Hello Jan,
---------- Původní e-mail ----------
Od: Jan Hubicka via Gcc <gcc@gcc.gnu.org>
Komu: Martin Jambor <mjam...@suse.cz>
Datum: 25. 11. 2021 11:13:33
Předmět: Re: distinguishing gcc compilation valgrind false positives
> >
> > diff --git a/gcc/ipa-prop.h b/gcc/ipa-prop.h
> > index 42842d9466a..1d0c115465c 100644
> > --- a/gcc/ipa-prop.h
> > +++ b/gcc/ipa-prop.h
> > @@ -623,8 +623,8 @@ ipa_node_params::ipa_node_params ()
> > : descriptors (NULL), lattices (NULL), ipcp_orig_node (NULL),
> > known_csts (vNULL), known_contexts (vNULL), analysis_done (0),
> > node_enqueued (0), do_clone_for_all_contexts (0), is_all_contexts_clone
> > (0),
> > - node_dead (0), node_within_scc (0), node_calling_single_call (0),
> > - versionable (0)
> > + node_dead (0), node_within_scc (0), node_is_self_scc (0),
> > + node_calling_single_call (0), versionable (0)
> > {
> > }
>
> Oops, can you please commit the change to master and all active
> branches?
> OK. To be honest I am not 100% sure if the flag is not always
> initialized later.
> Zdenek, can you, please, check if the undefined warning in ipcp goes
> away with this patch and if so, post what are the remaining ones?
I can confirm that zero-initializing node_is_self_scc prevents the
uninitialised use warnings in incorporate_penalties (ipa-cp.c:3282)
Thanks,
Zdenek
