Re: [xml] XPath queries on document fragments without a document

[Daniel Veillard <veillard redhat com>]

On Thu, Sep 26, 2002 at 03:12:01PM -0700, Sean Chittenden wrote:
> I'm using xmlMemSetup() and that made a big difference in terms of
> preventing libxml from stepping on Ruby's toes.  I'm actually worried
> that there's some place in libxml where it's still not using the
> memory routines specified by xmlMemSetup(), but I couldn't find any
> violators.

  I run constantly in my devel environment with memory debug enabled
and under those conditions, an xmlMalloc'ed passed to free() or
a block allocated with malloc and passed to xmlFree() immediately
generate either an error message or a segfault, this is very very
unlikely to happen.

> You know what Matt did in terms reference counting?  I don't think

  Hum, no... ask him :-)

> If I parse a document with xmlParseDocument() and the document is well
> formed ('<a>b</a>'), when I assign the result out of the parser
> context, it seems as though when the parser context is free()'ed that
> it's also free()'ing ctxt->myDoc.  If I make a copy of myDoc I seem to

  see for example xmlSAXParseDoc() for how to proceed, if you start
using low level APIs of libxml2, you'd better look at the existing code
in libxml2 making use of it to avoid trial and errors.

Daniel

-- 
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