tree-ssa-loop-manip.c (ip_normal_pos): Check if last stmt is NULL.

2007-05-01  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-loop-manip.c (ip_normal_pos): Check if last stmt
 	is NULL.

From-SVN: r124329

gcc/ChangeLog

+2007-05-01  Richard Guenther  <rguenther@suse.de>
+
+	* tree-ssa-loop-manip.c (ip_normal_pos): Check if last stmt
+	is NULL.
+
 2007-05-01  Joseph Myers  <joseph@codesourcery.com>
 
 	* config/rs6000/libgcc-ppc-glibc.ver (__gcc_qgt): Fix typo.

gcc/tree-ssa-loop-manip.c

@@ -505,7 +505,8 @@ ip_normal_pos (struct loop *loop)
 
   bb = single_pred (loop->latch);
   last = last_stmt (bb);
-  if (TREE_CODE (last) != COND_EXPR)
+  if (!last
+      || TREE_CODE (last) != COND_EXPR)
     return NULL;
 
   exit = EDGE_SUCC (bb, 0);