[Linaro-TCWG-CI] gcc-16-3662-ga632becefad: Failure on arm

[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-arm-bootstrap_debug, after:
  | commit gcc-16-3662-ga632becefad
  | Author: Richard Biener <rguenther@suse.de>
  | Date:   Mon Sep 8 12:40:30 2025 +0200
  | 
  |     tree-optimization/121829 - bogus CFG with asm goto
  |     
  |     When the vectorizer removes a forwarder created earlier by split_edge
  |     it uses redirect_edge_pred for convenience and efficiency.  That breaks
  |     down when the edge split is originating from an asm goto as that is
  | ... 10 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:
  | # 00:11:24 elf.c:6257:1: internal compiler error: Segmentation fault
  | # 00:11:25 make[6]: *** [Makefile:628: std_stacktrace-elf.lo] Error 1
  | # 00:11:25 make[5]: *** [Makefile:797: all-recursive] Error 1
  | # 00:11:25 make[4]: *** [Makefile:577: all-recursive] Error 1
  | # 00:11:25 make[3]: *** [Makefile:502: all] Error 2
  | # 00:11:25 make[2]: *** [Makefile:16815: all-stage1-target-libstdc++-v3] Error 2
  | # 00:11:25 make[1]: *** [Makefile:25557: stage1-bubble] Error 2
  | # 00:11:25 make: *** [Makefile:1106: all] Error 2
  | 
  | From
  | # reset_artifacts:
  | -10
  | # true:
  | 0
  | # build_abe bootstrap_debug:
  | 1

Used configuration :
 *CI config* tcwg_bootstrap_build master-arm-bootstrap_debug
 *configure and test flags:* none, autodetected on armv8l-unknown-linux-gnueabihf

We track this bug report under https://linaro.atlassian.net/browse/GNU-1675. 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.

-----------------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
 * https://ci.linaro.org/job/tcwg_bootstrap_build--master-arm-bootstrap_debug-build/944/artifact/artifacts/
The full lists of regressions and improvements as well as configure and make commands are in
 * https://ci.linaro.org/job/tcwg_bootstrap_build--master-arm-bootstrap_debug-build/944/artifact/artifacts/notify/

Current build   : https://ci.linaro.org/job/tcwg_bootstrap_build--master-arm-bootstrap_debug-build/944/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_bootstrap_build--master-arm-bootstrap_debug-build/943/artifact/artifacts

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/a632becefad29206a980cc080eee74ed808f9cd3/tcwg_bootstrap_build/master-arm-bootstrap_debug/reproduction_instructions.txt

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