diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1962979daa0..084da850770 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2003-05-12  Neil Booth  <neil@daikokuya.co.uk>
+
+	* alloc-pool.c (last_id): Put in ENABLE_CHECKING guards.
+
 2003-05-12  Andreas Schwab  <schwab@suse.de>
 
 	* config/ia64/ia64.c (ia64_function_ok_for_sibcall): Mark 'exp'
diff --git a/gcc/alloc-pool.c b/gcc/alloc-pool.c
index cb25b9ef061..87b05ccd7f3 100644
--- a/gcc/alloc-pool.c
+++ b/gcc/alloc-pool.c
@@ -71,8 +71,10 @@ typedef struct allocation_object_def
 #define USER_PTR_FROM_ALLOCATION_OBJECT_PTR(X)				\
    ((void *) (((allocation_object *) (X))->u.data))
 
+#ifdef ENABLE_CHECKING
 /* Last used ID.  */
 static ALLOC_POOL_ID_TYPE last_id;
+#endif
 
 /* Create a pool of things of size SIZE, with NUM in each block we
    allocate.  */