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-16-3944-gc1e1691b95e
  | Author: Jakub Jelinek <jakub@redhat.com>
  | Date:   Thu Sep 18 07:44:54 2025 +0200
  | 
  |     libstdc++: Implement C++23 P2590R2 - Explicit lifetime management [PR106658]
  |     
  |     As I can't think of how the middle-end would treat
  |     __builtin_start_lifetime_as other than a blackbox and probably would
  |     need to be implemented as such inline asm in RTL, this patch
  | ... 31 lines of the commit log omitted.

Produces 29 regressions:
  | 
  | regressions.sum:
  | Running libstdc++:libstdc++-dg/conformance.exp ...
  | FAIL: 23_containers/inplace_vector/access/capacity.cc -std=gnu++26 (test for excess errors)
  | UNRESOLVED: 23_containers/inplace_vector/access/capacity.cc -std=gnu++26 compilation failed to produce executable
  | FAIL: 23_containers/inplace_vector/access/elem.cc -std=gnu++26 (test for excess errors)
  | UNRESOLVED: 23_containers/inplace_vector/access/elem.cc -std=gnu++26 compilation failed to produce executable
  | ... and 25 more

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-692. 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_bootstrap_check--master-aarch64-check_bootstrap-build/1360/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_bootstrap_check--master-aarch64-check_bootstrap-build/1360/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/1360/artifact/artifacts/sumfiles/xfails.xfail

Current build   : https://ci.linaro.org/job/tcwg_bootstrap_check--master-aarch64-check_bootstrap-build/1360/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_bootstrap_check--master-aarch64-check_bootstrap-build/1359/artifact/artifacts

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/c1e1691b95e65c53a2b9c25de70c56655215b905/tcwg_bootstrap_check/master-aarch64-check_bootstrap/reproduction_instructions.txt

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