Bug#219664: linux/compiler.h give warning with gcc -Wall

[Bill Allombert <ballombe@debian.org>]

Package: linux-kernel-headers
Version: 2.5.999-test7-bk-8
Severity: normal

Dear Glibc maintainers,
Since a few days, the following program

---test.c--------
#include <signal.h>
-----------------
give:

$ gcc-2.95 -c -Wall test.c 2>&1
In file included from /usr/include/asm/sigcontext.h:4,
                 from /usr/include/bits/sigcontext.h:28,
                 from /usr/include/signal.h:326,
                 from test.c:1:
/usr/include/linux/compiler.h:17: warning: `__attribute_used__' redefined
/usr/include/sys/cdefs.h:195: warning: this is the location of the previous definition

Here the relevant code

/usr/include/linux/compiler.h:12
#if !defined(__KERNEL__)
/* Debian: Most of these are inappropriate for userspace.  */
/* We don't define likely, unlikely, or barrier; they're namespace-intrusive
   and should not be needed outside of __KERNEL__.  */
# define __attribute_pure__
# define __attribute_used__
# define __deprecated
#else

and
/usr/include/sys/cdefs.h:188:
/* At some point during the gcc 3.1 development the `used' attribute
   for functions was introduced.  We don't want to use it unconditionally
   (although this would be possible) since it generates warnings.  */
#if __GNUC_PREREQ (3,1)
# define __attribute_used__ __attribute__ ((__used__))
# define __attribute_noinline__ __attribute__ ((__noinline__))
#else
# define __attribute_used__ __attribute__ ((__unused__))
# define __attribute_noinline__ /* Ignore */
#endif

Cheers,
Bill.

-- System Information:
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux pari 2.4.18-14smp #1 SMP Wed Sep 4 11:55:37 EDT 2002 i686
Locale: LANG=français, LC_CTYPE=français

-- no debconf information