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							// RUN: %clang_cc1 -fsyntax-only -verify %s
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							// expected-no-diagnostics
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							// PR12497
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							namespace test0 {
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							  class A {
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							  protected:
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							    A() {}
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							    A(const A &) {}
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							    ~A() {}
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							    A &operator=(const A &a) { return *this; }
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							  };
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							  class B : public A {};
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							  void test() {
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							    B b1;
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							    B b2 = b1;
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							    b1 = b2;
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							  }
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							}
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