cselib.c (discard_useless_values): Clear out value pointer pointing to…

cselib.c (discard_useless_values): Clear out value pointer pointing to datastructure to be recycled.


	* cselib.c (discard_useless_values):  Clear out value pointer pointing
	to datastructure to be recycled.

From-SVN: r76666

gcc/ChangeLog

+2004-01-26  Jan Hubicka  <jh@suse.cz>
+
+	* cselib.c (discard_useless_values):  Clear out value pointer pointing
+	to datastructure to be recycled.
+
 2004-01-25  Jan Hubicka  <jh@suse.cz>
 
 	* genextract.c (main): Do not output the memset when not checking.

gcc/cselib.c

@@ -332,6 +332,7 @@ discard_useless_values (void **x, void *info ATTRIBUTE_UNUSED)
 
   if (v->locs == 0)
     {
+      CSELIB_VAL_PTR (v->u.val_rtx) = NULL;
       htab_clear_slot (hash_table, x);
       unchain_one_value (v);
       n_useless_values--;