This patch series replaces: https://gcc.gnu.org/pipermail/libstdc++/2025-June/062207.html
Addresses the review comments and improves commit messages. Most notably the unnecessary patch to "strength" exception guarantees has been removed (and tests moved into the mdspan commit). The outstanding tasks for C++23 mdspan are: - Update cxxapi-data.csv, - Update C++23 status page. IIUC, the cxxapi-data.csv can be updated separately in bulk for all of C++23 mdspan and I can take care of it in a follow up patch. I'm not entirely sure when and by whom the status page is updated. Luc Grosheintz (5): libstdc++: Check prerequisites of layout_*::operator(). libstdc++: Check prerequisite of extents::extents. libstdc++: Restructure mdspan tests to reuse IntLike. libstdc++: Implement __mdspan::__size. libstdc++: Implement mdspan and tests [PR107761]. libstdc++-v3/include/std/mdspan | 314 ++++++++- libstdc++-v3/src/c++23/std.cc.in | 3 +- .../23_containers/mdspan/class_mandate_neg.cc | 41 ++ .../mdspan/extents/class_mandates_neg.cc | 2 + .../mdspan/extents/custom_integer.cc | 27 +- .../mdspan/extents/extents_mismatch_neg.cc | 35 + .../23_containers/mdspan/extents/int_like.h | 28 + .../23_containers/mdspan/layout_like.h | 80 +++ .../mdspan/layouts/debug/out_of_bounds_neg.cc | 30 + .../testsuite/23_containers/mdspan/mdspan.cc | 603 ++++++++++++++++++ .../23_containers/mdspan/out_of_bounds_neg.cc | 24 + 11 files changed, 1156 insertions(+), 31 deletions(-) create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/class_mandate_neg.cc create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/extents/extents_mismatch_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/layouts/debug/out_of_bounds_neg.cc create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/mdspan.cc create mode 100644 libstdc++-v3/testsuite/23_containers/mdspan/out_of_bounds_neg.cc -- 2.49.0
