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Add operator<=> overload for zero-sized arrays

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This commit is contained in:
Peter Dimov
2025-01-27 03:59:32 +02:00
parent 329e59454f
commit 68db6ebd2d
2 changed files with 9 additions and 2 deletions
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7
include/boost/array.hpp
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@ -396,6 +396,13 @@ namespace boost {
return 0 <=> 0; // std::strong_ordering::equal return 0 <=> 0; // std::strong_ordering::equal
} }
template<class T>
constexpr auto operator<=> (const array<T,0>& x, const array<T,0>& y)
-> decltype( 0 <=> 0 )
{
return 0 <=> 0; // std::strong_ordering::equal
}
#endif #endif
// undocumented and obsolete // undocumented and obsolete

4
test/array_thw_test.cpp
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@ -77,11 +77,11 @@ template<class T, std::size_t N> void test()
int main() int main()
{ {
// test<int, 0>(); test<int, 0>();
test<int, 1>(); test<int, 1>();
test<int, 7>(); test<int, 7>();
// test<float, 0>(); test<float, 0>();
test<float, 1>(); test<float, 1>();
test<float, 7>(); test<float, 7>();