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Implement non-concepts fallback for coroutine_handle operator<=> #1249

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Merged
merged 2 commits into from
Sep 2, 2020
Merged

Implement non-concepts fallback for coroutine_handle operator<=> #1249

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Implement non-concepts fallback for coroutine_handle operator<=>
CaseyCarter Aug 31, 2020
e145b0b
Reorder feature-tests in `<experimental/generator>`
CaseyCarter Sep 2, 2020
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6 changes: 5 additions & 1 deletion stl/inc/coroutine
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Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,11 @@ _NODISCARD constexpr bool operator==(const coroutine_handle<> _Left, const corou

_NODISCARD constexpr strong_ordering operator<=>(
const coroutine_handle<> _Left, const coroutine_handle<> _Right) noexcept {
return compare_three_way()(_Left.address(), _Right.address());
#ifdef __cpp_lib_concepts
return compare_three_way{}(_Left.address(), _Right.address());
#else // ^^^ no workaround / workaround vvv
return _Left.address() <=> _Right.address();
#endif // __cpp_lib_concepts
}

template <class _Promise>
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