Commit: See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git
gcc patch https://patchwork.sourceware.org/patch/146209
Author: Arsen Arsenović <aarsenovic@baylibre.com>
Date:   Sat Oct 17 14:50:21 2026 +0200

    [PATCH v4 1/2] gcc: backport std::{optional, expected} from libstdc++ into C++14
    
    This patch adds an implementation of std::optional and std::expected
    compatible with C++14.
    
... 390 lines of the commit log omitted.
... applied on top of baseline commit:
c7a1a2e21c9 testsuite: Fix regexps in src-loc-1_a.H and src-loc-1_c.C to match on hpux

* tcwg_simplebootstrap_build
** master-aarch64-bootstrap
*** Success
*** https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/b42e58b7d8216456e6cb053874eac777c2b578dc/tcwg_simplebootstrap_build/master-aarch64-bootstrap/details.txt
*** http://54.172.246.49:9090/jobs/tcwg_simplebootstrap_build--master-aarch64-bootstrap-precommit/builds/13645/archive/artifacts/

Latest data: https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/b42e58b7d8216456e6cb053874eac777c2b578dc/jira/yaml