Re: [Valgrind-users] helgrind and atomic operations

[David F. <fa...@kd...>]

For a different approach to this issue: if helgrind can't reliably detect 
atomic operations, as discussed before, and if VALGRIND_HG_ENABLE_CHECKING is 
broken (see my previous email in this thread), then a simple solution is to 
add suppressions.

{
   QBasicAtomicPointer_load
   Helgrind:Race
   fun:_ZNK19QBasicAtomicPointer*loadAcquireEv
}
has cut down the noise considerably in my tests.
Plus a few similar ones, like QBasicAtomicInt.

Historically we had Qt-related suppressions in a suppression file shipped with 
KDE, but there are many more Qt users than the KDE developers. Would it be OK
to ship a qt5.supp file within valgrind, and load it unconditionnally, like 
xfree-4.supp is currently handled?

-- 
David Faure, fa...@kd..., http://www.davidfaure.fr
Working on KDE, in particular KDE Frameworks 5