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61 lines
1.5 KiB
61 lines
1.5 KiB
4 months ago
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// RUN: %clang_cc1 -std=c++2a -verify %s
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template<typename T, typename U>
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constexpr static bool is_same_v = false;
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template<typename T>
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constexpr static bool is_same_v<T, T> = true;
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template<typename T>
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concept AtLeast2 = sizeof(T) >= 2;
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template<typename T>
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concept AtMost8 = sizeof(T) <= 8;
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int foo() requires AtLeast2<long> && AtMost8<long> {
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return 0;
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}
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double foo() requires AtLeast2<char> {
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return 0.0;
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}
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char bar() requires AtLeast2<char> { // expected-note {{possible target for call}}
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return 1.0;
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}
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short bar() requires AtLeast2<long> && AtMost8<long> {
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// expected-note@-1{{possible target for call}}
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// expected-note@-2{{candidate function}}
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return 0.0;
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}
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int bar() requires AtMost8<long> && AtLeast2<long> {
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// expected-note@-1{{possible target for call}}
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// expected-note@-2{{candidate function}}
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return 0.0;
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}
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char baz() requires AtLeast2<char> {
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return 1.0;
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}
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short baz() requires AtLeast2<long> && AtMost8<long> {
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return 0.0;
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}
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int baz() requires AtMost8<long> && AtLeast2<long> {
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return 0.0;
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}
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long baz() requires AtMost8<long> && AtLeast2<long> && AtLeast2<short> {
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return 3.0;
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}
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void a() {
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static_assert(is_same_v<decltype(&foo), int(*)()>);
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static_assert(is_same_v<decltype(&bar), long(*)()>);
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// expected-error@-1{{reference to overloaded function could not be resolved; did you mean to call it with no arguments?}}
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// expected-error@-2{{call to 'bar' is ambiguous}}
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static_assert(is_same_v<decltype(&baz), long(*)()>);
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}
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