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Avoid spurious GCC warnings in STATIC_ASSERT() macro.

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GCC 4.8 now warns about typedefs that are local to a scope and not
used anywhere within that scope.  This produced spurious warnings with
the STATIC_ASSERT() macro (which used a typedef to provoke a compile
error in the event of an assertion failure).

This patch switches to a simpler technique that avoids the warning.

v2: Avoid GCC-specific syntax.  Also update p_compiler.h.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Paul Berry 2013-04-02 09:51:47 -07:00
parent 456f40e18d
commit 5db2249493
2 changed files with 2 additions and 2 deletions
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2
src/gallium/include/pipe/p_compiler.h
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@ -255,7 +255,7 @@ void _ReadWriteBarrier(void);
*/
#define STATIC_ASSERT(COND) \
do { \
typedef int static_assertion_failed[(!!(COND))*2-1]; \
(void) sizeof(char [1 - 2*!(COND)]); \
} while (0)

2
src/mesa/main/compiler.h
View file

@ -256,7 +256,7 @@ static INLINE GLuint CPU_TO_LE32(GLuint x)
*/
#define STATIC_ASSERT(COND) \
do { \
typedef int static_assertion_failed[(!!(COND))*2-1]; \
(void) sizeof(char [1 - 2*!(COND)]); \
} while (0)