]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
lib/test_hash.c: fix warning in preprocessor symbol evaluation
authorGeert Uytterhoeven <geert@linux-m68k.org>
Thu, 1 Sep 2016 23:14:53 +0000 (16:14 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 2 Sep 2016 00:52:01 +0000 (17:52 -0700)
commite6173ba42bbdba05fd4f3021c0beda0506271507
tree0b3efdf4ee72f320072389c836b501fbda0c0180
parented76b7a131f41c91b0c725d472f9b969d75ce888
lib/test_hash.c: fix warning in preprocessor symbol evaluation

Some versions of gcc don't like tests for the value of an undefined
preprocessor symbol, even in the #else branch of an #ifndef:

    lib/test_hash.c:224:7: warning: "HAVE_ARCH__HASH_32" is not defined [-Wundef]
     #elif HAVE_ARCH__HASH_32 != 1
   ^
    lib/test_hash.c:229:7: warning: "HAVE_ARCH_HASH_32" is not defined [-Wundef]
     #elif HAVE_ARCH_HASH_32 != 1
   ^
    lib/test_hash.c:234:7: warning: "HAVE_ARCH_HASH_64" is not defined [-Wundef]
     #elif HAVE_ARCH_HASH_64 != 1
   ^

Seen with gcc 4.9, not seen with 4.1.2.

Change the logic to only check the value inside an #ifdef to fix this.

Fixes: 468a9428521e7d00 ("<linux/hash.h>: Add support for architecture-specific functions")
Link: http://lkml.kernel.org/r/20160829214952.1334674-4-arnd@arndb.de
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: George Spelvin <linux@sciencehorizons.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
lib/test_hash.c