https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79198
--- Comment #7 from Martin Jambor <jamborm at gcc dot gnu.org> --- And based on the IRC discussion I had earlier today with Markus, I have also added the following to the patch I'm bootstrapping, even though it is not strictly necessary to prevent OOM in the testcase from comment #1. diff --git a/gcc/ipa-prop.c b/gcc/ipa-prop.c index 22cd61f3b18..834c27d100e 100644 --- a/gcc/ipa-prop.c +++ b/gcc/ipa-prop.c @@ -3743,6 +3743,8 @@ ipa_node_params_t::insert (cgraph_node *, ipa_node_params *info) { info->lattices = NULL; info->ipcp_orig_node = NULL; + info->known_csts = vNULL; + info->known_contexts = vNULL; info->analysis_done = 0; info->node_enqueued = 0; info->do_clone_for_all_contexts = 0;