ref: ee0956cca3f5a2e8ea346336086e37296b3767d9
dir: /src/libc/string/strerror.c/
#include <errno.h> #include <string.h> #undef strerror char * strerror(int errnum) { if (errnum > EUNKNOWN || errnum <= 0) errnum = EUNKNOWN; return _sys_errlist[errnum]; }