ref: 56cb1396d9f421006f2907dc4d504127f8ed0e1d
dir: /include/assert.h/
extern void __assert(char *, char *, long); #undef assert #ifndef NDEBUG # define assert(exp) ((exp) ? (void) 0 : __assert(#exp, __FILE__, __LINE__)) #else # define assert(exp) ((void) 0) #endif