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