aboutsummaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorGuenter Roeck <linux@roeck-us.net>2013-04-29 16:17:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-29 18:28:13 -0700
commit2fb0815c9ee6b9ac50e15dd8360ec76d9fa46a22 (patch)
treef643cc99fbca761607b39a9ca47e710f05b91e8a /include
parent657eee7d25fb1422422ca32d5619185ae56a245d (diff)
downloadlinux-2fb0815c9ee6b9ac50e15dd8360ec76d9fa46a22.tar.gz
gcc4: disable __compiletime_object_size for GCC 4.6+
__builtin_object_size is known to be broken on gcc 4.6+. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48880 for details. This causes unnecssary build warnings and errors such as In function 'copy_from_user', inlined from 'sb16_copy_from_user' at sound/oss/sb_audio.c:878:22: arch/x86/include/asm/uaccess_32.h:211:26: error: call to 'copy_from_user_overflow' declared with attribute error: copy_from_user() buffer size is not provably correct make[3]: [sound/oss/sb_audio.o] Error 1 (ignored) Disable it where broken. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/compiler-gcc4.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
index 68b162d9225..842de225055 100644
--- a/include/linux/compiler-gcc4.h
+++ b/include/linux/compiler-gcc4.h
@@ -13,7 +13,7 @@
#define __must_check __attribute__((warn_unused_result))
#define __compiler_offsetof(a,b) __builtin_offsetof(a,b)
-#if GCC_VERSION >= 40100
+#if GCC_VERSION >= 40100 && GCC_VERSION < 40600
# define __compiletime_object_size(obj) __builtin_object_size(obj, 0)
#endif