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_notify@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 jwakely@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-toolchain@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
The full lists of regressions and improvements as well as configure and make commands are in
The list of [ignored] baseline and flaky failures are in
Current build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_ea... Reference build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_ea...
Instruction to reproduce the build : https://gitlab.com/Linaro/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/...
Full commit : See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git
Fixed at r16-2357-g152d4e3cf14fcf
On Fri, 18 Jul 2025 at 18:40, Jonathan Wakely jwakely@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_notify@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 jwakely@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-toolchain@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
The full lists of regressions and improvements as well as configure and make commands are in
The list of [ignored] baseline and flaky failures are in
Current build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_ea... Reference build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_ea...
Instruction to reproduce the build : https://gitlab.com/Linaro/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/...
Full commit : See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git
linaro-toolchain@lists.linaro.org
-
Jonathan Wakely