gcc-4.9/gcc/testsuite/g++.dg/vect/pr21734_2.cc


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/* { dg-do compile } */

struct A
{
  int a[4];
  int* operator[](int i) { return &a[i]; }
};

void foo(A a1, A &a2)
{
  a1[1][1]=0;
  for (int i=0; i<4; ++i)
    a2.a[i]=0;
}

/* { dg-final { cleanup-tree-dump "vect" } } */