Re: [xml] Problems with the "decimal" definition of a RELAX NG XSD on the Solaris 2.8 platform during validation using xmllint

["William M. Brack" <wbrack mmm com hk>]

Kasimier Buchcik said:
> Hi,
>
> William M. Brack wrote:
> > William M. Brack said:
> >
> > > John Hockaday ga gov au said:
> > >
> > > > Hi All,
> > > >
> > > > I have a RELAX NG XSD that uses a 'decimal' definition. I am validating an
> > > > XML document using xmllint but I get unexpected errors.  Libxml2 is running
> > > > on Solaris 2.8 with the following version of libxml2:
> > > >
> > > > /usr/local/bin/xmllint: using libxml version 20616
> > > >   compiled with: DTDValid FTP HTTP HTML C14N Catalog XPath XPointer
> > > > XInclude
> > > > Iconv Unicode Regexps Automata Schemas
> > > >
> > > > If I use a decimal like this '130.480907024' then there are no errors but
> > > > if
> > > > I extend the number of decimal points like this '130.48090702489' then I
> > > > get
> > > > the following error:
> > > >
> > > > "
> > > > ANZNT0782000040.xml:61: element eastbc: Relax-NG validity error : Error
> > > > validating datatype decimal
> > > > "
> > > > It seems to me that the precision of the 'decimal' definition in the
> > > > libraries is causing the problem.  The problem doesn't occur on LINUX or
> > > > MAC
> > > > platforms.  The funny thing is that Solaris 2.8 is a 64 bit system.  Can
> > > > anyone help me with this?
> > > >
> > > > The RELAX NG XSD is located at
> > > > http://asdd.ga.gov.au/asdd/tech/relaxng/anzmeta-1.3.1.rng and the XML
> > > > document instance is at
> > > > http://asdd.ga.gov.au/asdd/work/ANZNT0782000040.xmlm
> > > > if that helps anyone.
> > > >
> > > > Thanks.
> > > >
> > > >
> > > > John
> > >
> > > I was able to reproduce this problem on x86 and x86_64 systems (with
> > > different
> > > symptoms on each :-).  It's caused by some coding within xmlschemastypes.c,
> > > and may occur anytime the total number of digits in the number exceeds 10.
> > > I'm working on a "proper" solution for it, but it may be a day or two before
> > > I
> > > can complete it.  I'll let you know when the fix is complete.
> > >
> > > Bill
> >
> >
> > OK, I think I have fixed the problem.  The changes are in CVS
> > (xmlschemastypes.c) - let me know if it now works OK on Solaris, and thanks
> > very much for reporting it.
> >
> > Bill
>
> Bill, if you are already at it: if you could implement support for
> values bigger than 32 bit for decimals, it would erase a couple of
> hundred failures in the NIST tests for XML schemata.
>
> Greetings,
>
> Kasimier

After my enhancement, hopefully the coding now handles 24 significant digits
(but really needs to be more thoroughly tested).  Let me know whether if you
find any stupid mistakes (the clever ones you can go ahead and fix without
comment).

Bill