This now errors on undefined behavior instead of warning.  Smoke logs available at http://m-l.org/~perl/smoke/perl/x86_64-linux-thread-multi/blead_clang_quick_sanitize=undefined/log6f836886eca09c5df3a9f985231636e29b8f10dc.log.gz

Automated smoke report for branch blead 5.41.7 patch 6f836886eca09c5df3a9f985231636e29b8f10dc v5.41.6-136-g6f836886ec
vier.local: Intel(R) Xeon(R) CPU E5-1620 0 @ 3.60GHz (GenuineIntel 3600MHz) (x86_64/1 cpu[8 cores])
    on        linux - 6.10.5-200.fc40.x86_64 [Fedora Linux 40]
    using     ccache clang version Clang 18.1.8 (Fedora 18.1.8-1.fc40)
    smoketime 3 hours 7 minutes (average 46 minutes 45 seconds)

Summary: PASS

O = OK  F = Failure(s), extended report at the bottom
X = Failure(s) under TEST but not under harness
? = still running or test results not (yet) available
Build failures during:       - = unknown or N/A
c = Configure, m = make, M = make (after miniperl), t = make test-prep

v5.41.6-136-g6f836886ec  Configuration (common) -Accflags="-g -fno-omit-frame-pointer -fno-sanitize-recover=undefined -fsanitize-blacklist=`pwd`/asan_ignore" -Aldflags="-fno-sanitize-recover=undefined" -Dcc="ccache clang"
----------- ---------------------------------------------------------
O O         
O O         -Duseithreads
| +--------- -DDEBUGGING
+----------- no debugging


Testsuite was run only with 'harness' and HARNESS_OPTIONS=j4

MANIFEST did not declare '.mailmap'

Passed Todo tests: (common-args) -Accflags="-g -fno-omit-frame-pointer -fno-sanitize-recover=undefined -fsanitize-blacklist=`pwd`/asan_ignore" -Aldflags="-fno-sanitize-recover=undefined" -Dcc="ccache clang"
[default] 
[default] -Duseithreads
../t/run/todo.t.............................................PASSED
    3-4
(See log because mailing list size limit is too small.)
Non-Fatal messages(gcc):

-- 
Report by Test::Smoke v1.72 running on perl 5.38.2
(Reporter v0.053 / Smoker v0.046)