Re: [xml] libxml2/libxslt: global variables considered harmful

[Stefan Behnel <stefan_ml behnel de>]

Daniel Veillard, 28.07.2010 11:53:
> On Wed, Jul 14, 2010 at 02:07:42PM +0200, Michael Stahl wrote:
> > IMHO such a design would also be possible for libxml2/libxslt, but of
> > course this would be an incompatible interface change.
> > usually there isn't much enthusiasm for that kind of thing  :)
>
>    Actually there is a bit of this already, see
>      http://xmlsoft.org/html/libxml-globals.html#xmlGlobalState
> it's stored in thread local variables, and access is redirected
> via macros when compiling, it solves the problem in most cases but
> not all cases. Plus that doesn't fix libxslt which is hit very hard
> with the issue.

Same problem here. There were a couple of bug reports in the past regarding 
lxml's interaction with the original libxml2 Python bindings which often 
leads to crashes. The currently recommended way of working around this is 
to link lxml statically against its dependencies. Not a perfect solution, 
but a rather safe one.

Stefan