[Linaro-TCWG-CI] gcc-16-2258-g0eac9cfee8cb: Failure on aarch64

Dear contributor,

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

In simplebootstrap_build master-aarch64-bootstrap, after:
  | commit gcc-16-2258-g0eac9cfee8cb
  | Author: Jakub Jelinek <[email protected]>
  | Date:   Tue Jul 15 15:00:33 2025 +0200
  | 
  |     c, c++: Extend -Wunused-but-set-* warnings [PR44677]
  |     
  |     The -Wunused-but-set-* warnings work by using 2 bits on VAR_DECLs &
  |     PARM_DECLs, TREE_USED and DECL_READ_P.  If neither is set, we typically
  |     emit -Wunused-variable or -Wunused-parameter warning, that is for variables
  | ... 127 lines of the commit log omitted.

Produces Failure:
  | Results changed to
  | # reset_artifacts:
  | -10
  | # true:
  | 0
  | # build_abe bootstrap:
  | # FAILED
  | # First few build errors in logs:
  | # 00:07:51 /home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/config/libbid/bid_binarydecimal.c:130:31: error: variable ‘c3’ set but not used [-Werror=unused-but-set-variable=]
  | # 00:07:52 /home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/config/libbid/bid_binarydecimal.c:130:31: error: variable ‘c3’ set but not used [-Werror=unused-but-set-variable=]
  | # 00:07:52 /home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/config/libbid/bid_binarydecimal.c:130:31: error: variable ‘c3’ set but not used [-Werror=unused-but-set-variable=]
  | # 00:07:52 /home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/config/libbid/bid_binarydecimal.c:130:31: error: variable ‘c3’ set but not used [-Werror=unused-but-set-variable=]
  | # 00:08:15 make[3]: *** [Makefile:657: bid_binarydecimal.o] Error 1
  | # 00:08:15 make[2]: *** [Makefile:19575: all-stage1-target-libgcc] Error 2
  | # 00:08:15 make[1]: *** [Makefile:25557: stage1-bubble] Error 2
  | # 00:08:15 make: *** [Makefile:1106: all] Error 2
  | 
  | From
  | # reset_artifacts:
  | -10
  | # true:
  | 0
  | # build_abe bootstrap:
  | 1

Used configuration :
 *CI config* tcwg_simplebootstrap_build master-aarch64-bootstrap
 *configure and test flags:* none, autodetected on aarch64-unknown-linux-gnu

We track this bug report under https://linaro.atlassian.net/browse/GNU-1634. 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
 * https://ci.linaro.org/job/tcwg_simplebootstrap_build--master-aarch64-bootstrap-build/620/artifact/artifacts/
The full lists of regressions and improvements as well as configure and make commands are in
 * https://ci.linaro.org/job/tcwg_simplebootstrap_build--master-aarch64-bootstrap-build/620/artifact/artifacts/notify/

Current build   : https://ci.linaro.org/job/tcwg_simplebootstrap_build--master-aarch64-bootstrap-build/620/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_simplebootstrap_build--master-aarch64-bootstrap-build/619/artifact/artifacts

Instruction to reproduce the build : https://gitlab.com/Linaro/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/0eac9cfee8cb0b21de866a04d5d59685ab35208f/tcwg_simplebootstrap_build/master-aarch64-bootstrap/reproduction_instructions.txt

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