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sparse: define dummy BUILD_BUG_ON definition for sparse 

BUILD_BUG_ON() causes a syntax error to detect coding errors.  So it
causes sparse to detect an error too.  This reduces sparse's usefulness.

This patch makes a dummy BUILD_BUG_ON() definition for sparse.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
KOSAKI Motohiro 2011-05-24 17:13:16 -07:00 committed by Linus Torvalds
parent d2b463135f
commit 903c0c7cdc
1 changed files with 8 additions and 0 deletions
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8
include/linux/kernel.h
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@ -638,6 +638,13 @@ struct sysinfo {
char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */
};
#ifdef __CHECKER__
#define BUILD_BUG_ON_NOT_POWER_OF_2(n)
#define BUILD_BUG_ON_ZERO(e)
#define BUILD_BUG_ON_NULL(e)
#define BUILD_BUG_ON(condition)
#else /* __CHECKER__ */
/* Force a compilation error if a constant expression is not a power of 2 */
#define BUILD_BUG_ON_NOT_POWER_OF_2(n) \
BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0))
@ -674,6 +681,7 @@ extern int __build_bug_on_failed;
if (condition) __build_bug_on_failed = 1; \
} while(0)
#endif
#endif /* __CHECKER__ */
/* Trap pasters of __FUNCTION__ at compile-time */
#define __FUNCTION__ (__func__)