Re: [xml] runtest mystery bug: name2.xml error case regression test

[Daniel Veillard <veillard redhat com>]

On Tue, Aug 07, 2012 at 12:57:33PM -0400, Daniel Richard G. wrote:
> I've encountered what appears to be a Heisenbug in runtest.
>
> Sometimes, when I run "make check", I see
>
> --------8<--------
> [ -d test   ] || ln -s /afs/teragram.com/user/dgomez/prog/libxml2/test   .
> [ -d result ] || ln -s /afs/teragram.com/user/dgomez/prog/libxml2/result .
> ./runtest &&  ./testrecurse && ./testapi &&  ./testchar&&  ./testdict &&  ./runxmlconf
> ## XML regression tests
> ## XML regression tests on memory
> ## XML entity subst regression tests
> ## XML Namespaces regression tests
> ## Error cases regression tests
> Error for ./test/errors/name2.xml failed
> File ./test/errors/name2.xml generated an error
> ## Error cases stream regression tests
> ## Reader regression tests
> ## Reader entities substitution regression tests
> [snip]
> ## C14N exclusive without comments regression tests
> ## C14N 1.1 without comments regression tests
> ## Catalog and Threads regression tests
> Total 2829 tests, 1 errors, 0 leaks
> make: *** [runtests] Error 1
> -------->8--------
>
> Other times, everything passes. If I invoke runtest by itself, it
> doesn't even fail or succeed consistently. Valgrind turns up
> nothing.
>
> I believe I've found a way for others to reproduce the issue. The
> attached patch (against git master) disables all but the "Error
> cases regression tests" set of tests, and with this change, I get a
> consistent test failure:
>
> --------8<--------
> $ ./runtest
> ## Error cases regression tests
> Error for ./test/errors/name2.xml failed
> File ./test/errors/name2.xml generated an error
> Total 11 tests, 1 errors, 0 leaks
> -------->8--------
>
> I've been unable to track down what's going on, as it occurs deep
> inside the parser code and I'm not on strong footing there.
>
> Can anyone else reproduce this, using the patch?

  I went back and applied this to the current git head, and
it doesn't reproduce anymore. So maybe it was fixed since then,
as a result I pulled 2.8.0, applied your patch, and nope that
doesn't reproduce for me either :-\

  Do you still see the issue with the current git head ?

Daniel

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