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Re: Perl debugger runs out of memory, hangs or segfaults on XML::Parser::Lite

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From:
Richard Foley
Date:
July 19, 2008 03:38
Subject:
Re: Perl debugger runs out of memory, hangs or segfaults on XML::Parser::Lite
Message ID:
200807191243.59787.Richard.Foley@rfi.net
On Saturday 19 July 2008 10:07:45 Ævar Arnfjörð Bjarmason wrote:
> 
> $ perl5.10.0 -d /tmp/xpl-testcase.pl
> main::(/tmp/xpl-testcase.pl:71):        setHandlers();
>   DB<1> c
> Out of memory!
> 
> perl5.11.0 (blead) will hang given the same task, both 5.10 and blead
> will segfault if "t" (trace) is turned on before "c" (continue).
> 
I'm not sure if this helps, but I get almost the exact opposite result, in 
that with 't' and 'c' under 5.8.8, the program hangs, and with with 5.11.0 
with 't' and 'c' the program runs through.  And with neither do I get an 'Out 
of memory!' message.

> I forgot to mention that none of this happens in 5.8.x, i.e. it's a
> regression in >=5.10.x.
>
It may not be as simple as that (unless it's a regression >= 5.8.x ;)
Here's a resume of what happens to me (in several cases using the debugger 
(perl -d) on your test program:

	5.8.8 + c -> runs through.
	5.8.8 + t + c -> hangs.

	5.11.0 + c -> SEGV at line 65.
	5.11.0 + t + c -> runs through to line 119 (end of prog).

I've attached the -V and -Dr outputs from both 5.8.8 and 5.11.0, from both 
perls, and the output of several runs, for reference.
  
-- 
Richard Foley
Ciao - shorter than aufwiedersehen

http://www.rfi.net/

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