On Thu, 2 Jul 2026 at 23:45, 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 cortex-m33 hard, after: | commit gcc-17-1905-g70e630b6d29b | Author: Jonathan Wakely jwakely@redhat.com | Date: Thu Jun 25 12:59:04 2026 +0100 | | libstdc++: Update feature test macros and tests for C++29 | | With r17-1595-g0c5c6249a2e9a7 G++ supports -std=c++29 so update our | feature test macro generation and testsuite to know about it. | | ... 19 lines of the commit log omitted.
Produces 5 regressions 5 fixes: | | regressions.sum: | Running libstdc++:libstdc++-dg/conformance.exp ... | FAIL: 19_diagnostics/stacktrace/entry.cc -std=gnu++29 execution test | FAIL: 19_diagnostics/stacktrace/output.cc -std=gnu++29 execution test | FAIL: 19_diagnostics/stacktrace/stacktrace.cc -std=gnu++29 execution test | FAIL: 27_io/print/2.cc -std=gnu++29 (test for excess errors) | ... and 1 more | | fixes.sum: | Running libstdc++:libstdc++-dg/conformance.exp ... | FAIL: 19_diagnostics/stacktrace/entry.cc -std=gnu++26 execution test | FAIL: 19_diagnostics/stacktrace/output.cc -std=gnu++26 execution test | FAIL: 19_diagnostics/stacktrace/stacktrace.cc -std=gnu++26 execution test | FAIL: 27_io/print/2.cc -std=gnu++26 (test for excess errors) | ... and 1 more
Used configuration : *CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb -march=armv8-m.main+dsp+fp -mtune=cortex-m33 -mfloat-abi=hard -mfpu=auto *configure and test flags:* --target arm-eabi --disable-multilib --with-mode=thumb --with-cpu=cortex-m33 --with-float=hard --target_board=-mthumb/-march=armv8-m.main+dsp+fp/-mtune=cortex-m33/-mfloat-abi=hard/-mfpu=auto qemu-cpu=cortex-m33
We track this bug report under https://linaro.atlassian.net/browse/GNU-1942. (Require Linaro login) Please let us know if you have a fix.
This isn't really a regression, it's because the tests switched from being run with -std=gnu++26 to -std=gnu++29, but they still FAIL the same way.
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 : http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-thumb_m33_ha... Reference build : http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-thumb_m33_ha...
Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sh...
Full commit : See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git