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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): 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. 2026-02-17 Jakub Jelinek <jakub@redhat.com> * src/c++23/std.cc.in (std::submdspan_canonicalize_slices, std::submdspan_extents): Remove exports. (std::canonical_slices, std::subextents): New exports.