Re: libxml incompatibility - Mailing list pgsql-hackers

From Andrew Dunstan
Subject Re: libxml incompatibility
Date
Msg-id 49B1F3DE.7060003@dunslane.net
Whole thread Raw
In response to Re: libxml incompatibility  (Alvaro Herrera <alvherre@commandprompt.com>)
List pgsql-hackers

Alvaro Herrera wrote:
> Andrew Dunstan wrote:
>   
>> Holger Hoffstaette wrote:
>>
>>     
>>> http://www.nabble.com/New-libxml-which-is-reentrant---to18329452.html
>>>
>>> Seems to me that Perl (?) is calling functions it is not supposed to call
>>> - I'm guessing due to assumptions about mismatching lifecycles. The
>>> parsing functions themselves are supposedly reentrant.
>>>       
>> Maybe someone can trace the libxml calls ... not sure how exactly ...  
>> given Alvaro's example, it doesn't seem likely to me that this is due to  
>> a call to xmlCleanupParser(), but maybe the perl code invokes by simply  
>> doing "use XML::LibXML;" calls that for some perverse reason.
>>     
>
> Something that came to my mind was that maybe the change of memory
> management (to make it use palloc) could be confusing libxml somehow.
>
>   


Seems very possible. But what would perl be doing just as a result of 
loading the module, not even doing anything, that would cause a segfault 
because of that?

cheers

andrew


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