[Linaro-TCWG-CI] gcc-15-8904-ge200f53a555: 2 regressions 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 gcc_check master-aarch64, after:
  | commit gcc-15-8904-ge200f53a555
  | Author: Jonathan Wakely <jwakely@redhat.com>
  | Date:   Tue Mar 25 13:24:08 2025 +0000
  | 
  |     libstdc++: Optimize std::vector construction from input iterators [PR108487]
  |     
  |     LWG 3291 make std::ranges::iota_view's iterator have input_iterator_tag
  |     as its iterator_category, even though it satisfies the C++20
  |     std::forward_iterator concept. This means that the traditional
  | ... 41 lines of the commit log omitted.

Produces 2 regressions:
  | 
  | regressions.sum:
  | Running g++:g++.dg/dg.exp ...
  | FAIL: g++.dg/tree-ssa/initlist-opt1.C -std=c++26  scan-tree-dump gimple "_M_range_initialize<const char\\* const\\*>"
  | FAIL: g++.dg/tree-ssa/initlist-opt2.C -std=c++26  scan-tree-dump gimple "_M_range_initialize<const char\\* const\\*>"

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

We track this bug report under https://linaro.atlassian.net/browse/GNU-1548. 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
 * https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3491/artifact/artifacts/00-sumfiles/
The full lists of regressions and improvements as well as configure and make commands are in
 * https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3491/artifact/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3491/artifact/artifacts/sumfiles/xfails.xfail

Current build   : https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3491/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3490/artifact/artifacts

Instruction to reproduce the build : https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/e200f53a5556516ec831e6b7a34aaa0f10a4ab0a/tcwg_gcc_check/master-aarch64/reproduction_instructions.txt

Full commit : https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=e200f53a5556516ec831e6b7a34aaa0f10a4ab0a