48 lines
2.3 KiB
C++
48 lines
2.3 KiB
C++
// RUN: %clang_cc1 -std=c++20 -verify %s
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struct A {
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bool operator!=(const A&) const = default; // expected-warning {{explicitly defaulted equality comparison operator is implicitly deleted}}
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// expected-note@-1 {{defaulted 'operator!=' is implicitly deleted because there is no viable 'operator==' for 'A'}}
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};
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struct Q {};
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bool operator!=(Q, Q); // expected-note {{defaulted 'operator!=' is implicitly deleted because this non-rewritten comparison function would be the best match for the comparison}}
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struct B {
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operator Q() const;
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bool operator!=(const B&) const = default; // expected-warning {{explicitly defaulted equality comparison operator is implicitly deleted}}
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};
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struct R {};
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bool operator==(R, R);
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struct B2 {
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operator R() const;
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bool operator!=(const B2&) const = default; // OK! Converts to use rewritten R comparison.
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};
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struct C {
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operator int() const; // expected-note {{defaulted 'operator!=' is implicitly deleted because a builtin comparison function using this conversion would be the best match for the comparison}}
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bool operator!=(const C&) const = default; // expected-warning {{explicitly defaulted equality comparison operator is implicitly deleted}}
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};
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struct D {
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bool operator<(const D&) const = default; // expected-warning {{explicitly defaulted relational comparison operator is implicitly deleted}}
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// expected-note@-1 {{defaulted 'operator<' is implicitly deleted because there is no viable three-way comparison function for 'D'}}
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};
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bool operator<(Q, Q); // expected-note {{defaulted 'operator<' is implicitly deleted because this non-rewritten comparison function would be the best match for the comparison}}
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struct E {
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operator Q() const;
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bool operator<(const E&) const = default; // expected-warning {{explicitly defaulted relational comparison operator is implicitly deleted}}
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};
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int operator<=>(R, R);
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struct E2 {
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operator R() const;
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bool operator<(const E2&) const = default;
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};
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struct F {
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operator int() const; // expected-note {{defaulted 'operator<' is implicitly deleted because a builtin comparison function using this conversion would be the best match for the comparison}}
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bool operator<(const F&) const = default; // expected-warning {{explicitly defaulted relational comparison operator is implicitly deleted}}
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};
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