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