1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 43a6bc3..95ae8eb 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -11025,7 +11025,12 @@ xref_basetypes (tree ref, tree base_list)
 
   /* The binfo slot should be empty, unless this is an (ill-formed)
      redefinition.  */
-  gcc_assert (!TYPE_BINFO (ref) || TYPE_SIZE (ref));
+  if (TYPE_BINFO (ref) && !TYPE_SIZE (ref))
+    {
+      error ("redefinition of %q#T", ref);
+      return false;
+    }
+
   gcc_assert (TYPE_MAIN_VARIANT (ref) == ref);
 
   binfo = make_tree_binfo (max_bases);