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* [Bug c/40880] New: stdarg.h does not define va_copy when building for C89+POSIX
@ 2009-07-27 19:46 bmerry at gmail dot com
2009-07-27 19:47 ` [Bug c/40880] " bmerry at gmail dot com
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: bmerry at gmail dot com @ 2009-07-27 19:46 UTC (permalink / raw)
To: gcc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 2192 bytes --]
POSIX 2001 specifies that va_copy
(http://www.opengroup.org/onlinepubs/009695399/functions/va_copy.html) is
defined by stdarg.h. However, when compiling with -std=c89
-D_POSIX_C_SOURCE=200112L this does not happen. I've encountered this in 4.3.2,
but a quick peek in svn makes it look this this is current.
I'll attach the source and preprocessed output.
Command line:
gcc -std=c89 -D_POSIX_C_SOURCE=200112L -Wall -c no_va_copy.c -save-temps
no_va_copy.c: In function copy_va_list:
no_va_copy.c:8: warning: implicit declaration of function va_copy
gcc -v:
Using built-in specs.
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-4.3.2-r3/work/gcc-4.3.2/configure --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.3.2
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.3.2/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.3.2
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.3.2/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.3.2/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.3.2/include/g++-v4
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec
--disable-fixed-point --enable-nls --without-included-gettext
--with-system-zlib --disable-checking --disable-werror --enable-secureplt
--enable-multilib --enable-libmudflap --disable-libssp --enable-libgomp
--disable-libgcj --enable-languages=c,c++,treelang,fortran --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo 4.3.2-r3 p1.6,
pie-10.1.5'
Thread model: posix
gcc version 4.3.2 (Gentoo 4.3.2-r3 p1.6, pie-10.1.5)
--
Summary: stdarg.h does not define va_copy when building for
C89+POSIX
Product: gcc
Version: 4.3.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: bmerry at gmail dot com
GCC build triplet: x86_64-pc-linux-gnu
GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40880
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/40880] stdarg.h does not define va_copy when building for C89+POSIX
2009-07-27 19:46 [Bug c/40880] New: stdarg.h does not define va_copy when building for C89+POSIX bmerry at gmail dot com
2009-07-27 19:47 ` [Bug c/40880] " bmerry at gmail dot com
@ 2009-07-27 19:47 ` bmerry at gmail dot com
2009-07-27 19:48 ` pinskia at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: bmerry at gmail dot com @ 2009-07-27 19:47 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from bmerry at gmail dot com 2009-07-27 19:47 -------
Created an attachment (id=18259)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18259&action=view)
Preprocessed file
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40880
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/40880] stdarg.h does not define va_copy when building for C89+POSIX
2009-07-27 19:46 [Bug c/40880] New: stdarg.h does not define va_copy when building for C89+POSIX bmerry at gmail dot com
@ 2009-07-27 19:47 ` bmerry at gmail dot com
2009-07-27 19:47 ` bmerry at gmail dot com
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: bmerry at gmail dot com @ 2009-07-27 19:47 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from bmerry at gmail dot com 2009-07-27 19:46 -------
Created an attachment (id=18258)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18258&action=view)
Source file illustrating the problem
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40880
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/40880] stdarg.h does not define va_copy when building for C89+POSIX
2009-07-27 19:46 [Bug c/40880] New: stdarg.h does not define va_copy when building for C89+POSIX bmerry at gmail dot com
2009-07-27 19:47 ` [Bug c/40880] " bmerry at gmail dot com
2009-07-27 19:47 ` bmerry at gmail dot com
@ 2009-07-27 19:48 ` pinskia at gcc dot gnu dot org
2009-07-27 21:02 ` joseph at codesourcery dot com
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2009-07-27 19:48 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from pinskia at gcc dot gnu dot org 2009-07-27 19:48 -------
*** Bug 40879 has been marked as a duplicate of this bug. ***
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40880
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/40880] stdarg.h does not define va_copy when building for C89+POSIX
2009-07-27 19:46 [Bug c/40880] New: stdarg.h does not define va_copy when building for C89+POSIX bmerry at gmail dot com
` (2 preceding siblings ...)
2009-07-27 19:48 ` pinskia at gcc dot gnu dot org
@ 2009-07-27 21:02 ` joseph at codesourcery dot com
2009-07-28 7:28 ` bmerry at gmail dot com
2009-11-22 19:58 ` jsm28 at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: joseph at codesourcery dot com @ 2009-07-27 21:02 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from joseph at codesourcery dot com 2009-07-27 21:02 -------
Subject: Re: New: stdarg.h does not define va_copy when building
for C89+POSIX
On Mon, 27 Jul 2009, bmerry at gmail dot com wrote:
> POSIX 2001 specifies that va_copy
> (http://www.opengroup.org/onlinepubs/009695399/functions/va_copy.html) is
> defined by stdarg.h. However, when compiling with -std=c89
> -D_POSIX_C_SOURCE=200112L this does not happen. I've encountered this in 4.3.2,
> but a quick peek in svn makes it look this this is current.
POSIX 2001 is based on C99 and does not have any C89 language bindings, so
it is not meaningful to say it imposes any requirements when not building
in C99 mode.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40880
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/40880] stdarg.h does not define va_copy when building for C89+POSIX
2009-07-27 19:46 [Bug c/40880] New: stdarg.h does not define va_copy when building for C89+POSIX bmerry at gmail dot com
` (3 preceding siblings ...)
2009-07-27 21:02 ` joseph at codesourcery dot com
@ 2009-07-28 7:28 ` bmerry at gmail dot com
2009-11-22 19:58 ` jsm28 at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: bmerry at gmail dot com @ 2009-07-28 7:28 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from bmerry at gmail dot com 2009-07-28 07:28 -------
Thanks, I wasn't aware of that. It's slightly annoying that the behaviour is
different from glibc (I use -std=c89 so that the compiler keeps me honest,
since I'm working on code that has to compile on compilers that still haven't
gotten around to C99), but I can live with using __va_copy.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40880
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/40880] stdarg.h does not define va_copy when building for C89+POSIX
2009-07-27 19:46 [Bug c/40880] New: stdarg.h does not define va_copy when building for C89+POSIX bmerry at gmail dot com
` (4 preceding siblings ...)
2009-07-28 7:28 ` bmerry at gmail dot com
@ 2009-11-22 19:58 ` jsm28 at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: jsm28 at gcc dot gnu dot org @ 2009-11-22 19:58 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from jsm28 at gcc dot gnu dot org 2009-11-22 19:58 -------
As discussed, not a bug.
--
jsm28 at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40880
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2009-11-22 19:58 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2009-07-27 19:46 [Bug c/40880] New: stdarg.h does not define va_copy when building for C89+POSIX bmerry at gmail dot com
2009-07-27 19:47 ` [Bug c/40880] " bmerry at gmail dot com
2009-07-27 19:47 ` bmerry at gmail dot com
2009-07-27 19:48 ` pinskia at gcc dot gnu dot org
2009-07-27 21:02 ` joseph at codesourcery dot com
2009-07-28 7:28 ` bmerry at gmail dot com
2009-11-22 19:58 ` jsm28 at gcc dot gnu dot org
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