From: Guenter Roeck Date: Mon, 29 Apr 2013 23:17:15 +0000 (-0700) Subject: gcc4: disable __compiletime_object_size for GCC 4.6+ X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~123^2~280 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2fb0815c9ee6b9ac50e15dd8360ec76d9fa46a22;p=pandora-kernel.git 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 Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h index 68b162d92254..842de225055f 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