[Linaro-TCWG-CI] gcc-17-1279-gf6103f3a1e42: Failure on aarch64

[ci_notify@linaro.org]

Dear contributor,

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

In bootstrap_build master-aarch64-bootstrap_debug, after:
  | commit gcc-17-1279-gf6103f3a1e42
  | Author: Kevin Stefanov <kevinstefanov15@gmail.com>
  | Date:   Wed Jun 3 22:46:02 2026 -0600
  | 
  |     [PATCH v4] Replace certain uses of TEST_HARD_REG_BIT in loops with better alternatives
  |     
  |     This change takes loops of the form:
  |     
  |       for (int <i> = 0; <i> < FIRST_PSEUDO_REGISTER; <i>++)
  | ... 87 lines of the commit log omitted.

Produces Failure:
  | Results changed to
  | # reset_artifacts:
  | -10
  | # true:
  | 0
  | # build_abe bootstrap_debug:
  | # FAILED
  | # First few build errors in logs:
  | # 00:37:28 /home/tcwg-buildslave/workspace/tcwg_gnu_3/abe/snapshots/gcc.git~master/gcc/diagnostics/source-printing.cc:1914:1: internal compiler error: in single_pred_edge, at basic-block.h:337
  | # 00:37:28 make[3]: *** [Makefile:1217: diagnostics/source-printing.o] Error 1
  | # 00:37:28 make[2]: *** [Makefile:5224: all-stage3-gcc] Error 2
  | # 00:37:28 make[1]: *** [Makefile:26630: stage3-bubble] Error 2
  | # 00:37:28 make: *** [Makefile:1140: all] Error 2
  | 
  | From
  | # reset_artifacts:
  | -10
  | # true:
  | 0
  | # build_abe bootstrap_debug:
  | 1

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

We track this bug report under https://linaro.atlassian.net/browse/GNU-1920. (Require Linaro login) 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.

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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_bootstrap_build--master-aarch64-bootstrap_debug-build/builds/10069/archive/artifacts/
The full lists of regressions and improvements as well as configure and make commands are in
 * http://54.172.246.49:9090/jobs/tcwg_bootstrap_build--master-aarch64-bootstrap_debug-build/builds/10069/archive/artifacts/notify/

Current build   : http://54.172.246.49:9090/jobs/tcwg_bootstrap_build--master-aarch64-bootstrap_debug-build/builds/10069/archive/artifacts/
Reference build : http://54.172.246.49:9090/jobs/tcwg_bootstrap_build--master-aarch64-bootstrap_debug-build/builds/10068/archive/artifacts/

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/f6103f3a1e42fe4db15f3c1d96847cd4a4829e4e/tcwg_bootstrap_build/master-aarch64-bootstrap_debug/reproduction_instructions.txt

Full commit : See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git