Re: [xml] xmlParseMemory returns 0

["Peter Jacobi" <pj walter-graphtek com>]

Hi Martin,

It's your C compiler, which kindly implements the standard feature
"trigraphs", which is a method of expressing several characters
by triples starting with "??". 

To avoid trigraph substitution, you can split the string literal:

const char * input = 
      "<?xml version=\"1.0\"?>  <BADTAG>Is this considered invalid XML ?" 
"?</BADTAG>";

Or escape the second '?', but I recommend against, as this
is undefined behaviour under C++ and string splitting works
for both languages.

Regards,
Peter Jacobi

From:                   "Martin Glass" <martinglass attbi com>
To:                     <xml gnome org>
Subject:                [xml] xmlParseMemory returns 0
Date sent:              Tue, 3 Sep 2002 22:07:15 -0600

> Hi all,
>   I have compiled libxml2 (2.4.24) under Windows, and am successfully
> parsing all my stuff, with one exception -- xmlParseMemory always returns
> null when the content of a tag ends in "??".  I checked it with xmllint, and
> it didn't complain...
>   Is there something I've forgotten to do?  This just seems a little strange
> to me.
>
> Thanks,
> Martin
>
> The following code sums it up:
>
> const char * input = \
>       "<?xml version=\"1.0\"?>
>   <BADTAG>Is this considered invalid XML ??</BADTAG>";
>
> void main ()
> {
>   xmlDocPtr doc;
>   int size = strlen(input);
>   printf("size: %d\n", size);
>
>   doc = xmlParseMemory(input, size);
>   printf("doc: %p\n", doc);
> };
>
>
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