diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3823eb634ae5..581a3330fcf5 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2008-07-31  Steve Ellcey  <sje@cup.hp.com>
+
+	* expr.c (expand_assignment): Check for complete type.
+
 2008-07-31  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR debug/36977
diff --git a/gcc/expr.c b/gcc/expr.c
index 4984780fe325..eae8093d61ef 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -4280,6 +4280,7 @@ expand_assignment (tree to, tree from, bool nontemporal)
      needs to be done.  Handling this in the normal way is safe because no
      computation is done before the call.  */
   if (TREE_CODE (from) == CALL_EXPR && ! aggregate_value_p (from, from)
+      && COMPLETE_TYPE_P (TREE_TYPE (from))
       && TREE_CODE (TYPE_SIZE (TREE_TYPE (from))) == INTEGER_CST
       && ! ((TREE_CODE (to) == VAR_DECL || TREE_CODE (to) == PARM_DECL)
 	    && REG_P (DECL_RTL (to))))