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TheRock/compiler/amd-llvm/clang/test/CXX/class/class.compare/class.spaceship/p3.cpp
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2026-09-02 16:34:47 -07:00

40 lines
1.6 KiB
C++

// RUN: %clang_cc1 -std=c++2a -verify %s
namespace std {
struct strong_ordering {
int n;
constexpr operator int() const { return n; }
static const strong_ordering less, equal, greater;
};
constexpr strong_ordering strong_ordering::less{-1}, strong_ordering::equal{0}, strong_ordering::greater{1};
}
struct A {
int a, b[3], c;
std::strong_ordering operator<=>(const A&) const = default;
};
static_assert(A{1, 2, 3, 4, 5} <= A{1, 2, 3, 4, 5});
static_assert(A{1, 2, 3, 4, 5} <= A{0, 20, 3, 4, 5}); // expected-error {{failed}}
static_assert(A{1, 2, 3, 4, 5} <= A{1, 0, 30, 4, 5}); // expected-error {{failed}}
static_assert(A{1, 2, 3, 4, 5} <= A{1, 2, 0, 40, 5}); // expected-error {{failed}}
static_assert(A{1, 2, 3, 4, 5} <= A{1, 2, 3, 0, 50}); // expected-error {{failed}}
static_assert(A{1, 2, 3, 4, 5} <= A{1, 2, 3, 4, 0}); // expected-error {{failed}}
struct reverse_compare {
int n;
constexpr explicit reverse_compare(std::strong_ordering o) : n(-o.n) {}
constexpr operator int() const { return n; }
};
struct B {
int a, b[3], c;
friend reverse_compare operator<=>(const B&, const B&) = default;
};
static_assert(B{1, 2, 3, 4, 5} >= B{1, 2, 3, 4, 5});
static_assert(B{1, 2, 3, 4, 5} >= B{0, 20, 3, 4, 5}); // expected-error {{failed}}
static_assert(B{1, 2, 3, 4, 5} >= B{1, 0, 30, 4, 5}); // expected-error {{failed}}
static_assert(B{1, 2, 3, 4, 5} >= B{1, 2, 0, 40, 5}); // expected-error {{failed}}
static_assert(B{1, 2, 3, 4, 5} >= B{1, 2, 3, 0, 50}); // expected-error {{failed}}
static_assert(B{1, 2, 3, 4, 5} >= B{1, 2, 3, 4, 0}); // expected-error {{failed}}