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// RUN: %clang_cc1 %s -std=c++23 -verify -Wfloat-equal
#include "Inputs/std-compare.h"
struct Foo {
float val;
bool operator==(const Foo &) const;
friend bool operator==(const Foo &, const Foo &);
friend bool operator==(Foo, Foo );
};
// Declare the defaulted comparison function as a member function.
bool Foo::operator==(const Foo &) const = default; // expected-warning {{comparing floating point with == or != is unsafe}} expected-note {{in defaulted equality comparison operator for 'Foo' first required here}}
// Declare the defaulted comparison function as a non-member function.
bool operator==(const Foo &, const Foo &) = default; // expected-warning {{comparing floating point with == or != is unsafe}} expected-note {{in defaulted equality comparison operator for 'Foo' first required here}}
// Declare the defaulted comparison function as a non-member function. Arguments are passed by value.
bool operator==(Foo, Foo) = default; // expected-warning {{comparing floating point with == or != is unsafe}} expected-note {{in defaulted equality comparison operator for 'Foo' first required here}}
namespace GH102588 {
struct A {
int i = 0;
constexpr operator int() const { return i; }
constexpr operator int&() { return ++i; }
};
struct B : A {
bool operator==(const B &) const = default;
};
constexpr bool f() {
B x;
return x == x;
}
static_assert(f());
struct ConstOnly {
std::strong_ordering operator<=>(const ConstOnly&) const;
std::strong_ordering operator<=>(ConstOnly&) = delete;
friend bool operator==(const ConstOnly&, const ConstOnly&);
friend bool operator==(ConstOnly&, ConstOnly&) = delete;
};
struct MutOnly {
std::strong_ordering operator<=>(const MutOnly&) const = delete;;
std::strong_ordering operator<=>(MutOnly&);
friend bool operator==(const MutOnly&, const MutOnly&) = delete;;
friend bool operator==(MutOnly&, MutOnly&);
};
struct ConstCheck : ConstOnly {
friend std::strong_ordering operator<=>(const ConstCheck&, const ConstCheck&) = default;
std::strong_ordering operator<=>(ConstCheck const& __restrict) const __restrict = default;
friend bool operator==(const ConstCheck&, const ConstCheck&) = default;
bool operator==(this const ConstCheck&, const ConstCheck&) = default;
};
// FIXME: Non-reference explicit object parameter are rejected
struct MutCheck : MutOnly {
friend bool operator==(MutCheck, MutCheck) = default;
// std::strong_ordering operator<=>(this MutCheck, MutCheck) = default;
friend std::strong_ordering operator<=>(MutCheck, MutCheck) = default;
// bool operator==(this MutCheck, MutCheck) = default;
};
}
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