Bug#710439: More info

["Lennart Sorensen" <lsorense@csclub.uwaterloo.ca>]

If I disable use of altivec (VMX) in pixman, then the problem goes away.
Makes sense I suppose given it was in the VMX code that it was crashing.

Trying to use valgrind on pixman's failing tests shows lots of cases
of reading or writing beyong malloc'd blocks end, but it shows that for
running under 2.17 where it doesn't crash.  Of course not crashing
doesn't mean the code is correct.

I can't figure out why libc6 2.13 has it fail and 2.17 makes it work
(without even recompiling pixman).

Of course it is still possible that pixman's altivec code is doing
something wrong.  But the buildd logs show it passing pixman building on
one of the power5+ build machines, although using 2.13-37 (not -38) libc6.
Using -37 does not make it work for me though.

-- 
Len Sorensen