Index: apr_pools.c
===================================================================
--- apr_pools.c	(revision 536939)
+++ apr_pools.c	(working copy)
@@ -39,6 +39,7 @@
 #include <unistd.h>     /* for getpid */
 #endif
 
+static apr_pool_t  *global_pool = NULL;
 
 /*
  * Magic numbers
@@ -116,6 +117,7 @@
 
     memset(new_allocator, 0, SIZEOF_ALLOCATOR_T);
     new_allocator->max_free_index = APR_ALLOCATOR_MAX_FREE_UNLIMITED;
+    new_allocator->owner = global_pool;
 
     *allocator = new_allocator;
 
@@ -852,7 +854,7 @@
     pool->owner_proc = (apr_os_proc_t)getnlmhandle();
 #endif /* defined(NETWARE) */
 
-    if ((pool->parent = parent) != NULL) {
+    if ((pool->parent = parent) != NULL && allocator->owner) {
 #if APR_HAS_THREADS
         apr_thread_mutex_t *mutex;