[Valgrind-developers] standard suppressions in helgrind, drd, tsan

[Konstantin S. <kon...@gm...>]

[changed subject]

On Mon, Mar 30, 2009 at 2:10 PM, Bart Van Assche
<bar...@gm...> wrote:
> On Mon, Mar 30, 2009 at 4:53 PM, Konstantin Serebryany
> <kon...@gm...> wrote:
>>> Did you check whether DRD reports a false positive on your TLS test case ?
>>
>> DRD says nothing about TLS in this test (it prints lots of reports
>> about _dl_lookup_symbol_x though)
>
> On which distro did this occur ?

We have (a slightly modified) Ubuntu Hardy Heron LTS (8.04).

>  The following command does not
> complain about _dl_lookup_symbol_x on Ubuntu 7.10 nor on openSUSE
> 11.1:
>
> ./vg-in-place --tool=drd --check-stack-var=yes
> drt/unittest/racecheck_unittest 130

using recent trunk:
% ./vg-in-place --tool=drd --check-stack-var=yes
~/drt/trunk/unittest/racecheck_unittest 130
==6335== Conflicting load by thread 1/1 at 0x0cb363a8 size 8
==6335==    at 0xC927332: _dl_lookup_symbol_x (in
/usr/grte/v1/lib64/ld-2.3.6.so)
==6335==    by 0xC92AB31: fixup (in /usr/grte/v1/lib64/ld-2.3.6.so)
==6335==    by 0xC92A861: _dl_runtime_resolve (in
/usr/grte/v1/lib64/ld-2.3.6.so)
==6335==    by 0x41EB38: MyThreadArray::Start() (racecheck_unittest.cc:267)
==6335==    by 0x40CB3C: test130::Run() (racecheck_unittest.cc:6059)
==6335==    by 0x41F104: Test::Run() (racecheck_unittest.cc:161)
==6335==    by 0x41616C: main (racecheck_unittest.cc:230)
... <more>

the file default.supp does not seem to have anything relevant.
In tsan I simply ignore everything inside ld-*.so. Helps with performance too.

--kcc



>
> Bart.
>