Re: [xml] libxml2 trouble with GCC 3.0

[Daniel Veillard <veillard redhat com>]

On Thu, Jun 21, 2001 at 08:37:41AM -0500, Weiqi Gao wrote:
> Hi,
>
> [An earlier message to the same effect was rejected by the mailing list
> because I was attaching both the stdout and the stderr of make check,
> not realizing that the stdout log is close to 1M in size.]
>
> I'm having trouble again with libxml2 and GCC 3.0.  'make check' fails
> with the attached stderr messages.
>
> I reported this a few weeks ago when I'm using a GCC 3.0 snapshot.  Now
> that GCC 3.0 has been released, I'm reporting it again.
>
> It may very well be a bug in my environment [stock Red Hat 7.0 + stock
> GCC 3.0 on an AMD machine.]  But I'm hoping someone on the list have a
> solution to the problem.

  Well William sent me this little note:

----------------- William ---------------
Well, I can't go much further....

When uri.c is compiled with GCC 3.0, some of the generated code is not
correct.  The erroneous code happens when the compilation flags
are -O2 -fPIC, but is okay if the -fPIC is not present.  I didn't check for
other combinations.  I have attached the assembler code which is generated -
first without the -fPIC, followed by the code with the flag set.

I was unable to determine exactly what there is about this particular C
source which triggers the problem.  I guess the best thing is to send it off
to the GCC people, and ask for their help.  In the meantime, I suggest you
notify people NOT to use that compiler.
-----------------------------------------

  So it seems you should avoid GCC 3.0 and wait for a bug-fixed version,
I added a entry point on the subject in the libxml FAQ, this will show
up later today at:
    http://xmlsoft.org/FAQ.html

Daniel

-- 
Daniel Veillard      | Red Hat Network http://redhat.com/products/network/
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Sep 17-18 2001 Brussels Red Hat TechWorld http://www.redhat-techworld.com