stor-layout.c (place_field): Treat overflowing DECL_SIZE_UNIT as if size were variable.

	* stor-layout.c (place_field): Treat overflowing DECL_SIZE_UNIT
	as if size were variable.

From-SVN: r38307

gcc/ChangeLog

 Sat Dec 16 10:41:11 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
 
+	* stor-layout.c (place_field): Treat overflowing DECL_SIZE_UNIT
+	as if size were variable.
+
 	* expmed.c (expand_mult): Write REG_EQUAL note with proper mode.
 
 2000-12-16  Neil Booth  <neil@daikokuya.demon.co.uk>

gcc/stor-layout.c

@@ -893,7 +893,8 @@ place_field (rli, field)
      is printed in finish_struct.  */
   if (DECL_SIZE (field) == 0)
     /* Do nothing.  */;
-  else if (! TREE_CONSTANT (DECL_SIZE_UNIT (field)))
+  else if (TREE_CODE (DECL_SIZE_UNIT (field)) != INTEGER_CST
+	   || TREE_CONSTANT_OVERFLOW (DECL_SIZE_UNIT (field)))
     {
       rli->offset
 	= size_binop (PLUS_EXPR, rli->offset,