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/log0382c61de115275c09bf1fbe39aa02e6118da28c.log.gz

Automated smoke report for branch blead 5.33.0 patch 
0382c61de115275c09bf1fbe39aa02e6118da28c v5.32.0-3-g0382c61de1
vier.local: Intel(R) Core(TM) i7-3820 CPU @ 3.60GHz (GenuineIntel 3702MHz) 
(x86_64/1 cpu[8 cores])
    on        linux - 5.3.12-200.fc30.x86_64 [Fedora 32]
    using     ccache clang version Clang 10.0.0 (Fedora 10.0.0-2.fc32)
    smoketime 3 hours 50 minutes (average 57 minutes 44 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

v5.32.0-3-g0382c61de1  Configuration (common) 
-Accflags="-Werror=declaration-after-statement -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


Locally applied patches:
    SMOKE0382c61de115275c09bf1fbe39aa02e6118da28c

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

MANIFEST did not declare '.mailmap'

Compiler messages(gcc):
awk: cmd. line:1: warning: regexp escape sequence `\=' is not a known regexp 
operator
sv.c:2078:22: warning: implicit conversion from 'UV' (aka 'unsigned long') to 
'double' changes value from 9223372036854775807 to 9223372036854775808 
[-Wimplicit-int-float-conversion]
sv.c:11182:27: warning: implicit conversion from 'UV' (aka 'unsigned long') to 
'double' changes value from 18446744073709551615 to 18446744073709551616 
[-Wimplicit-int-float-conversion]
./perl.h:1918:20: note: expanded from macro 'UV_MAX'
./perl.h:2604:29: note: expanded from macro 'PERL_UQUAD_MAX'
sv.c:12559:41: warning: adding 'int' to a string does not append to the string 
[-Wstring-plus-int]
./handy.h:545:37: note: expanded from macro 'strnEQ'
sv.c:12559:41: note: use array indexing to silence this warning
./inline.h:1965:48: warning: implicit conversion from 'IV' (aka 'long') to 
'double' changes value from 9223372036854775807 to 9223372036854775808 
[-Wimplicit-int-float-conversion]
./perl.h:1916:20: note: expanded from macro 'IV_MAX'
./perl.h:2606:29: note: expanded from macro 'PERL_QUAD_MAX'
./perl.h:3668:58: note: expanded from macro 'UNLIKELY'
./handy.h:111:24: note: expanded from macro 'cBOOL'
./perl.h:3647:62: note: expanded from macro 'EXPECT'
pp_ctl.c:1231:27: warning: implicit conversion from 'IV' (aka 'long') to 
'double' changes value from 9223372036854775807 to 9223372036854775808 
[-Wimplicit-int-float-conversion]
POSIX.xs:1320:16: warning: implicit conversion from 'UV' (aka 'unsigned long') 
to 'double' changes value from 18446744073709551615 to 18446744073709551616 
[-Wimplicit-int-float-conversion]
../../perl.h:1918:20: note: expanded from macro 'UV_MAX'
../../perl.h:2604:29: note: expanded from macro 'PERL_UQUAD_MAX'
./const-xs.inc:131:42: warning: AI_IDN_ALLOW_UNASSIGNED is deprecated 
[-W#pragma-messages]
/usr/include/netdb.h:609:3: note: expanded from macro 'AI_IDN_ALLOW_UNASSIGNED'
/usr/include/sys/cdefs.h:495:3: note: expanded from macro 
'__glibc_macro_warning'
/usr/include/sys/cdefs.h:493:42: note: expanded from macro 
'__glibc_macro_warning1'
<scratch space>:205:6: note: expanded from here
./const-xs.inc:134:46: warning: AI_IDN_USE_STD3_ASCII_RULES is deprecated 
[-W#pragma-messages]
/usr/include/netdb.h:611:3: note: expanded from macro 
'AI_IDN_USE_STD3_ASCII_RULES'
<scratch space>:208:6: note: expanded from here
./const-xs.inc:386:42: warning: NI_IDN_ALLOW_UNASSIGNED is deprecated 
[-W#pragma-messages]
/usr/include/netdb.h:650:3: note: expanded from macro 'NI_IDN_ALLOW_UNASSIGNED'
<scratch space>:211:6: note: expanded from here
./const-xs.inc:389:46: warning: NI_IDN_USE_STD3_ASCII_RULES is deprecated 
[-W#pragma-messages]
/usr/include/netdb.h:652:3: note: expanded from macro 
'NI_IDN_USE_STD3_ASCII_RULES'
<scratch space>:214:6: note: expanded from here
re_comp.c:8251:37: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
../../scope.h:210:4: note: expanded from macro 'LEAVE_with_name'
/usr/include/assert.h:106:11: note: expanded from macro 'assert'
re_comp.c:6665:13: note: expanded from macro 'CHECK_RESTUDY_GOTO_butfirst'
re_comp.c:8299:2: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
regcomp.c:8251:37: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
./scope.h:210:4: note: expanded from macro 'LEAVE_with_name'
/usr/include/assert.h:95:7: note: expanded from macro 'assert'
regcomp.c:6665:13: note: expanded from macro 'CHECK_RESTUDY_GOTO_butfirst'
regcomp.c:8299:2: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_hot.c:192:3: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_hot.c:4557:5: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_hot.c:4564:2: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp.c:5730:2: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp.c:5786:2: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp.c:6378:6: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_ctl.c:1107:5: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_ctl.c:1113:2: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_ctl.c:3578:5: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_ctl.c:4099:7: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_ctl.c:4767:5: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_ctl.c:4866:3: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_ctl.c:4898:3: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_ctl.c:4920:6: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_ctl.c:5766:2: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_sys.c:312:6: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_sys.c:397:5: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_sys.c:586:5: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_sys.c:989:5: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
pp_sys.c:1024:9: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
toke.c:4280:5: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
toke.c:6223:20: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
toke.c:12035:3: warning: result of comparison against a string literal is 
unspecified (use an explicit string comparison function instead) 
[-Wstring-compare]
<scratch space>:101:6: note: expanded from here
<scratch space>:104:6: note: expanded from here
<scratch space>:107:6: note: expanded from here
<scratch space>:110:6: note: expanded from here
<scratch space>:182:6: note: expanded from here
<scratch space>:185:6: note: expanded from here
<scratch space>:188:6: note: expanded from here
<scratch space>:191:6: note: expanded from here
<scratch space>:74:6: note: expanded from here
<scratch space>:77:6: note: expanded from here
<scratch space>:80:6: note: expanded from here
<scratch space>:83:6: note: expanded from here

Non-Fatal messages(gcc):

-- 
Report by Test::Smoke v1.72 running on perl 5.30.3
(Reporter v0.053 / Smoker v0.046)

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