Dear contributor,

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

In  arm-eabi cortex-m7 hard, after:
  | commit gcc-16-5988-g49c4b7328379
  | Author: Nathaniel Shead <nathanieloshead@gmail.com>
  | Date:   Tue Dec 9 23:33:41 2025 +1100
  | 
  |     Revert "c++: Non-inline temploid friends should still be COMDAT [PR122819]"
  |     
  |     This reverts commit cf22e30f0cfae65dd012966cab657583e2be667e.

Produces 8 regressions 3741 fixes:
  | 
  | regressions.sum:
  | Running libstdc++:libstdc++-dg/conformance.exp ...
  | FAIL: 19_diagnostics/stacktrace/output.cc -std=gnu++23 execution test
  | FAIL: 19_diagnostics/stacktrace/output.cc -std=gnu++26 execution test
  | FAIL: 23_containers/deque/modifiers/insert/insert_range.cc -std=gnu++26 (test for excess errors)
  | UNRESOLVED: 23_containers/deque/modifiers/insert/insert_range.cc -std=gnu++26 compilation failed to produce executable
  | ... and 4 more
  | 
  | fixes.sum:
  | Running g++:g++.dg/dg.exp ...
  | UNRESOLVED: g++.dg/contracts/contracts-access1.C compilation failed to produce executable
  | FAIL: g++.dg/contracts/contracts-access1.C (test for excess errors)
  | FAIL: g++.dg/contracts/contracts-config1.C (test for excess errors)
  | UNRESOLVED: g++.dg/contracts/contracts-config1.C compilation failed to produce executable
  | ... and 3741 more

Used configuration :
 *CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb -march=armv7e-m+fp.dp -mtune=cortex-m7 -mfloat-abi=hard -mfpu=auto
 *configure and test flags:* --target arm-eabi --disable-multilib --with-mode=thumb --with-cpu=cortex-m7 --with-float=hard --target_board=-mthumb/-march=armv7e-m+fp.dp/-mtune=cortex-m7/-mfloat-abi=hard/-mfpu=auto qemu_cpu=cortex-m7

We track this bug report under https://linaro.atlassian.net/browse/GNU-1821. 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.

-----------------8<--------------------------8<--------------------------8<--------------------------

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_embed_check_gcc--master-thumb_m7_hard_eabi-build/622/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_embed_check_gcc--master-thumb_m7_hard_eabi-build/622/artifact/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m7_hard_eabi-build/622/artifact/artifacts/sumfiles/xfails.xfail

Current build   : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m7_hard_eabi-build/622/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m7_hard_eabi-build/621/artifact/artifacts

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/49c4b7328379df066a414535166916bb017033cf/tcwg_gnu_embed_check_gcc/master-thumb_m7_hard_eabi/reproduction_instructions.txt

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