diff --git a/gdb/gnu-v3-abi.c b/gdb/gnu-v3-abi.c
index a79a6a9..5ce2fb5 100644
--- a/gdb/gnu-v3-abi.c
+++ b/gdb/gnu-v3-abi.c
@@ -1282,6 +1282,9 @@ gnuv3_pass_by_reference (struct type *type)
       && TYPE_CODE (type) != TYPE_CODE_UNION)
     return 0;
 
+  if (gnuv3_dynamic_class (type))
+    return 1;
+
   for (fieldnum = 0; fieldnum < TYPE_NFN_FIELDS (type); fieldnum++)
     for (fieldelem = 0; fieldelem < TYPE_FN_FIELDLIST_LENGTH (type, fieldnum);
 	 fieldelem++)