Dear contributor,

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

In  aarch64 native, after:
  | commit gcc-17-570-g79e29562907b
  | Author: Avi Kivity <[email protected]>
  | Date:   Thu Feb 26 19:59:41 2026 +0200
  | 
  |     libstdc++: optimize std::uninitialized_move{,_n}() to memcpy when 
possible [PR121789]
  |     
  |     std::uninitialized_move{,_n} delegates to the corresponding
  |     std::uninitialized_copy() variant after wrapping with a move
  |     iterator, but the std::uninitialized_copy() doesn't unwrap the
  | ... 17 lines of the commit log omitted.

Produces 1 regression:
  | 
  | regressions.sum:
  | Running g++:g++.dg/torture/dg-torture.exp ...
  | FAIL: g++.dg/torture/pr118521.C -O1  (test for excess errors)

Used configuration :
 *CI config* tcwg_gcc_check aarch64-linux-gnu
 *configure and test flags:* none, autodetected on 
aarch64-unknown-linux-gnu--disable-multilib --enable-fix-cortex-a53-835769 
--enable-fix-cortex-a53-843419 --with-arch=armv8-a

We track this bug report under https://linaro.atlassian.net/browse/GNU-1906. 
Please let us know if you have a fix.

If you have any questions regarding this report, please ask on 
[email protected] 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 *.log.1.xz files in
 * 
http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/10197/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_gcc_check--master-aarch64-build/builds/10197/archive/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * 
http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/10197/archive/artifacts/sumfiles/xfails.xfail

Current build   : 
http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/10197/archive/artifacts/
Reference build : 
http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-aarch64-build/builds/10196/archive/artifacts/

Instruction to reproduce the build : 
https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/79e29562907b454cdb867195b34cf63156d2d0cc/tcwg_gcc_check/master-aarch64/reproduction_instructions.txt

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

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