jemalloc/include/jemalloc/internal/assert.h

/*
 * Define a custom assert() in order to reduce the chances of deadlock during
 * assertion failure.
 */
#ifndef assert
#define	assert(e) do {							\
	if (unlikely(config_debug && !(e))) {				\
		malloc_printf(						\
		    "<jemalloc>: %s:%d: Failed assertion: \"%s\"\n",	\
		    __FILE__, __LINE__, #e);				\
		abort();						\
	}								\
} while (0)
#endif

#ifndef not_reached
#define	not_reached() do {						\
	if (config_debug) {						\
		malloc_printf(						\
		    "<jemalloc>: %s:%d: Unreachable code reached\n",	\
		    __FILE__, __LINE__);				\
		abort();						\
	}								\
	unreachable();							\
} while (0)
#endif

#ifndef not_implemented
#define	not_implemented() do {						\
	if (config_debug) {						\
		malloc_printf("<jemalloc>: %s:%d: Not implemented\n",	\
		    __FILE__, __LINE__);				\
		abort();						\
	}								\
} while (0)
#endif

#ifndef assert_not_implemented
#define	assert_not_implemented(e) do {					\
	if (unlikely(config_debug && !(e)))				\
		not_implemented();					\
} while (0)
#endif