ref: fdf8af5e94a2989d1b3c94aa5c9f43139d2f56c6
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;
}