[Linaro-TCWG-CI] gcc-16-6028-g765ca9133971: Failure on aarch64

Dear contributor,

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

In bootstrap_build master-aarch64-bootstrap_profiled_lto_lean, after:
  | commit gcc-16-6028-g765ca9133971
  | Author: Alfie Richards <[email protected]>
  | Date:   Tue Nov 18 10:50:04 2025 +0000
  | 
  |     aarch64: Cache the PCS value for a function
  |     
  |     As aarch64_function_arg_regno_p is a very hot function called many times for a
  |     function it should not call fndecl_abi every time as it is expensive and
  |     unecessasary.
  | ... 15 lines of the commit log omitted.

Produces Failure:
  | Results changed to
  | # reset_artifacts:
  | -10
  | # true:
  | 0
  | # build_abe bootstrap_profiled_lto_lean:
  | # FAILED
  | # First few build errors in logs:
  | # 02:00:18 lto1: internal compiler error: Segmentation fault
  | # 02:00:19 make[4]: *** [/tmp/ccdGZa1n.mk:468: /tmp/ccLyEbKL.ltrans233.ltrans.o] Error 1
  | # 02:01:10 lto-wrapper: fatal error: make returned 2 exit status
  | # 02:01:11 /usr/bin/ld: error: lto-wrapper failed
  | # 02:01:12 collect2: error: ld returned 1 exit status
  | # 02:01:12 make[3]: *** [/home/tcwg-buildslave/workspace/tcwg_gnu_2/abe/snapshots/gcc.git~master/gcc/cp/Make-lang.in:147: cc1plus] Error 1
  | # 02:01:12 make[2]: *** [Makefile:5364: all-stagefeedback-gcc] Error 2
  | # 02:01:12 make[1]: *** [Makefile:27213: stagefeedback-bubble] Error 2
  | # 02:01:12 make: *** [Makefile:27233: profiledbootstrap] Error 2
  | 
  | From
  | # reset_artifacts:
  | -10
  | # true:
  | 0
  | # build_abe bootstrap_profiled_lto_lean:
  | 1

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

We track this bug report under https://linaro.atlassian.net/browse/GNU-1781. 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_bootstrap_build--master-aarch64-bootstrap_profiled_lto_lean-build/1016/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-aarch64-bootstrap_profiled_lto_lean-build/1016/artifact/artifacts/notify/

Current build   : https://ci.linaro.org/job/tcwg_bootstrap_build--master-aarch64-bootstrap_profiled_lto_lean-build/1016/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_bootstrap_build--master-aarch64-bootstrap_profiled_lto_lean-build/1015/artifact/artifacts

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/765ca9133971c94e7a6b94be230aba6d8d00db4b/tcwg_bootstrap_build/master-aarch64-bootstrap_profiled_lto_lean/reproduction_instructions.txt

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