re PR middle-end/32441 (ICE in expand_expr_real_1, at expr.c:7109)

2007-07-06  Ian Lance Taylor  <iant@google.com>
            Zack Weinberg  <zackw@panix.com>

	PR middle-end/32441
	* builtins.c (std_expand_builtin_va_start): Don't use make_tree.

Co-Authored-By: Zack Weinberg <zackw@panix.com>

From-SVN: r126424

gcc/ChangeLog

+2007-07-06  Ian Lance Taylor  <iant@google.com>
+            Zack Weinberg  <zackw@panix.com>
+
+	PR middle-end/32441
+	* builtins.c (std_expand_builtin_va_start): Don't use make_tree.
+
 2007-07-06  Richard Sandiford  <richard@codesourcery.com>
 
 	* config/sh/sh.md (*prefetch_i4): Disable for TARGET_VXWORKS_RTP.

gcc/builtins.c

@@ -4649,14 +4649,8 @@ std_build_builtin_va_list (void)
 void
 std_expand_builtin_va_start (tree valist, rtx nextarg)
 {
-  tree t;
-  t = make_tree (sizetype, nextarg);
-  t = fold_convert (ptr_type_node, t);
-
-  t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist, t);
-  TREE_SIDE_EFFECTS (t) = 1;
-
-  expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
+  rtx va_r = expand_expr (valist, NULL_RTX, VOIDmode, EXPAND_WRITE);
+  convert_move (va_r, nextarg, 0);
 }
 
 /* Expand EXP, a call to __builtin_va_start.  */