*__start >= '1' && *__start <= '9');
|
|
size_t __param = *__start - '0';
|
|
--__param;
|
|
assert(__param < _M_num_parameters);
|
|
|
|
// '.' separates the parameter number from the field
|
|
// name, if there is one.
|
|
++__start;
|
|
if (*__start != '.')
|
|
{
|
|
assert(*__start == ';');
|
|
++__start;
|
|
__buf[0] = '\0';
|
|
if (_M_parameters[__param]._M_kind == _Parameter::__integer)
|
|
{
|
|
_M_format_word(__buf, __bufsize, "%ld",
|
|
_M_parameters[__param]._M_variant._M_integer._M_value);
|
|
_M_print_word(__buf);
|
|
}
|
|
else if (_M_parameters[__param]._M_kind == _Parameter::__string)
|
|
_M_print_string(_M_parameters[__param]._M_variant._M_string._M_value);
|
|
continue;
|
|
}
|
|
|
|
// Extract the field name we want
|
|
enum { __max_field_len = 16 };
|
|
char __field[__max_field_len];
|
|
int __field_idx = 0;
|
|
++__start;
|
|
while (*__start != ';')
|
|
{
|
|
assert(*__start);
|
|
assert(__field_idx < __max_field_len-1);
|
|
__field[__field_idx++] = *__start++;
|
|
}
|
|
++__start;
|
|
__field[__field_idx] = 0;
|
|
|
|
_M_parameters[__param]._M_print_field(this, __field);
|
|
}
|
|
}
|
|
|
|
// Instantiations.
|
|
template
|
|
void
|
|
_Error_formatter::_M_format_word(char*, int, const char*,
|
|
const void*) const;
|
|
|
|
template
|
|
void
|
|
_Error_formatter::_M_format_word(char*, int, const char*, long) const;
|
|
|
|
template
|
|
void
|
|
_Error_formatter::_M_format_word(char*, int, const char*,
|
|
std::size_t) const;
|
|
|
|
template
|
|
void
|
|
_Error_formatter::_M_format_word(char*, int, const char*,
|
|
const char*) const;
|
|
} // namespace __gnu_debug
|