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Assertion `PL_valid_types_PVX[SvTYPE(_svpvx) & SVt_MASK]' failed #17169

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p5pRT opened this issue Oct 3, 2019 · 3 comments
Open

Assertion `PL_valid_types_PVX[SvTYPE(_svpvx) & SVt_MASK]' failed #17169

p5pRT opened this issue Oct 3, 2019 · 3 comments
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assertion failure

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@p5pRT
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p5pRT commented Oct 3, 2019

Migrated from rt.perl.org#134474 (status was 'new')

Searchable as RT134474$
@p5pRT
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p5pRT commented Oct 3, 2019 •
edited by toddr

From geeknik@protonmail.ch

While fuzzing Perl v5.31.4-273-ge55ec39201 compiled with Clang 10 and UBSan, the following assertion failure was observed.

./perl -e 'map2,map$$_[$_],@V_=nmap2,map$$A[$_],@V_=neeee'

perl: pp_hot.c:5387: SV *Perl_vivify_ref(SV *, U32): Assertion `PL_valid_types_PVX[SvTYPE(_svpvx) & SVt_MASK]' failed.
Aborted

@dur-randir
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Looks like stack-not-refcounted for me.

@jkeenan
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jkeenan commented Apr 29, 2020

Failure confirmed on blead on Linux:

$ git describe
v5.31.11-7-gf50fa03b75
$ sh ./Configure -des -Dusedevel -DDEBUGGING -Dcc=clang && make
$ ./perl -e 'map2,map$$_[$_],@V_=nmap2,map$$A[$_],@V_=neeee'
perl: pp_hot.c:5433: SV *Perl_vivify_ref(SV *, U32): Assertion `PL_valid_types_PVX[SvTYPE(_svpvx) & SVt_MASK]' failed.
Aborted (core dumped)

@xenu xenu removed the Severity Low label Dec 29, 2021
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@xsawyerx @jkeenan @khwilliamson @xenu @dur-randir @p5pRT