46 lines
985 B
C++
46 lines
985 B
C++
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// RUN: %clang_cc1 -std=c++14 -verify %s
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// RUN: %clang_cc1 -std=c++14 -verify %s -DHAVE_UNQUALIFIED_LOOKUP_RESULTS
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// expected-no-diagnostics
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namespace address_of {
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#ifdef HAVE_UNQUALIFIED_LOOKUP_RESULTS
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struct Q {};
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void operator&(Q);
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#endif
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template<typename T> struct A {
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static constexpr auto x = &T::value;
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};
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template<typename T> struct B {
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constexpr int operator&() { return 123; }
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};
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template<typename T> struct C {
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static_assert(sizeof(T) == 123, "");
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};
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struct X1 {
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static B<X1> value;
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};
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struct X2 : B<X2> {
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enum E { value };
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friend constexpr int operator&(E) { return 123; }
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};
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struct Y1 {
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C<int> *value;
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};
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struct Y2 {
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C<int> value();
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};
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// ok, uses ADL to find operator&:
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static_assert(A<X1>::x == 123, "");
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static_assert(A<X2>::x == 123, "");
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// ok, does not use ADL so does not instantiate C<T>:
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static_assert(A<Y1>::x == &Y1::value, "");
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static_assert(A<Y2>::x == &Y2::value, "");
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}
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