ref: 8e212d00e17c23b79489215d6cc41da22381a550 dir: /lib/c/string/strerror.c/
#include <errno.h> #include <string.h> #undef strerror char * strerror(int errnum) { if (errnum < _sys_nerr) return _sys_errlist[errnum]; else return "Unknown error"; }