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