[Bug ipa/94947] [8/9/10/11 Regression] -fipa-pta + pthread_once crash since r6-5684-g47e5754e17e9ac3b

["rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94947

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> In fact this situation doesn't seem to be handled at all - global variables
> are still an afterthought in IPA-PTA it seems.  Needs more work than a
> simple fix.

Hum, actually it's a simple bug and the following fixes it.

diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c
index 416a26c996c..16a2b53c2b7 100644
--- a/gcc/tree-ssa-structalias.c
+++ b/gcc/tree-ssa-structalias.c
@@ -8187,8 +8187,8 @@ ipa_pta_execute (void)

       /* For the purpose of IPA PTA unit-local globals are not
          escape points.  */
-      bool nonlocal_p = (var->used_from_other_partition
-                        || var->externally_visible
+      bool nonlocal_p = (var->externally_visible_p ()
+                        || var->used_from_other_partition
                         || var->force_output);
       var->call_for_symbol_and_aliases (refered_from_nonlocal_var,
                                        &nonlocal_p, true);