LWG-3850: views::as_const on empty_view<T> should return empty_view<const T>#3423
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StephanTLavavej merged 4 commits intomicrosoft:mainfrom Feb 14, 2023
Merged
LWG-3850: views::as_const on empty_view<T> should return empty_view<const T>#3423StephanTLavavej merged 4 commits intomicrosoft:mainfrom
views::as_const on empty_view<T> should return empty_view<const T>#3423StephanTLavavej merged 4 commits intomicrosoft:mainfrom
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CaseyCarter
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Feb 12, 2023
StephanTLavavej
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Feb 12, 2023
| const same_as<iterator_t<R>> auto i = r.begin(); | ||
| if (!is_empty) { | ||
| // (static analyzer doesn't realize that `i == nullptr` implies `is_empty`) | ||
| #pragma warning(suppress : 6011) // Dereferencing NULL pointer 'i' |
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No change requested: We avoid suppress in stl/inc (as it sometimes has issues with templates and/or modules, whereas push/disable/pop is reliable) but it's fine in stl/src and test code.
strega-nil-ms
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Feb 13, 2023
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I was concerned about empty_view<int&> being wrong, but it turns out that empty_view<reference-type> is invalid.
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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 helping the list of remaining LWG issues get closer to empty! 😹 📉 🎉 |
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Closes #3418.