diff options
| author | Yuxuan Shui <[email protected]> | 2013-11-02 00:14:05 +0800 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2014-04-14 09:28:53 -0700 |
| commit | 6c48cd8ac223eb00cb4dadebcbe4ce1dfdfc6b76 (patch) | |
| tree | b22afd33a29f169a49eb5d1f30a0b992df86c563 /include | |
| parent | acf0ade362cb8b26d67770114ee6fa17816e6b65 (diff) | |
This patch add a CTASSERT macro for compile time assertion.
This macro makes the compile to spit "mixed definition and code"
warning, I can't find a way to avoid it.
This patch lays some groundwork for the persistent l2arc feature.
See https://www.illumos.org/issues/3525.
Signed-off-by: Yuxuan Shui <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #303
Diffstat (limited to 'include')
| -rw-r--r-- | include/sys/debug.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/sys/debug.h b/include/sys/debug.h index f3f3529a9..9fa2653d4 100644 --- a/include/sys/debug.h +++ b/include/sys/debug.h @@ -145,4 +145,15 @@ do { \ #define VERIFY(x) ASSERT(x) #endif /* NDEBUG */ + +/* + * Compile-time assertion. The condition 'x' must be constant. + */ +#define CTASSERT_GLOBAL(x) _CTASSERT(x, __LINE__) +#define CTASSERT(x) { _CTASSERT(x, __LINE__); } +#define _CTASSERT(x, y) __CTASSERT(x, y) +#define __CTASSERT(x, y) \ + typedef char __attribute__ ((unused)) \ + __compile_time_assertion__ ## y[(x) ? 1 : -1] + #endif /* SPL_DEBUG_H */ |