ref: 12934f8fb43662ca8bc906caaad5f5e8ccbb6bc1 dir: /lib/c/string/strerror.c/
#include <errno.h> #include <string.h> #undef strerror char * strerror(int errnum) { if (errnum > _sys_nerr) errnum = EUNKNOWN; return _sys_errlist[errnum]; }