<mdspan>: Construct mappings from extents_type rvalues when necessary
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… rvalue when necessary. N4964 [mdspan.mdspan.cons]/10.2 "direct-non-list-initializes map_ with extents_type(exts)" Found by libcxx std/containers/views/mdspan/mdspan/ctor.dh_span.pass.cpp.
CaseyCarter
approved these changes
Dec 5, 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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WG21-N4964 [mdspan.mdspan.cons]/10.2:
We were correctly passing
extents_typervalues up to the_Mdspan_mapping_baselayer, but that was incorrectly always copying.Test coverage will be provided by
std/containers/views/mdspan/mdspan/ctor.dh_span.pass.cppin the upcoming libcxx update that I'm working on.