ref: 5dbde374a62f0923bc720ca3f42884cd7340ef96
dir: /include/assert.h/
extern void __assert(char *exp, char *file, long line); #undef assert #ifndef NDEBUG # define assert(exp) ((exp) ? (void) 0 : __assert(#exp, __FILE__, __LINE__)) #else # define assert(exp) ((void)0) #endif