ref: b9a0624cec5e21d49fc8812aa6c9f58171fb0bb7
dir: /sys/src/ape/lib/ap/gen/strcpy.c/
#include <string.h>
#define	N	10000
char*
strcpy(char *s1, const char *s2)
{
	char *os1;
	os1 = s1;
	while(!memccpy(s1, s2, 0, N)) {
		s1 += N;
		s2 += N;
	}
	return os1;
}