On 04/03/2013 12:22 PM, Paul Berry wrote:
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.
---
  src/gallium/include/pipe/p_compiler.h | 2 +-
  src/mesa/main/compiler.h              | 2 +-
  2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/gallium/include/pipe/p_compiler.h 
b/src/gallium/include/pipe/p_compiler.h
index a131969..78ec83c 100644
--- a/src/gallium/include/pipe/p_compiler.h
+++ b/src/gallium/include/pipe/p_compiler.h
@@ -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)


diff --git a/src/mesa/main/compiler.h b/src/mesa/main/compiler.h
index 8b23665..8431534 100644
--- a/src/mesa/main/compiler.h
+++ b/src/mesa/main/compiler.h
@@ -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)

Yeah, I just upgraded yesterday and started seeing these. thanks for fixing them, Paul.

Reviewed-by: Kenneth Graunke <kenn...@whitecape.org>
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