Changes to support building with _POSIX_SOURCE set to 199309L:
1. Add sys/_posix.h to handle those preprocessor defs that POSIX
says have effects when defined before including any header files;
2. Change POSIX4_VISIBLE back to _POSIX4_VISIBLE
3. Add _POSIX4_VISIBLE_HISTORICALLY for pre-existing BSD features now
defined in POSIX. These show up when:
_POSIX_SOURCE and _POSIX_C_SOURCE are not set or
_POSIX_C_SOURCE is set >= 199309L
and vanish when:
_POSIX_SOURCE is set or _POSIX_C_SOURCE is < 199309L.
4. Explain these in man 9 posix4;
5. Include _posix.h and conditionalize on new feature test.
is generated. It must be installed in both /usr/include/rpc/ and
/usr/include/rpcsvc/ for historical reasons. The generated version
was once missing ANSI prototypes because the wrong flags were passed
to rpcgen, but that is fixed now. The committed version had `#pragma
indent' which gratuitously broke K&R support. Apart from this, all
versions before and after this commit are identical.
Move sigjmp_buf and jmp_buf structure definitions to machine/setjmp.h
so that i386 can continue to use int as the basic register type and
alpha can use long. Bruce was concerned about possible differing
alignment. I've left the definition of _JBLEN in machine/setjmp.h
even though Bruce's example used the number directly. I don't know if
any other code relies on _JBLEN, so I left it to avoid potential
breakage.
Note: this may cause some problems in a few cases. With very old versions
of rpcgen, if you defined a procedure called foo, then rpcen would create
client stubs for function foo_1() and server stubs _also_ with function
foo_1(). This only worked because of the lack of ANSI prototypes: the
client side stub takes different arguments than the server side stub.
(The client side takes a CLIENT * handle, while the server side wants
an svc_req *.)
To fix this conflict, rpcgen in ANSI mode generates foo_1() for the client
and foo_1_svc() for the server. RPC server code that depends on the old
behavior might break because of this. (Fixing it is just a matter of
adding the _svc suffix onto the server procedure names.)
isn't gratuitously broken. This also prevents ANSI compilers from
recognizing the pragma as a request to run /usr/games/hack...
FreeBSD Ids should be in comments or rcsids, not in `#pragma ident's
(which are equivalent to comments when compiled by gcc), and the
only FreeBSD change in this file seems to be adding the Id.
definitions for architectures that we don't have libc MD source for.
Change 'int' to 'long' in sigjmp_buf and jmp_buf structures so
that they are suitable for the register size on both i386 and alpha.
Although FreeBSD defines these structures differently to NetBSD,
the element size is now the same.
If Bruce doesn't like this [8-)], we'll need to add a typedef to
each <machine/setjmp.h> and use that in <setjmp.h>.
RFC 1350 isn't very explicit about this, but the use of signed
integers doesn't seem to make sense.
Should be in 2.2.5, but is probably too late to be verified completely.
PR: bin/4502
Submitted by: Dirk Nehrling <nerle@pdv.de> via Lars Koeller
