gcc-4.9/gcc/testsuite/g++.dg/lookup/builtin4.C


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// Copyright (C) 2007 Free Software Foundation
// Contributed by Ollie Wild <aaw@google.com>
// Origin: Volker Reichelt <reichelt@gcc.gnu.org>
// { dg-do compile }

// PR 31749: ICE with redeclaration of builtin

namespace std
{
  union abort;
}

union abort;

using std::abort; // { dg-error "" }