expr.c (store_constructor): Restore sanity check on the size of the type before clearing.

	* expr.c (store_constructor): Restore sanity check on
	the size of the type before clearing.

From-SVN: r82335

gcc/ChangeLog

+2004-05-27  Olivier Hainque  <hainque@act-europe.fr>
+
+	* expr.c (store_constructor): Restore sanity check on
+	the size of the type before clearing.
+
 2004-05-27  Jan Hubicka  <jh@suse.cz>
 
 	* cfgbuild.c (control_flow_insn_p):  Notice noreturn call

gcc/expr.c

@@ -4673,8 +4673,9 @@ store_constructor (tree exp, rtx target, int cleared, HOST_WIDE_INT size)
 	 clear the whole structure first.  Don't do this if TARGET is a
 	 register whose mode size isn't equal to SIZE since clear_storage
 	 can't handle this case.  */
-      else if (((list_length (CONSTRUCTOR_ELTS (exp)) != fields_length (type))
-		|| mostly_zeros_p (exp))
+      else if (size > 0
+	       && ((list_length (CONSTRUCTOR_ELTS (exp)) != fields_length (type))
+		   || mostly_zeros_p (exp))
 	       && (GET_CODE (target) != REG
 		   || ((HOST_WIDE_INT) GET_MODE_SIZE (GET_MODE (target))
 		       == size)))