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-17-496-gda540dc6d763
  | Author: Tomasz KamiƄski <[email protected]>
  | Date:   Wed May 13 14:51:02 2026 +0200
  | 
  |     libstdc++: Test for unsupported engine range for 128bits floating 
points [PR119739]
  |     
  |     This patch add test illustrating, that after implementing P0952 "A new 
specification for
  |     std::generate_canonical",  generators, that emit range of 
non-power-of-two size, that
  |     span over B bits, are not supported in combination with 128bits integer 
are not
  | ... 16 lines of the commit log omitted.

Produces 7 regressions:
  | 
  | regressions.sum:
  | Running libstdc++:libstdc++-dg/conformance.exp ...
  | FAIL: 
26_numerics/random/uniform_real_distribution/operators/gencanon_eng_neg.cc 
-std=gnu++20  (test for errors, line 57)
  | FAIL: 
26_numerics/random/uniform_real_distribution/operators/gencanon_eng_neg.cc 
-std=gnu++20  (test for errors, line 58)
  | FAIL: 
26_numerics/random/uniform_real_distribution/operators/gencanon_eng_neg.cc 
-std=gnu++20  (test for errors, line 65)
  | FAIL: 
26_numerics/random/uniform_real_distribution/operators/gencanon_eng_neg.cc 
-std=gnu++20  (test for errors, line 66)
  | ... and 3 more

Used configuration :
 *CI config* tcwg_gcc_check 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-1902. 
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-arm-build/builds/10207/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-arm-build/builds/10207/archive/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * 
http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10207/archive/artifacts/sumfiles/xfails.xfail

Current build   : 
http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10207/archive/artifacts/
Reference build : 
http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10206/archive/artifacts/

Instruction to reproduce the build : 
https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/da540dc6d7634a708768008d23b3cee9110a7121/tcwg_gcc_check/master-arm/reproduction_instructions.txt

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

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