28 lines
1.4 KiB
C++
28 lines
1.4 KiB
C++
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// RUN: %clang_cc1 -std=c++2a -verify %s
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struct Good1 {
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bool operator==(const Good1&) const = default;
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bool operator!=(const Good1&) const = default;
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};
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struct Good2 {
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friend bool operator==(const Good2&, const Good2&) = default;
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friend bool operator!=(const Good2&, const Good2&) = default;
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};
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enum Bool : bool {};
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struct Bad {
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bool &operator==(const Bad&) const = default; // expected-error {{return type for defaulted equality comparison operator must be 'bool', not 'bool &'}}
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const bool operator!=(const Bad&) const = default; // expected-error {{return type for defaulted equality comparison operator must be 'bool', not 'const bool'}}
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friend Bool operator==(const Bad&, const Bad&) = default; // expected-error {{return type for defaulted equality comparison operator must be 'bool', not 'Bool'}}
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friend int operator!=(const Bad&, const Bad&) = default; // expected-error {{return type for defaulted equality comparison operator must be 'bool', not 'int'}}
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};
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template<typename T> struct Ugly {
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T operator==(const Ugly&) const = default; // expected-error {{return type}}
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T operator!=(const Ugly&) const = default; // expected-error {{return type}}
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friend T operator==(const Ugly&, const Ugly&) = default; // expected-error {{return type}}
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friend T operator!=(const Ugly&, const Ugly&) = default; // expected-error {{return type}}
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};
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template struct Ugly<bool>;
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template struct Ugly<int>; // expected-note {{in instantiation of}}
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