[Mesa-dev] [PATCH 1/7] util: add MAYBE_UNUSED for config dependent variables

[Grazvydas Ignotas]

This is mostly for variables that are only used in asserts and cause
unused-but-set-variable warnings in release builds. Could just use
UNUSED directly, but MAYBE_UNUSED should be less confusing and is
similar to what the Linux kernel has.

And yes __attribute__((unused)) can be used on variables on both GCC 4.2
(oldest supported by mesa) and clang 3.0 (just some random old version,
nut sure what's the minimum for mesa).

Signed-off-by: Grazvydas Ignotas <notasas at gmail.com>
---
I have no commit access, if this patch is ok, please someone push.

 src/util/macros.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/util/macros.h b/src/util/macros.h
index 0c8958f..f081bb8 100644
--- a/src/util/macros.h
+++ b/src/util/macros.h
@@ -204,6 +204,8 @@ do {                       \
 #define UNUSED
 #endif
 
+#define MAYBE_UNUSED UNUSED
+
 #ifdef HAVE_FUNC_ATTRIBUTE_WARN_UNUSED_RESULT
 #define MUST_CHECK __attribute__((warn_unused_result))
 #else
-- 
2.7.4