Hi Jason,

On Thu, 12 Sept 2024 at 00:15, <ci_not...@linaro.org> wrote:
>
> Dear contributor, our automatic CI has detected problems related to your 
> patch(es).  Please find some details below.  If you have any questions, 
> please follow up on linaro-toolchain@lists.linaro.org mailing list, Libera's 
> #linaro-tcwg channel, or ping your favourite Linaro toolchain developer on 
> the usual project channel.
>
> We understand that it might be difficult to find the necessary logs or 
> reproduce the issue locally. If you can't get what you need from our CI 
> within minutes, let us know and we will be happy to help.
>
> We track this report status in https://linaro.atlassian.net/browse/GNU-1339 , 
> please let us know if you are looking at the problem and/or when you have a 
> fix.
>
> In  arm-eabi cortex-m7 hard after:
>
>   | commit gcc-15-3532-g7cebc6384a0a
>   | Author: Jason Merrill <ja...@redhat.com>
>   | Date:   Fri Sep 6 15:28:53 2024 -0400
>   |
>   |     c++: exception spec and stdlib specialization
>   |
>   |     We were silently accepting the pr65923.C specialization of std::swap 
> with
>   |     the wrong exception specification; it should be declared noexcept.  
> Let's
>   |     limit ignoring mismatch with system headers to extern "C" functions 
> so we
>   |     get a diagnostic for the C++ library.
>   |
>   | ... 18 lines of the commit log omitted.
>
> FAIL: 6 regressions: 6 improvements
>
> regressions.sum:
>                 === g++ tests ===
>
> Running g++:g++.dg/dg.exp ...
> FAIL: g++.dg/cpp1z/aligned-new3.C -std=gnu++17 (test for excess errors)
> UNRESOLVED: g++.dg/cpp1z/aligned-new3.C -std=gnu++17 compilation failed to 
> produce executable
> FAIL: g++.dg/cpp1z/aligned-new3.C -std=gnu++20 (test for excess errors)
> UNRESOLVED: g++.dg/cpp1z/aligned-new3.C -std=gnu++20 compilation failed to 
> produce executable
> FAIL: g++.dg/cpp1z/aligned-new3.C -std=gnu++26 (test for excess errors)
> UNRESOLVED: g++.dg/cpp1z/aligned-new3.C -std=gnu++26 compilation failed to 
> produce executable
>
>
> improvements.sum:
>                 === g++ tests ===
>
> Running g++:g++.dg/dg.exp ...
> UNRESOLVED: g++.dg/cpp1z/aligned-new3.C -std=c++20 compilation failed to 
> produce executable
> UNRESOLVED: g++.dg/cpp1z/aligned-new3.C -std=c++26 compilation failed to 
> produce executable
> FAIL: g++.dg/cpp1z/aligned-new3.C -std=c++26 (test for excess errors)
> UNRESOLVED: g++.dg/cpp1z/aligned-new3.C -std=c++17 compilation failed to 
> produce executable
> FAIL: g++.dg/cpp1z/aligned-new3.C -std=c++20 (test for excess errors)
> FAIL: g++.dg/cpp1z/aligned-new3.C -std=c++17 (test for excess errors)

This is not a regression, these tests used to fail with -std=c++XX and
now they still fail with -std=gnuXX.
I guess this is the effect of adding 'dg-options ""' ?

And... the reason they fail to produce an executable is a recent patch
of mine in the linker, which should now be fixed.

Thanks,

Christophe



>
>
> 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_eabi-build/534/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_eabi-build/534/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_eabi-build/534/artifact/artifacts/sumfiles/xfails.xfail
>
> The configuration of this build is:
> CI config tcwg_gnu_embed_check_gcc arm-eabi -mthumb -march=armv7e-m+fp.dp 
> -mtune=cortex-m7 -mfloat-abi=hard -mfpu=auto
>
> -----------------8<--------------------------8<--------------------------8<--------------------------
> The information below can be used to reproduce a debug environment:
>
> Current build   : 
> https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m7_eabi-build/534/artifact/artifacts
> Reference build : 
> https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m7_eabi-build/533/artifact/artifacts
>
> Reproduce last good and first bad builds: 
> https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/7cebc6384a0ad63d444029472a8ed1afe965bbbc/tcwg_gnu_embed_check_gcc/master-thumb_m7_eabi/reproduction_instructions.txt
>
> Full commit : 
> https://github.com/gcc-mirror/gcc/commit/7cebc6384a0ad63d444029472a8ed1afe965bbbc
>
> List of configurations that regressed due to this commit :
> * tcwg_gnu_embed_check_gcc
> ** master-thumb_m7_eabi
> *** FAIL: 6 regressions: 6 improvements
> *** 
> https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/7cebc6384a0ad63d444029472a8ed1afe965bbbc/tcwg_gnu_embed_check_gcc/master-thumb_m7_eabi/details.txt
> *** 
> https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m7_eabi-build/534/artifact/artifacts
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