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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
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// PR c++/81013

struct A
{
  virtual void foo() const;
};

union B : A  // { dg-error "derived union 'B' invalid" }
{
  void foo() const;
};

void bar(const B& b)
{
  b.foo();
}