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Commit 0aa5e49c authored Apr 05, 2017 by Kees Cook

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>

parent 1132e1e4

include/linux/compiler-gcc.h

+8 −0

Original line number	Diff line number	Diff line
		@@ -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)

include/linux/compiler.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -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