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c++: One more spaceship test.

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Jakub suggested adding a variant where we actually try to call the
implicitly deleted operator.

gcc/testsuite/ChangeLog:

	* g++.dg/cpp2a/spaceship-synth8a.C: New test.
This commit is contained in:
Jason Merrill 2021-10-06 17:12:02 -04:00
parent 929cb75e42
commit 6aab794614
1 changed files with 25 additions and 0 deletions
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gcc/testsuite/g++.dg/cpp2a/spaceship-synth8a.C Normal file
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// PR c++/94907
// { dg-do compile { target c++20 } }
namespace std { struct strong_ordering {
int _v;
constexpr strong_ordering (int v) :_v(v) {}
constexpr operator int (void) const { return _v; }
static const strong_ordering less;
static const strong_ordering equal;
static const strong_ordering greater;
};
constexpr strong_ordering strong_ordering::less = -1;
constexpr strong_ordering strong_ordering::equal = 0;
constexpr strong_ordering strong_ordering::greater = 1;
}
struct E;
struct D {
virtual std::strong_ordering operator<=>(const struct E&) const = 0;
};
struct E : D { // { dg-error "no match" }
std::strong_ordering operator<=>(const E&) const override = default; // { dg-message "default" }
};
auto x = E() <=> E(); // { dg-error "deleted" }