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| author | Kees Cook <keescook@chromium.org> | 2017-04-05 19:49:19 +0300 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2017-05-28 20:23:03 +0300 |
| commit | 0aa5e49c6845ecd82531341085f367767c9f419a (patch) | |
| tree | dd7b9d4a2bad900e26a42810304ae571df61183a | |
| parent | 1132e1e448ce51e3b51fc7afdf661633abc4f202 (diff) | |
| download | linux-0aa5e49c6845ecd82531341085f367767c9f419a.tar.xz | |
compiler: Add __designated_init annotation
This allows structure annotations for requiring designated initialization
in GCC 5.1.0 and later:
https://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html
The structure randomization layout plugin will be using this to help
identify structures that need this form of initialization.
Signed-off-by: Kees Cook <keescook@chromium.org>
| -rw-r--r-- | include/linux/compiler-gcc.h | 8 | ||||
| -rw-r--r-- | include/linux/compiler.h | 4 |
2 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index 0efef9cf014f..386caf6771ed 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -294,6 +294,14 @@ #define __no_sanitize_address __attribute__((no_sanitize_address)) #endif +#if GCC_VERSION >= 50100 +/* + * Mark structures as requiring designated initializers. + * https://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html + */ +#define __designated_init __attribute__((designated_init)) +#endif + #endif /* gcc version >= 40000 specific checks */ #if !defined(__noclone) diff --git a/include/linux/compiler.h b/include/linux/compiler.h index f8110051188f..80a1dea36cbe 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -440,6 +440,10 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s # define __attribute_const__ /* unimplemented */ #endif +#ifndef __designated_init +# define __designated_init +#endif + #ifndef __latent_entropy # define __latent_entropy #endif |