text: #include "aliascheck.h"
  void foo(int **x,int**y,int **z, int *w){
  	int *t;
  	*y = w;
  	t = *x;
  	*z = t;
  
  }
  
  int main(){
  
  	int *a,*b,*c,d,*p,*q,r,a1;
      a = &a1;
  	foo(&a,&b,&c,&d);
      MUSTALIAS(b,&d);
      MUSTALIAS(c,&a1);
  	foo(&p,&p,&q,&r);
      MUSTALIAS(p,&r);
      MUSTALIAS(p,q);
      NOALIAS(b,p);
      NOALIAS(c,p);
  }
  