ref: c0fef42e25d7b90e3982d6be1d571d631b895ef6
dir: /test.c/
#include <u.h>
#include <libc.h>
void
main(int argc, char **argv)
{
char *x;
int a[1024];
int y;
x = malloc(123);
x[1] = 123;
y = x[1];
argv[0][0] = y;
free(x);
argv[0][0] = x[0];
exits(x);
}