diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2944d20b64d..e03adcc4af2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2008-03-01  Alexandre Oliva  <aoliva@redhat.com>
+
+	* tree-flow-inline.h (next_readonly_imm_use): Return
+	NULL_USE_OPERAND_P after the end.
+
 2008-03-01  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/35411
diff --git a/gcc/tree-flow-inline.h b/gcc/tree-flow-inline.h
index 1afbd1a8fc7..79071a90bea 100644
--- a/gcc/tree-flow-inline.h
+++ b/gcc/tree-flow-inline.h
@@ -512,7 +512,7 @@ next_readonly_imm_use (imm_use_iterator *imm)
 
   imm->imm_use = old->next;
   if (end_readonly_imm_use_p (imm))
-    return old;
+    return NULL_USE_OPERAND_P;
   return imm->imm_use;
 }