[Linaro-TCWG-CI] gcc-16-7292-g3f790555048: 2 regressions on aarch64

[ci_notify@linaro.org]

Dear contributor,

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

In  master-aarch64, after:
  | commit gcc-16-7292-g3f790555048
  | Author: Nathan Myers <ncm@cantrip.org>
  | Date:   Mon Sep 22 23:52:52 2025 -0400
  | 
  |     libstdc++: container erasure overloads (P2077) [PR117404]
  |     
  |     Remaining to do:
  |      * Add new declarations in debug headers too.
  |     
  | ... 48 lines of the commit log omitted.

Produces 2 regressions:
  | 
  | regressions.sum:
  | Running g++:g++.dg/dg.exp ...
  | FAIL: g++.dg/concepts/expression.C -std=gnu++17 (test for excess errors)
  | UNRESOLVED: g++.dg/concepts/expression.C -std=gnu++17 compilation failed to produce executable

Used configuration :
 *CI config* tcwg_gnu_cross_check_gcc master-aarch64
 *configure and test flags:* --target aarch64-linux-gnu 

We track this bug report under https://linaro.atlassian.net/browse/GNU-1831. 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 *.log.1.xz files in
 * https://ci.linaro.org/job/tcwg_gnu_cross_check_gcc--master-aarch64-build/2576/artifact/artifacts/00-sumfiles/
The full lists of regressions and improvements as well as configure and make commands are in
 * https://ci.linaro.org/job/tcwg_gnu_cross_check_gcc--master-aarch64-build/2576/artifact/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * https://ci.linaro.org/job/tcwg_gnu_cross_check_gcc--master-aarch64-build/2576/artifact/artifacts/sumfiles/xfails.xfail

Current build   : https://ci.linaro.org/job/tcwg_gnu_cross_check_gcc--master-aarch64-build/2576/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_gnu_cross_check_gcc--master-aarch64-build/2575/artifact/artifacts

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/3f7905550483408a2c4c5096a1adc8d7e863eb12/tcwg_gnu_cross_check_gcc/master-aarch64/reproduction_instructions.txt

Full commit : See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git