re PR tree-optimization/22336 (ICE Segfault in record_block_change at function.c:5498)

2005-07-22  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
            Laurent GUERBY  <laurent@guerby.net>

        PR tree-optimization/22336
        * function.c (record_block_change): Check for
        cfun->ib_boundaries_block.

Co-Authored-By: Laurent GUERBY <laurent@guerby.net>

From-SVN: r102272

gcc/ChangeLog

+2005-07-22  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
+            Laurent GUERBY  <laurent@guerby.net>
+
+        PR tree-optimization/22336
+        * function.c (record_block_change): Check for 
+        cfun->ib_boundaries_block.
+	
 2005-07-21  James A. Morrison  <phython@gcc.gnu.org>
 
 	* fold-const.c (fold_unary): Don't strip signed nops from ABS_EXPRs.

gcc/function.c

@@ -5492,6 +5492,9 @@ record_block_change (tree block)
   if (!block)
     return;
 
+  if(!cfun->ib_boundaries_block)
+    return;
+
   last_block = VARRAY_TOP_TREE (cfun->ib_boundaries_block);
   VARRAY_POP (cfun->ib_boundaries_block);
   n = get_max_uid ();