ref: de4795d333b7ac4c514288683e30afb1199f0dd7
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]; }