loop.c (basic_induction_var): Typo NULL_RTX -> NULL.

        * loop.c (basic_induction_var): Typo NULL_RTX -> NULL.
        (strength_reduce): Release the varrays from the no-bivs early exit.

        * reload1.c (order_regs_for_reload): Init hard_reg_n_uses before
        the loop over the registers.

        * tree.c (save_tree_status): Set maybepermanent_firstobj NULL
        for a new obstack.
        (restore_tree_status): Check that instead when freeing the obstack.

From-SVN: r29270

1 files changed, 3 insertions, 4 deletions

diff --git a/gcc/tree.c b/gcc/tree.c
index 16d3f4d..2dc6361 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -365,8 +365,7 @@ save_tree_status (p)
   function_maybepermanent_obstack
     = (struct obstack *) xmalloc (sizeof (struct obstack));
   gcc_obstack_init (function_maybepermanent_obstack);
-  maybepermanent_firstobj
-    = (char *) obstack_finish (function_maybepermanent_obstack);
+  maybepermanent_firstobj = NULL;
 
   function_obstack = (struct obstack *) xmalloc (sizeof (struct obstack));
   gcc_obstack_init (function_obstack);
@@ -399,9 +398,9 @@ restore_tree_status (p)
   obstack_free (&temporary_obstack, temporary_firstobj);
   obstack_free (&momentary_obstack, momentary_function_firstobj);
 
-  obstack_free (function_obstack, 0);
+  obstack_free (function_obstack, NULL);
 
-  if (obstack_empty_p (function_maybepermanent_obstack))
+  if (maybepermanent_firstobj == NULL)
     free (function_maybepermanent_obstack);
   free (function_obstack);