forked from mirror/libcxx
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
89 lines
3.1 KiB
C++
89 lines
3.1 KiB
C++
// -*- C++ -*-
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// UNSUPPORTED: c++98, c++03, c++11, c++14
|
|
|
|
// <variant>
|
|
|
|
// template <class ...Types>
|
|
// constexpr bool
|
|
// operator==(variant<Types...> const&, variant<Types...> const&) noexcept;
|
|
//
|
|
// template <class ...Types>
|
|
// constexpr bool
|
|
// operator!=(variant<Types...> const&, variant<Types...> const&) noexcept;
|
|
//
|
|
// template <class ...Types>
|
|
// constexpr bool
|
|
// operator<(variant<Types...> const&, variant<Types...> const&) noexcept;
|
|
//
|
|
// template <class ...Types>
|
|
// constexpr bool
|
|
// operator>(variant<Types...> const&, variant<Types...> const&) noexcept;
|
|
//
|
|
// template <class ...Types>
|
|
// constexpr bool
|
|
// operator<=(variant<Types...> const&, variant<Types...> const&) noexcept;
|
|
//
|
|
// template <class ...Types>
|
|
// constexpr bool
|
|
// operator>=(variant<Types...> const&, variant<Types...> const&) noexcept;
|
|
|
|
#include <cassert>
|
|
#include <type_traits>
|
|
#include <utility>
|
|
#include <variant>
|
|
|
|
#include "test_macros.h"
|
|
|
|
|
|
struct MyBoolExplicit {
|
|
bool value;
|
|
constexpr explicit MyBoolExplicit(bool v) : value(v) {}
|
|
constexpr explicit operator bool() const noexcept { return value; }
|
|
};
|
|
|
|
struct ComparesToMyBoolExplicit {
|
|
int value = 0;
|
|
};
|
|
inline constexpr MyBoolExplicit operator==(const ComparesToMyBoolExplicit& LHS, const ComparesToMyBoolExplicit& RHS) noexcept {
|
|
return MyBoolExplicit(LHS.value == RHS.value);
|
|
}
|
|
inline constexpr MyBoolExplicit operator!=(const ComparesToMyBoolExplicit& LHS, const ComparesToMyBoolExplicit& RHS) noexcept {
|
|
return MyBoolExplicit(LHS.value != RHS.value);
|
|
}
|
|
inline constexpr MyBoolExplicit operator<(const ComparesToMyBoolExplicit& LHS, const ComparesToMyBoolExplicit& RHS) noexcept {
|
|
return MyBoolExplicit(LHS.value < RHS.value);
|
|
}
|
|
inline constexpr MyBoolExplicit operator<=(const ComparesToMyBoolExplicit& LHS, const ComparesToMyBoolExplicit& RHS) noexcept {
|
|
return MyBoolExplicit(LHS.value <= RHS.value);
|
|
}
|
|
inline constexpr MyBoolExplicit operator>(const ComparesToMyBoolExplicit& LHS, const ComparesToMyBoolExplicit& RHS) noexcept {
|
|
return MyBoolExplicit(LHS.value > RHS.value);
|
|
}
|
|
inline constexpr MyBoolExplicit operator>=(const ComparesToMyBoolExplicit& LHS, const ComparesToMyBoolExplicit& RHS) noexcept {
|
|
return MyBoolExplicit(LHS.value >= RHS.value);
|
|
}
|
|
|
|
|
|
int main() {
|
|
using V = std::variant<int, ComparesToMyBoolExplicit>;
|
|
V v1(42);
|
|
V v2(101);
|
|
// expected-error-re@variant:* 6 {{static_assert failed {{.*}}"the relational operator does not return a type which is implicitly convertible to bool"}}
|
|
// expected-error@variant:* 6 {{no viable conversion}}
|
|
(void)(v1 == v2); // expected-note {{here}}
|
|
(void)(v1 != v2); // expected-note {{here}}
|
|
(void)(v1 < v2); // expected-note {{here}}
|
|
(void)(v1 <= v2); // expected-note {{here}}
|
|
(void)(v1 > v2); // expected-note {{here}}
|
|
(void)(v1 >= v2); // expected-note {{here}}
|
|
}
|