[Linaro-TCWG-CI] gcc-17-1238-g8e3eff39a456: 147 regressions 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  armv8l-unknown-linux-gnueabihf native, after:
  | commit gcc-17-1238-g8e3eff39a456
  | Author: Richard Sandiford <rdsandiford@googlemail.com>
  | Date:   Tue Jun 2 20:50:27 2026 +0100
  | 
  |     backprop: Move opt-out for abnormal edges
  |     
  |     r6-6843-ga864ad5ba2501d made sure that optimize_phi wouldn't
  |     optimise phi inputs for abnormal edges.  See:
  |     
  | ... 17 lines of the commit log omitted.

Produces 147 regressions:
  | 
  | regressions.sum:
  | Running glibc:stdio-common ...
  | FAIL: stdio-common/tst-printf 
  | FAIL: stdio-common/tst-printf-format-as-c 
  | FAIL: stdio-common/tst-printf-format-as-char 
  | FAIL: stdio-common/tst-printf-format-as-int 
  | ... and 143 more

Used configuration :
 *CI config* tcwg_gnu_native_check_glibc 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

We track this bug report under https://linaro.atlassian.net/browse/GNU-1918. (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 *.log.1.xz files in
 * http://54.172.246.49:9090/jobs/tcwg_gnu_native_check_glibc--master-arm-build/builds/10075/archive/artifacts/00-sumfiles/
The full lists of regressions and improvements as well as configure and make commands are in
 * http://54.172.246.49:9090/jobs/tcwg_gnu_native_check_glibc--master-arm-build/builds/10075/archive/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * http://54.172.246.49:9090/jobs/tcwg_gnu_native_check_glibc--master-arm-build/builds/10075/archive/artifacts/sumfiles/xfails.xfail

Current build   : http://54.172.246.49:9090/jobs/tcwg_gnu_native_check_glibc--master-arm-build/builds/10075/archive/artifacts/
Reference build : http://54.172.246.49:9090/jobs/tcwg_gnu_native_check_glibc--master-arm-build/builds/10074/archive/artifacts/

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/8e3eff39a4564c76e3b12ae30e370f48200f962c/tcwg_gnu_native_check_glibc/master-arm/reproduction_instructions.txt

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