include/assert.h

#undef assert

#if __STDC_VERSION__ >= 201112L
#elif defined(__GNUC__)
#define _Noreturn __attribute__((__noreturn__))
#else
#define _Noreturn
#endif

#ifdef NDEBUG
#define	assert(x) (void)0
#else
#define assert(x) ((x) || (__assert_fail(#x, __FILE__, __LINE__, __func__),0))
#endif

#ifdef __cplusplus
extern "C" {
#endif

_Noreturn void __assert_fail (const char *, const char *, int, const char *);

#ifdef __cplusplus
}
#endif