RE: [Linaro-TCWG-CI] gcc-16-6913-g304d08fea9e6: 1 regression on arm

Prathamesh Kulkarni via Gcc-regression <[email protected]>
Newsgroups gmane.comp.gcc.regression,gmane.linux.linaro.toolchain
Message-ID <DM4PR12MB5199DA659DD8C0F27C6D9F31CE9CA@DM4PR12MB5199.namprd12.prod.outlook.com>
Hi,
Thanks for the report. I have posted patch to fix the issue:
https://gcc.gnu.org/pipermail/gcc-patches/2026-January/707277.html
Can you please check if the above patch fixes the issue at your end ?

Thanks,
Prathamesh
> -----Original Message-----
> From: [email protected] <[email protected]>
> Sent: 23 January 2026 13:39
> To: Prathamesh Kulkarni <[email protected]>
> Cc: [email protected]; [email protected]
> Subject: [Linaro-TCWG-CI] gcc-16-6913-g304d08fea9e6: 1 regression on
> arm
> 
> External email: Use caution opening links or attachments
> 
> 
> Dear contributor,
> 
> Our automatic CI has detected problems related to your patch(es).
> Please find some details below.
> 
> In  master-arm, after:
>   | commit gcc-16-6913-g304d08fea9e6
>   | Author: Matthew Malcolmson <[email protected]>
>   | Date:   Tue Jan 20 03:54:51 2026 +0000
>   |
>   |     libgomp: Ensure memory sync after performing tasks
>   |
>   |     As described in PR 122356 there is a theoretical bug around
> not
>   |     "publishing" user data written in a task when that task has
> been
>   |     executed by a thread after entry to a barrier.
>   | ... 89 lines of the commit log omitted.
> 
> Produces 1 regression:
>   |
>   | regressions.sum:
>   | Running libgomp:libgomp.c/c.exp ...
>   | FAIL: libgomp.c/pr122356.c execution test
> 
> Used configuration :
>  *CI config* tcwg_gnu_cross_check_gcc master-arm  *configure and test
> flags:* --target arm-linux-gnueabihf
> 
> We track this bug report under
> https://linaro.atlassian.net/browse/GNU-1822. Please let us know if
> you have a fix.
> 
> If you have any questions regarding this report, please ask on linaro-
> [email protected] 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_cross_check_gcc--master-arm-
> build/2581/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-arm-
> build/2581/artifact/artifacts/notify/
> The list of [ignored] baseline and flaky failures are in
>  * https://ci.linaro.org/job/tcwg_gnu_cross_check_gcc--master-arm-
> build/2581/artifact/artifacts/sumfiles/xfails.xfail
> 
> Current build   : https://ci.linaro.org/job/tcwg_gnu_cross_check_gcc--
> master-arm-build/2581/artifact/artifacts
> Reference build : https://ci.linaro.org/job/tcwg_gnu_cross_check_gcc--
> master-arm-build/2580/artifact/artifacts
> 
> Instruction to reproduce the build :
> https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-
> /raw/master/gcc/sha1/304d08fea9e68c5b4806532816b58d33a15a917d/tcwg_gnu
> _cross_check_gcc/master-arm/reproduction_instructions.txt
> 
> Full commit : See in git+ssh://[email protected]/git/gcc.git
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