Dear contributor,

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

In  arm-eabi cortex-m33 hard, after:
  | commit gcc-16-6011-g23d71494fe0a
  | Author: Jason Merrill <jason@redhat.com>
  | Date:   Wed Dec 10 17:32:59 2025 +0800
  | 
  |     c++: clean up gcms from compile-std1.C
  |     
  |     I noticed that the .gcms from compile-std1.C were sticking around and
  |     confusing other tests; this patch enhances dg-module-cmi to understand
  |     <header> and adds the appropriate directives to the test.
  | ... 7 lines of the commit log omitted.

Produces 3 regressions:
  | 
  | regressions.sum:
  | Running g++:g++.dg/modules/modules.exp ...
  | FAIL: g++.dg/modules/compile-std1.C module-cmi <bits/stdc++.h> (gcm.cache/WORKSPACE/abe/builds/x86_64-pc-linux-gnu/arm-eabi/gcc-gcc.git~master-stage2/arm-eabi/libstdc++-v3/include/arm-eabi/bits/stdc++.h.gcm)
  | FAIL: g++.dg/modules/compile-std1.C module-cmi std (gcm.cache/std.gcm)
  | FAIL: g++.dg/modules/compile-std1.C module-cmi std.compat (gcm.cache/std.compat.gcm)

Used configuration :
 *CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb -march=armv8-m.main+dsp+fp -mtune=cortex-m33 -mfloat-abi=hard -mfpu=auto
 *configure and test flags:* --target arm-eabi --disable-multilib --with-mode=thumb --with-cpu=cortex-m33 --with-float=hard --target_board=-mthumb/-march=armv8-m.main+dsp+fp/-mtune=cortex-m33/-mfloat-abi=hard/-mfpu=auto qemu-cpu=cortex-m33

We track this bug report under https://linaro.atlassian.net/browse/GNU-1778. 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_embed_check_gcc--master-thumb_m33_hard_eabi-build/680/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_m33_hard_eabi-build/680/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_m33_hard_eabi-build/680/artifact/artifacts/sumfiles/xfails.xfail

Current build   : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m33_hard_eabi-build/680/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m33_hard_eabi-build/679/artifact/artifacts

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/23d71494fe0a6244b870db5a4f879b528903f52c/tcwg_gnu_embed_check_gcc/master-thumb_m33_hard_eabi/reproduction_instructions.txt

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