Re: [Linaro-TCWG-CI] gcc-16-2334-g9e330977385: 2 regressions on arm

[Jonathan Wakely via Gcc-regression]

Fixed at  r16-2357-g152d4e3cf14fcf

On Fri, 18 Jul 2025 at 18:40, Jonathan Wakely <jwak...@redhat.com> wrote:
>
> Tomasz,
>
> The new  __any_input_iterator type should only be declared for C++20
> and higher, so guarded by __cpp_lib_concepts
>
> Just checking __cpp_concepts isn't enough, because that's true for
> -std=c++17 -fconcepts but std::input_iterator isn't defined in that
> case.
>
>
> On Fri, 18 Jul 2025 at 17:18, <ci_not...@linaro.org> wrote:
> >
> > Dear contributor,
> >
> > Our automatic CI has detected problems related to your patch(es). Please 
> > find some details below.
> >
> > In  arm-eabi v7-a softfp, after:
> >   | commit gcc-16-2334-g9e330977385
> >   | Author: Jonathan Wakely <jwak...@redhat.com>
> >   | Date:   Thu Jun 5 12:05:19 2025 +0100
> >   |
> >   |     libstdc++: Add std::inplace_vector for C++26 (P0843R14) [PR119137]
> >   |
> >   |     Implement std::inplace_vector as specified in P0843R14, without 
> > follow
> >   |     up papers, in particular P3074R7 (trivial unions). In consequence
> >   |     inplace_vector<T, N> can be used inside constant evaluations only
> >   | ... 62 lines of the commit log omitted.
> >
> > Produces 2 regressions:
> >   |
> >   | regressions.sum:
> >   | Running g++:g++.dg/dg.exp ...
> >   | FAIL: g++.dg/concepts/expression.C -std=gnu++17 (test for excess errors)
> >   | UNRESOLVED: g++.dg/concepts/expression.C -std=gnu++17 compilation 
> > failed to produce executable
> >
> > Used configuration :
> >  *CI config* tcwg_gnu_embed_check_gcc arm-eabi -marm -march=armv7-a 
> > -mfpu=vfpv3-d16 -mfloat-abi=softfp
> >  *configure and test flags:* --target arm-eabi --disable-multilib 
> > --with-mode=arm --with-arch=armv7-a --with-fpu=vfpv3-d16 
> > --with-float=softfp 
> > --target_board=-marm/-march=armv7-a/-mfpu=vfpv3-d16/-mfloat-abi=softfp 
> > qemu_cpu=cortex-a9
> >
> > We track this bug report under 
> > https://linaro.atlassian.net/browse/GNU-1636. Please let us know if you 
> > have a fix.
> >
> > If you have any questions regarding this report, please ask on 
> > linaro-toolch...@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-arm_v7a_softfp_eabi-build/895/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-arm_v7a_softfp_eabi-build/895/artifact/artifacts/notify/
> > The list of [ignored] baseline and flaky failures are in
> >  * 
> > https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_eabi-build/895/artifact/artifacts/sumfiles/xfails.xfail
> >
> > Current build   : 
> > https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_eabi-build/895/artifact/artifacts
> > Reference build : 
> > https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_eabi-build/894/artifact/artifacts
> >
> > Instruction to reproduce the build : 
> > https://gitlab.com/Linaro/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/9e3309773855d3639fdb9a7a7f7176612f16cd28/tcwg_gnu_embed_check_gcc/master-arm_v7a_softfp_eabi/reproduction_instructions.txt
> >
> > Full commit : See in git+ssh://linar...@gcc.gnu.org/git/gcc.git