[Bug c++/33955] internal compiler error: in dependent_type_p, at cp/pt.c:15245 (vararg template problem)

[dgregor at gcc dot gnu dot org]

------- Comment #3 from dgregor at gcc dot gnu dot org  2007-10-31 12:23 -------
This tiny patch should fix the problem. We weren't digging into TYPENAME_TYPEs
deep enough to find all of the parameter packs. The patch fixes both the
original test case and the reduced one. However, I can't test it in isolation
at the moment.

Index: pt.c
===================================================================
--- pt.c        (revision 129773)
+++ pt.c        (working copy)
@@ -2505,6 +2505,12 @@ find_parameter_packs_r (tree *tp, int *w
       *walk_subtrees = 0;
       return NULL_TREE;

+    case TYPENAME_TYPE:
+      cp_walk_tree (&TYPENAME_TYPE_FULLNAME (t), &find_parameter_packs_r,
+                   ppd, ppd->visited);
+      *walk_subtrees = 0;
+      return NULL_TREE;
+
     case TYPE_PACK_EXPANSION:
     case EXPR_PACK_EXPANSION:
       *walk_subtrees = 0;


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33955