ref: da085a2d4cca788686b8f68b2555040cf29dc16c
dir: /sys/src/libregexp/regerror.c/
#include <u.h>
#include <libc.h>
#include <regexp.h>
void
regerror(char *s)
{
char buf[132];
strcpy(buf, "regerror: ");
strcat(buf, s);
strcat(buf, "\n");
write(2, buf, strlen(buf));
exits("regerr");
}