view gcc/testsuite/g++.dg/expr/lval2.C @ 131:84e7813d76e9

gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
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// PR c++/19199

// { dg-do run }

// We used to turn the COND_EXPR lvalue into a MIN_EXPR rvalue, and
// then return a reference to a temporary in qMin.

#include <assert.h>

enum Foo { A, B };

template<typename T> T &qMin(T &a, T &b) 
{
  return a < b ? a : b;
}

int main (int,  char **)
{
  Foo f = A;
  Foo g = B;
  Foo &h = qMin(f, g);
  assert (&h == &f || &h == &g);
  const Foo &i = qMin((const Foo&)f, (const Foo&)g);
  assert (&i == &f || &i == &g);
  return 0;
}