re PR middle-end/23944 (segv in fold_indirect_ref_1 in fold-const.c:11505)

2005-09-18  Richard Guenther  <rguenther@suse.de>

	PR middle-end/23944
	* gimplify.c (fold_indirect_ref_rhs): Fix thinko in
	fallback.

	* gcc.c-torture/compile/pr23944.c: New testcase.

From-SVN: r104402

gcc/ChangeLog

+2005-09-18  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/23944
+	* gimplify.c (fold_indirect_ref_rhs): Fix thinko in
+	fallback.
+
 2005-09-18  Paul Brook  <paul@codesourcery.com>
 
 	* config/m68k/fpgnuib.c (__floatsidf): Don't rely on signed overflow.

gcc/gimplify.c

@@ -2950,9 +2950,10 @@ fold_indirect_ref_rhs (tree t)
     {
       tree type_domain;
       tree min_val = size_zero_node;
+      tree osub = sub;
       sub = fold_indirect_ref_rhs (sub);
       if (! sub)
-	sub = build1 (INDIRECT_REF, TREE_TYPE (subtype), sub);
+	sub = build1 (INDIRECT_REF, TREE_TYPE (subtype), osub);
       type_domain = TYPE_DOMAIN (TREE_TYPE (sub));
       if (type_domain && TYPE_MIN_VALUE (type_domain))
         min_val = TYPE_MIN_VALUE (type_domain);

gcc/testsuite/ChangeLog

+2005-09-18  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/23944
+	* gcc.c-torture/compile/pr23944.c: New testcase.
+
 2005-09-18  Erik Edelmann  <erik.edelmann@iki.fi>
 
 	PR fortran/15975

gcc/testsuite/gcc.c-torture/compile/pr23944.c

+float f(float src[][4])
+{
+ return *(src[3]);
+}