[Phoenix-pm] Fwd: [perl #54044] perl -wle '%::=();//' crash
Scott Walters
scott at slowass.net
Wed May 14 03:34:17 PDT 2008
Hi all,
Keeping up with my perversion of forwarding Perl crashers to the
list, here's the latest.
-scott
----- Forwarded message from Reini Urban <perlbug-followup at perl.org> -----
From: Reini Urban <perlbug-followup at perl.org>
Resent-To: perl5-porters at perl.org
# New Ticket Created by Reini Urban
# Please include the string: [perl #54044]
# in the subject line of all future correspondence about this issue.
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=54044 >
perl -wle '%::=();//' crashes in all perl versions.
In regexec.c PL_replgv is empty after the whole symboltable is cleared
and then used as GV.
regexec.c: SV* const oreplsv = GvSV(PL_replgv);
The gp pointer is 0x0, the type is BIND.
I would check for the empty gp pointer in PL_replgv and create an empty
but valid stash.
The problem is the semantically an empty stash should be allowed in
simple regex's. At least perl should not crash.
--
Reini Urban
http://phpwiki.org/ http://murbreak.at/
----- End forwarded message -----
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