gcc/testsuite/g++.dg/vect/pr21734_2.cc

   1 /* { dg-do compile } */
   2
   3 struct A
   4 {
   5   int a[4];
   6   int* operator[](int i) { return &a[i]; }
   7 };
   8
   9 void foo(A a1, A &a2)
  10 {
  11   a1[1][1]=0;
  12   for (int i=0; i<4; ++i)
  13     a2.a[i]=0;
  14 }
  15
  16 /* { dg-final { cleanup-tree-dump "vect" } } */