main.c

#include <stdio.h>
void*memset(void*s,int c,int n){}
int main(int argc, char *argv[]) {
    while(argc --> 0) argv[argc] = 0;
    printf("%s\n", argv);
    return 0;
}
/*
`gcc .\main.c -O3 -o main;./main`
and
`gcc .\main.c -o main;./main`
will give different result
*/