forked from OSchip/llvm-project
46 lines
1.6 KiB
C++
46 lines
1.6 KiB
C++
// RUN: %clang_cc1 -std=c++20 %s -verify
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template <auto> struct Nothing {};
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Nothing<[]() { return 0; }()> nothing;
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template <typename> struct NothingT {};
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Nothing<[]() { return 0; }> nothingT;
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template <typename T>
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concept True = [] { return true; }();
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static_assert(True<int>);
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static_assert(sizeof([] { return 0; }));
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static_assert(sizeof([] { return 0; }()));
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void f() noexcept(noexcept([] { return 0; }()));
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using a = decltype([] { return 0; });
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using b = decltype([] { return 0; }());
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using c = decltype([]() noexcept(noexcept([] { return 0; }())) { return 0; });
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using d = decltype(sizeof([] { return 0; }));
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template <auto T>
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int unique_test1();
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static_assert(&unique_test1<[](){}> != &unique_test1<[](){}>);
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template <class T>
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auto g(T) -> decltype([]() { T::invalid; } ());
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auto e = g(0); // expected-error{{no matching function for call}}
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// expected-note@-2 {{substitution failure}}
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namespace PR52073 {
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// OK, these are distinct functions not redefinitions.
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template<typename> void f(decltype([]{})) {} // expected-note {{candidate}}
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template<typename> void f(decltype([]{})) {} // expected-note {{candidate}}
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void use_f() { f<int>({}); } // expected-error {{ambiguous}}
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// Same.
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template<int N> void g(const char (*)[([]{ return N; })()]) {} // expected-note {{candidate}}
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template<int N> void g(const char (*)[([]{ return N; })()]) {} // expected-note {{candidate}}
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// FIXME: We instantiate the lambdas into the context of the function template,
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// so we think they're dependent and can't evaluate a call to them.
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void use_g() { g<6>(&"hello"); } // expected-error {{no matching function}}
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}
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