ref: 6a09d2da7e29f18a244f3a3a2959d0a78ed9540b
dir: /sys/src/libc/port/strcpy.c/
#include <u.h>
#include <libc.h>
#define N 10000
char*
strcpy(char *s1, char *s2)
{
char *os1;
os1 = s1;
while(!memccpy(s1, s2, 0, N)) {
s1 += N;
s2 += N;
}
return os1;
}