X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=blobdiff_plain;f=gcc%2Fcp%2Fpt.cc;h=79bc9c014c8504b7dddf094c4e2f36b4fa50d24b;hp=c7f4a95a7237ff91cbc0d81dc78de1ca35579b44;hb=396a4e76afec30d2461638f569cae18955eb4ad2;hpb=9410a52061ffe4a9e6ef8fd82f9c21d1874ff589

diff --git a/gcc/cp/pt.cc b/gcc/cp/pt.cc
index c7f4a95a723..79bc9c014c8 100644
--- a/gcc/cp/pt.cc
+++ b/gcc/cp/pt.cc
@@ -4106,10 +4106,14 @@ find_parameter_packs_r (tree *tp, int *walk_subtrees, void* data)
     case TAG_DEFN:
       t = TREE_TYPE (t);
       if (CLASS_TYPE_P (t))
-	/* Local class, need to look through the whole definition.  */
-	for (tree bb : BINFO_BASE_BINFOS (TYPE_BINFO (t)))
-	  cp_walk_tree (&BINFO_TYPE (bb), &find_parameter_packs_r,
-			ppd, ppd->visited);
+	{
+	  /* Local class, need to look through the whole definition.
+	     TYPE_BINFO might be unset for a partial instantiation.  */
+	  if (TYPE_BINFO (t))
+	    for (tree bb : BINFO_BASE_BINFOS (TYPE_BINFO (t)))
+	      cp_walk_tree (&BINFO_TYPE (bb), &find_parameter_packs_r,
+			    ppd, ppd->visited);
+	}
       else
 	/* Enum, look at the values.  */
 	for (tree l = TYPE_VALUES (t); l; l = TREE_CHAIN (l))