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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [g++.dg/] [init/] [elide1.C] - Blame information for rev 816

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Line No. Rev Author Line
1 149 jeremybenn
// { dg-do run }
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// Test that the destructor for a temporary passed by value isn't run
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// until end of full-expression, as per [class.copy]:
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// Whenever a temporary class object is copied using a copy  constructor,
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// and  this  object  and  the copy have the same cv-unqualified type, an
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// implementation is permitted to treat the original and the copy as  two
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// different  ways of referring to the same object and not perform a copy
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// at all, even if the class copy constructor  or  destructor  have  side
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// effects....                                       In these cases,  the
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// object  is  destroyed  at the later of times when the original and the
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// copy would have been destroyed without the optimization.
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// Here, the temporary would be destroyed later than the parm, so either we
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// must suppress the optimization in this case or destroy value parms in the
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// caller.
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int d;
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struct A {
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  A () { }
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  A (const A&) { }
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  ~A() { ++d; }
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};
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void f (A a) { }
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int main ()
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{
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  int r;
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  f (A ()), r = d;
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  if (r < d && d)
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    return 0;
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  else
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    return 1;
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}

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