<mdspan>: Check preconditions of mdspan::operator[] clarified by LWG-3974
#4214
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CaseyCarter
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Nov 28, 2023
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Just a static_assert message nit, which I'll apply.
I believe the original implementation is conforming after LWG-3974, because the difference between
index-castandstatic_castcan't be observed without UB (precondition violation).
That was my determination as well when LWG suggested changing the resolution to use index-cast.
Clarify `static_assert` message.
StephanTLavavej
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Nov 28, 2023
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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 improving |
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Closes #4166.
I believe the original implementation is conforming after LWG-3974, because the difference between
index-castandstatic_castcan't be observed without UB (precondition violation). This PR intends to improve precondition checking.