Gcc versions before 4.4 do not recognize the __optimize__ compiler
attribute:
warning: ‘__optimize__’ attribute directive ignored
Fixes: 7375ae3a0b79ea07 ("compiler-gcc.h: Introduce __nostackprotector function
attribute")
Signed-off-by: Geert Uytterhoeven <[email protected]>
---
Can anyone please verify this?
Apparently __nostackprotector is used on x86 only, which is usually
served by modern compilers.
---
include/linux/compiler-gcc.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 0a278a527944ad2f..73bc63e0a1c4b664 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -167,8 +167,6 @@
#if GCC_VERSION >= 40100
# define __compiletime_object_size(obj) __builtin_object_size(obj, 0)
-
-#define __nostackprotector
__attribute__((__optimize__("no-stack-protector")))
#endif
#if GCC_VERSION >= 40300
@@ -198,6 +196,7 @@
#if GCC_VERSION >= 40400
#define __optimize(level) __attribute__((__optimize__(level)))
+#define __nostackprotector __optimize("no-stack-protector")
#endif /* GCC_VERSION >= 40400 */
#if GCC_VERSION >= 40500
--
2.7.4
