Re: valgrind suppressions for 64bit for ROOT 5.22/00a?

Hi Pete,

I can not reproduce those problems.

It is a bit odd to have so little information with a debug build. I don't remember if valgrind 3.4.1 already has this feature, but newer version of valgrind
have a new option:

    --track-origins=yes
that tracks down the 'origin' of the uninitialized value (in addition to the attempted use).

Cheers,
Philippe.

Peter Elmer wrote:
> Hi,
>
> When running with valgrind (memcheck) with ROOT 5.22/00a for gcc4.3/64bit,
> on both SLC4 and SLC5, I see a tremendous number of errors (>1k) like those
> in (a) below, with varying depths of the nesting of libCint/libCore calls.
> It is sufficient to simply dynamically load the libraries to see the errors.
>
> Currently these aren't suppressed by the suppression file shipped with
> the ROOT sources. Are they known and/or understood?
>
> [The traceback I got below is unfortunately already _after_ building with
> --build=debug, so I don't have any additional information as to where to
> look. I had to use valgrind 3.4.1, too, as earlier versions had problems
> providing any information at all about the stacktrace except the "strlen".]
>
> thanks,
> Pete
>
> (a)
>
> ==23974== Conditional jump or move depends on uninitialised value(s)
> ==23974== at 0x3897A78D8D: strlen (in /lib64/libc-2.5.so)
> ==23974== by 0x496180F: (within /build/364/slc5_amd64_gcc432/lcg/root/5.22.00a-cms2/lib/libCint.so)
> ==23974== by 0x49F4BE4: (within /build/364/slc5_amd64_gcc432/lcg/root/5.22.00a-cms2/lib/libCint.so)
> ==23974== by 0x495E5B6: (within /build/364/slc5_amd64_gcc432/lcg/root/5.22.00a-cms2/lib/libCint.so)
> ==23974== by 0x590446E: (within /build/364/slc5_amd64_gcc432/lcg/root/5.22.00a-cms2/lib/libCore.so)
> ==23974== by 0x5901E7F: (within /build/364/slc5_amd64_gcc432/lcg/root/5.22.00a-cms2/lib/libCore.so)
> ==23974== by 0x5901EB1: (within /build/364/slc5_amd64_gcc432/lcg/root/5.22.00a-cms2/lib/libCore.so)
> ==23974== by 0x59044D5: (within /build/364/slc5_amd64_gcc432/lcg/root/5.22.00a-cms2/lib/libCore.so)
> ==23974== by 0x5455BD2: (within /build/364/slc5_amd64_gcc432/lcg/root/5.22.00a-cms2/lib/libCore.so)
> ==23974== by 0x5C2BFFF: (within /build/364/slc5_amd64_gcc432/external/gcc/4.3.2-cms/lib64/libgcc_s.so.1)
> ==23974== by 0x389760D22A: call_init (in /lib64/ld-2.5.so)
> ==23974== by 0x389760D334: _dl_init (in /lib64/ld-2.5.so)
> ==23974== by 0x3897600AA9: (within /lib64/ld-2.5.so)
>
>
> -------------------------------------------------------------------------
> Peter Elmer E-mail: Peter.Elmer_at_cern.ch Phone: +41 (22) 767-4644
> Address: CERN Division PPE, Bat. 32 2C-14, CH-1211 Geneva 23, Switzerland
> -------------------------------------------------------------------------
>
>
Received on Sat Jun 06 2009 - 00:27:20 CEST