On Tue, 17 Feb 2026, 07:48 Jakub Jelinek, <[email protected]> wrote: > On Mon, Feb 16, 2026 at 01:34:50PM +0100, Tomasz Kamiński wrote: > > This patch implements LWG 4491, addressing C++26 NB comments. > > > > libstdc++-v3/ChangeLog: > > > > * include/std/mdspan (std::submdspan_extents): Rename to... > > (std::subextents): Rename of submdspan_extents. > > (std::submdspan_canonicalize_slices): Rename to... > > (std::canonical_slices): > > * > testsuite/23_containers/mdspan/submdspan/submdspan_canonicalize_slices.cc: > > Move to... > > * testsuite/23_containers/mdspan/submdspan/canonical_slices.cc: > ...here. > > Updated calls to submdspan_canonicalize_slices. > > * > testsuite/23_containers/mdspan/submdspan/submdspan_canonicalize_slices_neg.cc: > > Move to... > > * > testsuite/23_containers/mdspan/submdspan/canonical_slices_neg.cc: ...here. > > Updated calls to submdspan_canonicalize_slices. > > * testsuite/23_containers/mdspan/submdspan/submdspan_extents.cc: > Move to... > > * testsuite/23_containers/mdspan/submdspan/subextents.cc: ...here. > > Qualified and renamed calls to submdspan_extents. > > * > testsuite/23_containers/mdspan/submdspan/submdspan_extents_neg.cc: Move > to... > > * testsuite/23_containers/mdspan/submdspan/subextents_neg.cc: > ...here. > > Qualified and renamed calls to submdspan_extents. > > This broke > +FAIL: g++.dg/modules/compile-std1.C -std=c++26 (test for excess errors) > +FAIL: g++.dg/modules/compile-std1.C module-cmi std (gcm.cache/std.gcm) > +FAIL: g++.dg/modules/compile-std1.C module-cmi std.compat > (gcm.cache/std.compat.gcm) > on all targets. > > The following patch fixes it, tested on x86_64-linux, ok for trunk? >
OK, thanks > 2026-02-17 Jakub Jelinek <[email protected]> > > * src/c++23/std.cc.in (std::submdspan_canonicalize_slices, > std::submdspan_extents): Remove exports. > (std::canonical_slices, std::subextents): New exports. > > --- libstdc++-v3/src/c++23/std.cc.in.jj 2026-01-29 21:56:30.963463807 +0100 > +++ libstdc++-v3/src/c++23/std.cc.in 2026-02-17 08:40:55.256669866 > +0100 > @@ -1915,8 +1915,8 @@ export namespace std > using std::full_extent_t; > using std::full_extent; > using std::submdspan_mapping_result; > - using std::submdspan_canonicalize_slices; > - using std::submdspan_extents; > + using std::canonical_slices; > + using std::subextents; > using std::submdspan; > #endif > } > > > Jakub > >
