On Tue, 9 Sept 2025 at 11:27, Luc Grosheintz via Gcc-regression <[email protected]> wrote: > > Jonathan Wakely already fixed it. Please ignore the rest.
Thanks for letting us know. Christophe > > On 9/9/25 11:16 AM, Luc Grosheintz wrote: > > I'd like to apologize for causing these regressions. Below > > I've copied out the relevant parts from the logs. To me it > > looks like _Xv is a reserved identifier. > > > > I'll prepare a patch to fix the issue. > > > > On 9/9/25 6:54 AM, [email protected] wrote: > >> Dear contributor, > >> > >> Our automatic CI has detected problems related to your patch(es). > >> Please find some details below. > >> > >> In arm-eabi cortex-m3 softfp, after: > >> | commit gcc-16-3649-gc440b585ba3 > >> | Author: Luc Grosheintz <[email protected]> > >> | Date: Thu Sep 4 14:20:28 2025 +0200 > >> | > >> | libstdc++: Implement constant_wrapper, cw from P2781R9. > >> | > >> | This is a partial implementation of P2781R9. It adds std::cw and > >> | std::constant_wrapper, but doesn't modify > >> __integral_constant_like for > >> | span/mdspan. > >> | ... 25 lines of the commit log omitted. > >> > >> Produces 4 regressions: > >> | > >> | regressions.sum: > >> | Running g++:g++.old-deja/old-deja.exp ... > >> | FAIL: g++.old-deja/g++.robertl/eb39.C -std=c++26 (test for excess > >> errors) > > > > Code: > > 4651: template<_CwFixedValue _Xv, typename> > > 4652: struct constant_wrapper : _CwOperators > > 4653: { > > > > > > Compiler error: > > /home/tcwg-buildslave/workspace/tcwg_gnu_0/abe/builds/x86_64-pc-linux- > > gnu/arm-eabi/gcc-gcc.git~master-stage2/arm-eabi/libstdc++-v3/include/ > > type_traits:4651:26: error: expected '>' before numeric constant > > > > My guess is that _Xv is a reserved name. It's not on the list > > of common bad identifiers [1], but it's the only guess I have. > > > > [1]: https://gcc.gnu.org/onlinedocs/libstdc++/manual/source_code_style.html > > > >> | FAIL: g++.old-deja/g++.robertl/eb54.C -std=c++26 (test for excess > >> errors) > > > > Same as above. > > > >> | UNRESOLVED: g++.old-deja/g++.robertl/eb54.C -std=c++26 > >> compilation failed to produce executable > > > > Same as above. > > > >> | FAIL: g++.old-deja/g++.warn/iomanip.C -std=gnu++26 (test for > >> excess errors) > > > > Same as above. > > > >> Used configuration : > >> *CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb -march=armv7-m > >> -mtune=cortex-m3 -mfloat-abi=softfp -mfpu=auto > >> *configure and test flags:* --target arm-eabi --disable-multilib -- > >> with-mode=thumb --with-cpu=cortex-m3 --with-float=softfp -- > >> target_board=-mthumb/-march=armv7-m/-mtune=cortex-m3/-mfloat- > >> abi=softfp/-mfpu=auto qemu_cpu=cortex-m3 > >> > >> We track this bug report under https://linaro.atlassian.net/browse/ > >> GNU-1676. 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_embed_check_gcc--master- > >> thumb_m3_softfp_eabi-build/518/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_m3_softfp_eabi-build/518/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_m3_softfp_eabi-build/518/artifact/artifacts/sumfiles/xfails.xfail > >> > >> Current build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc-- > >> master-thumb_m3_softfp_eabi-build/518/artifact/artifacts > >> Reference build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc-- > >> master-thumb_m3_softfp_eabi-build/517/artifact/artifacts > >> > >> Instruction to reproduce the build : https://gitlab.com/LinaroLtd/ > >> tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/ > >> c440b585ba374b6348ef223e4891a717a1f6660c/tcwg_gnu_embed_check_gcc/ > >> master-thumb_m3_softfp_eabi/reproduction_instructions.txt > >> > >> Full commit : See in git+ssh://[email protected]/git/gcc.git > > >
