<ranges>: Strengthen exception specification for _Defaultabox
#3762
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@achabense is correct - we typically don't bother with "strengthened" comments for things that don't appear in the Standard. (For things that directly correspond to exposition-only functions, I think sometimes we do, but I forget specific examples.) |
StephanTLavavej
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enhancement
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There are also a lot of |
StephanTLavavej
approved these changes
Jun 12, 2023
CaseyCarter
approved these changes
Jun 12, 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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One non-defaulted move constructor for
_Defaultaboxis currently nevernoexcept, which is probably a bug.So I decided not to add// strengthenedto that move constructor. Some similar constructors are made conditionallynoexcept, and I think// strengthenedis suitable for them._Defaultaboxis used forjoin_view::_Iteratorandlazy_split_view, while the standard wording usesoptionalandnon-propagating-cacherespectively. And thus I'm afraid that the exception specifications are not yet strong enough forlazy_split_view. But further strengthening seems dangerous.