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EVUTIL_ASSERT: Use sizeof() to avoid "unused variable" warnings.

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Evan Jones 2010-12-06 14:17:44 -05:00 committed by Nick Mathewson
parent 18adc3f015
commit b63ab1776b
2 changed files with 11 additions and 1 deletions
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6
buffer.c
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@ -246,6 +246,12 @@ evbuffer_chains_all_empty(struct evbuffer_chain *chain)
} }
return 1; return 1;
} }
#else
/* The definition is needed for EVUTIL_ASSERT, which uses sizeof to avoid
"unused variable" warnings. */
static inline int evbuffer_chains_all_empty(struct evbuffer_chain *chain) {
return 1;
}
#endif #endif
static void static void

6
util-internal.h
View File

@ -52,6 +52,10 @@ extern "C" {
/* A good no-op to use in macro definitions. */ /* A good no-op to use in macro definitions. */
#define _EVUTIL_NIL_STMT ((void)0) #define _EVUTIL_NIL_STMT ((void)0)
/* Suppresses the compiler's "unused variable" warnings for unused assert. */
#define _EVUTIL_NIL_CONDITION(condition) do { \
(void)sizeof(condition); \
} while(0)
/* Internal use only: macros to match patterns of error codes in a /* Internal use only: macros to match patterns of error codes in a
cross-platform way. We need these macros because of two historical cross-platform way. We need these macros because of two historical
@ -177,7 +181,7 @@ long _evutil_weakrand(void);
/* Replacement for assert() that calls event_errx on failure. */ /* Replacement for assert() that calls event_errx on failure. */
#ifdef NDEBUG #ifdef NDEBUG
#define EVUTIL_ASSERT(cond) _EVUTIL_NIL_STMT #define EVUTIL_ASSERT(cond) _EVUTIL_NIL_CONDITION(cond)
#define EVUTIL_FAILURE_CHECK(cond) 0 #define EVUTIL_FAILURE_CHECK(cond) 0
#else #else
#define EVUTIL_ASSERT(cond) \ #define EVUTIL_ASSERT(cond) \