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// { dg-do run  }

// Origin: Mark Mitchell 

// This test case checks that the return value optimization works for

// empty classes.

// PR c++/5995

extern "C" void abort();

extern "C" int printf (const char *, ...);

int i;

struct A;

struct A* as[10];

struct A {

  A () { as[i++] = this; }

  A (const A&) { as[i++] = this; }

  ~A() { if (i == 0 || as[--i] != this) abort(); }

};

A f() { return A(); }

int main ()

{

  A a (f ());

}