--- gcc/reload1.c.jj	2013-01-11 09:03:17.000000000 +0100
+++ gcc/reload1.c	2013-01-21 12:47:01.091040655 +0100
@@ -468,8 +468,11 @@ init_reload (void)
     }
 
   /* Initialize obstack for our rtl allocation.  */
-  gcc_obstack_init (&reload_obstack);
-  reload_startobj = XOBNEWVAR (&reload_obstack, char, 0);
+  if (reload_startobj == NULL)
+    {
+      gcc_obstack_init (&reload_obstack);
+      reload_startobj = XOBNEWVAR (&reload_obstack, char, 0);
+    }
 
   INIT_REG_SET (&spilled_pseudos);
   INIT_REG_SET (&changed_allocation_pseudos);