[Linaro-TCWG-CI] gcc-17-1246-g341ad729c2c: 2 regressions on arm

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-17-1246-g341ad729c2c
  | Author: Tomasz Kamiński <[email protected]>
  | Date:   Thu May 28 08:37:33 2026 +0200
  | 
  |     libstdc++: Add (generic_)display_string and (generic_)native_encoded_string to filesystem::path
  |     
  |     Furthermore string and generic_string method as marked as deprecated
  |     in C++26 mode.
  |     
  | ... 54 lines of the commit log omitted.

Produces 2 regressions:
  | 
  | regressions.sum:
  | Running libstdc++:libstdc++-dg/conformance.exp ...
  | FAIL: 27_io/filesystem/path/generic/display_native_string.cc -std=gnu++26 execution test
  | FAIL: 27_io/filesystem/path/native/display_native_string.cc -std=gnu++26 execution test

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-1938. (Require Linaro login) Please let us know if you have a fix.

If you have any questions regarding this report, please ask on [email protected] mailing list.

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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
 * http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_eabi-build/builds/10091/archive/artifacts/00-sumfiles/
The full lists of regressions and improvements as well as configure and make commands are in
 * http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_eabi-build/builds/10091/archive/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_eabi-build/builds/10091/archive/artifacts/sumfiles/xfails.xfail

Current build   : http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_eabi-build/builds/10091/archive/artifacts/
Reference build : http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_eabi-build/builds/10090/archive/artifacts/

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/341ad729c2c93b9f01854913b0404e4fc8958512/tcwg_gnu_embed_check_gcc/master-arm_v7a_softfp_eabi/reproduction_instructions.txt

Full commit : See in git+ssh://[email protected]/git/gcc.git