1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
| // RUN: %clang_cc1 -std=c++2a -verify %s
struct Good {
bool operator<(const Good&) const = default;
bool operator>(const Good&) const = default;
friend bool operator<=(const Good&, const Good&) = default;
friend bool operator>=(const Good&, const Good&) = default;
};
enum Bool : bool {};
struct Bad {
bool &operator<(const Bad&) const = default; // expected-error {{return type for defaulted relational comparison operator must be 'bool', not 'bool &'}}
const bool operator>(const Bad&) const = default; // expected-error {{return type for defaulted relational comparison operator must be 'bool', not 'const bool'}}
friend Bool operator<=(const Bad&, const Bad&) = default; // expected-error {{return type for defaulted relational comparison operator must be 'bool', not 'Bool'}}
friend int operator>=(const Bad&, const Bad&) = default; // expected-error {{return type for defaulted relational comparison operator must be 'bool', not 'int'}}
};
template<typename T> struct Ugly {
T operator<(const Ugly&) const = default; // expected-error {{return type}}
T operator>(const Ugly&) const = default; // expected-error {{return type}}
friend T operator<=(const Ugly&, const Ugly&) = default; // expected-error {{return type}}
friend T operator>=(const Ugly&, const Ugly&) = default; // expected-error {{return type}}
};
template struct Ugly<bool>;
template struct Ugly<int>; // expected-note {{in instantiation of}}
|