Dear contributor,

Our automatic CI has detected problems related to your patch(es). Please find some details below.

In  armv8l-unknown-linux-gnueabihf native, after:
  | gcc patch https://patchwork.sourceware.org/patch/138220
  | Author: Yuao Ma <c8ef@outlook.com>
  | Date:   Wed Jul 1 22:36:33 2026 +0800
  | 
  |     [PATCH] libstdc++: implement LWG3662 basic_string::append/assign(NTBS, pos, n) suboptimal
  |     
  |     This patch implements LWG3662 for both ABIs of std::string.
  |     
  |     libstdc++-v3/ChangeLog:
  | ... 7 lines of the commit log omitted.
  | ... applied on top of baseline commit:
  | 21ed8a7be17 build: Simplify in-tree-gld version checks

Produces Failure:
  | Results changed to
  | # reset_artifacts:
  | -10
  | # true:
  | 0
  | # build_abe gcc:
  | # FAILED
  | # First few build errors in logs:
  | # 00:09:53 /home/tcwg-build/workspace/tcwg_gnu_2/abe/builds/armv8l-unknown-linux-gnueabihf/armv8l-unknown-linux-gnueabihf/gcc-gcc.git~master-stage2/armv8l-unknown-linux-gnueabihf/libstdc++-v3/include/bits/cow_string.h:1360:32: error: ‘__sv_type’ was not declared in this scope
  | # 00:09:53 /home/tcwg-build/workspace/tcwg_gnu_2/abe/builds/armv8l-unknown-linux-gnueabihf/armv8l-unknown-linux-gnueabihf/gcc-gcc.git~master-stage2/armv8l-unknown-linux-gnueabihf/libstdc++-v3/include/bits/cow_string.h:1546:32: error: ‘__sv_type’ was not declared in this scope
  | # 00:09:53 make[5]: *** [Makefile:685: cow-string-inst.lo] Error 1
  | # 00:09:53 make[4]: *** [Makefile:802: all-recursive] Error 1
  | # 00:09:53 make[3]: *** [Makefile:580: all-recursive] Error 1
  | # 00:09:53 make[2]: *** [Makefile:505: all] Error 2
  | # 00:09:53 make[1]: *** [Makefile:12329: all-target-libstdc++-v3] Error 2
  | # 00:09:53 make: *** [Makefile:1099: all] Error 2
  | 
  | From
  | # reset_artifacts:
  | -10
  | # true:
  | 0
  | # build_abe gcc:
  | 1

Used configuration :
 *CI config* tcwg_gcc_build armv8l-unknown-linux-gnueabihf
 *configure and test flags:* none, autodetected on armv8l-unknown-linux-gnueabihf--disable-multilib --with-float=hard --with-mode=thumb --with-tune=cortex-a9 --with-arch=armv7-a --with-fpu=neon-fp-armv8

If you have any questions regarding this report, please ask on linaro-toolchain@lists.linaro.org 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
 * http://54.172.246.49:9090/jobs/tcwg_gcc_build--master-arm-precommit/builds/11958/archive/artifacts/artifacts.precommit/
The full lists of regressions and improvements as well as configure and make commands are in
 * http://54.172.246.49:9090/jobs/tcwg_gcc_build--master-arm-precommit/builds/11958/archive/artifacts/artifacts.precommit/notify/

Current build   : http://54.172.246.49:9090/jobs/tcwg_gcc_build--master-arm-precommit/builds/11958/archive/artifacts/
Reference build : http://54.172.246.49:9090/jobs/tcwg_gcc_build--master-arm-build/builds/10337/archive/artifacts/

Warning: we do not enable maintainer-mode nor automatically update
generated files, which may lead to failures if the patch modifies the
master files.