ref: e661871dd3e996607e7444be1e0ca86be0a8565f
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