scc

 1#include <string.h>
 2
 3#undef strcmp
 4
 5int
 6strcmp(const char *s1, const char *s2)
 7{
 8	while (*s1 && *s1 == *s2)
 9		++s1, ++s2;
10	return *(unsigned char *) s1 - *(unsigned char *) s2;
11}