diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e8ff75e8be1..1a21beac63e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2011-04-28  Richard Guenther  <rguenther@suse.de>
+
+	PR bootstrap/48804
+	Revert
+	2011-04-28  Richard Guenther  <rguenther@suse.de>
+
+	* tree-ssa-structalias.c (solve_constraints): Build succ graph
+	as late as possible.
+ 
 2011-04-28  Richard Guenther  <rguenther@suse.de>
 
 	* tree-ssa-structalias.c (dump_constraint): Don't end the line.
diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c
index 0d6e098028b..3aab8ee7a3d 100644
--- a/gcc/tree-ssa-structalias.c
+++ b/gcc/tree-ssa-structalias.c
@@ -6359,10 +6359,11 @@ solve_constraints (void)
     fprintf (dump_file, "Rewriting constraints and unifying "
 	     "variables\n");
   rewrite_constraints (graph, si);
-  free_var_substitution_info (si);
 
   build_succ_graph ();
 
+  free_var_substitution_info (si);
+
   /* Attach complex constraints to graph nodes.  */
   move_complex_constraints (graph);