re PR middle-end/59561 (warning: iteration 4 invokes undefined behavior)

	PR middle-end/59561
	* cfgloopmanip.c (copy_loop_info): If
	loop->warned_aggressive_loop_optimizations, make sure
	the flag is set in target loop too.

From-SVN: r207065

gcc/ChangeLog

+2014-01-25  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/59561
+	* cfgloopmanip.c (copy_loop_info): If
+	loop->warned_aggressive_loop_optimizations, make sure
+	the flag is set in target loop too.
+
 2014-01-24  Balaji V. Iyer  <balaji.v.iyer@intel.com>
 
 	* builtins.c (is_builtin_name): Renamed flag_enable_cilkplus to

gcc/cfgloopmanip.c

@@ -1022,6 +1022,8 @@ copy_loop_info (struct loop *loop, struct loop *target)
   target->any_estimate = loop->any_estimate;
   target->nb_iterations_estimate = loop->nb_iterations_estimate;
   target->estimate_state = loop->estimate_state;
+  target->warned_aggressive_loop_optimizations
+    |= loop->warned_aggressive_loop_optimizations;
 }
 
 /* Copies copy of LOOP as subloop of TARGET loop, placing newly