[PATCH v2 0/5] Implement mdspan.

[Luc Grosheintz]

After this series I think we should have completed the C++23
part of mdspan.

I'm not sure about the last few steps:

   1. Can I create a commit that sets the official FTM to 202207L?
   2. Who and when creates the commit that updates the page with
   the supported features [1]?

[1]: https://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html

On 6/27/25 11:07, Luc Grosheintz wrote:
> This is the second iteration of this patch series and the first also
> sent to gcc-patches.
> 
> The individual patches can be restructured as desired.
> 
> The final patch is a proposal to strengthen some exception guarantees to
> make mdspan nothrow movable. The standard doesn't require this; but I
> felt it made sense to at least propose it.
> 
> Luc Grosheintz (5):
>    libstdc++: Check prerequisites of layout_*::operator().
>    libstdc++: Check prerequite of extents::extents.
>    libstdc++: Restructure mdspan tests to reuse IntLike.
>    libstdc++: Implement mdspan and tests.
>    libstdc++: Make mdspan nothrow movable.
> 
>   libstdc++-v3/include/std/mdspan               | 305 +++++++++
>   libstdc++-v3/src/c++23/std.cc.in              |   3 +-
>   .../23_containers/mdspan/class_mandate_neg.cc |  58 ++
>   .../mdspan/extents/class_mandates_neg.cc      |  31 +
>   .../mdspan/extents/custom_integer.cc          |  27 +-
>   .../23_containers/mdspan/extents/int_like.h   |  28 +
>   .../23_containers/mdspan/layout_like.h        |  63 ++
>   .../mdspan/layouts/class_mandate_neg.cc       |  26 +
>   .../testsuite/23_containers/mdspan/mdspan.cc  | 591 ++++++++++++++++++
>   9 files changed, 1105 insertions(+), 27 deletions(-)
>   create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/class_mandate_neg.cc
>   create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/extents/int_like.h
>   create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/layout_like.h
>   create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/mdspan.cc
>