ref: fe2b29d13bac3ab3c16490b859f452201c6b4c77
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]; }