Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/src/ape/lib/regexp/regerror.c
#include <stdlib.h> #include <stdio.h> #include <string.h> #include "regexp.h" void regerror(char *s) { char buf[132]; strcpy(buf, "regerror: "); strcat(buf, s); strcat(buf, "\n"); fwrite(buf, 1, strlen(buf), stderr); exit(1); }