Implement LWG-3724: decay-copy should be constrained - #2903
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Stephan T. Lavavej (StephanTLavavej) merged 5 commits intoJul 28, 2022
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Stephan T. Lavavej (StephanTLavavej) merged 5 commits into
Stephan T. Lavavej (StephanTLavavej) merged 5 commits into
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Casey Carter (CaseyCarter)
suggested changes
Jul 25, 2022
| unsigned int size_ = 0u; | ||
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| weird_string_view() = default; | ||
| explicit weird_string_view(const weird_string_view&) = default; |
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copy_constructible requires implicit copy construction via convertible_to<const T&, T>, so this is a move-only view. (No change requested.)
Casey Carter (CaseyCarter)
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Jul 26, 2022
Stephan T. Lavavej (StephanTLavavej)
approved these changes
Jul 26, 2022
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I'm mirroring this to the MSVC-internal repo - please notify me if any further changes are pushed. |
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Thanks for implementing so many LWG issue resolutions and improving conformance! 😻 😻 😻 😻 |
Igor Zhukov (fsb4000)
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Towards #2872.
Only one case in the
operator()of_All_fn(the type ofviews::all) needs additional constraints. MSVC STL has already constrained it withconstructible_from, but sometimesconstructible_fromseems still insufficient.I'm not sure whether the difference between
constructible_fromandconvertible_tois observable outside of IFNDR, or whetherweird_string_viewin the test file actually modelsview.