Dear contributor,

Our automatic CI has detected problems related to your patch(es). Please find some details below.

In bootstrap_check master-aarch64-check_bootstrap, after:
  | commit gcc-15-8933-ga264c270fde2
  | Author: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
  | Date:   Wed Mar 26 15:30:47 2025 +0100
  | 
  |     libstdc++: do not advertise full P2562R1 support
  |     
  |     P2562R1 ("constexpr Stable Sorting") adds constexpr to stable_sort,
  |     stable_partition and inplace_merge. However only the first is already
  |     implemented in libstdc++, so we shouldn't bump the feature-testing
  | ... 12 lines of the commit log omitted.

Produces 1 regression:
  | 
  | regressions.sum:
  | Running libstdc++:libstdc++-dg/conformance.exp ...
  | FAIL: 25_algorithms/stable_sort/constexpr.cc -std=gnu++26 (test for excess errors)

Used configuration :
 *CI config* tcwg_bootstrap_check master-aarch64-check_bootstrap
 *configure and test flags:* none, autodetected on aarch64-unknown-linux-gnu

We track this bug report under https://linaro.atlassian.net/browse/GNU-1550. Please let us know if you have a fix.

If you have any questions regarding this report, please ask on linaro-toolchain@lists.linaro.org mailing list.

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The information below contains the details of the failures, and the ways to reproduce a debug environment:

You can find the failure logs in
 * https://ci.linaro.org/job/tcwg_bootstrap_check--master-aarch64-check_bootstrap-build/1112/artifact/artifacts/
The full lists of regressions and improvements as well as configure and make commands are in
 * https://ci.linaro.org/job/tcwg_bootstrap_check--master-aarch64-check_bootstrap-build/1112/artifact/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * https://ci.linaro.org/job/tcwg_bootstrap_check--master-aarch64-check_bootstrap-build/1112/artifact/artifacts/sumfiles/xfails.xfail

Current build   : https://ci.linaro.org/job/tcwg_bootstrap_check--master-aarch64-check_bootstrap-build/1112/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_bootstrap_check--master-aarch64-check_bootstrap-build/1111/artifact/artifacts

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/a264c270fde292678893493fec0d0dd01ee5c4ec/tcwg_bootstrap_check/master-aarch64-check_bootstrap/reproduction_instructions.txt

Full commit : https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=a264c270fde292678893493fec0d0dd01ee5c4ec