Index: head/lib/libthr/thread/thr_private.h
===================================================================
--- head/lib/libthr/thread/thr_private.h
+++ head/lib/libthr/thread/thr_private.h
@@ -719,6 +719,8 @@
 extern int		_libthr_debug;
 extern int		_thread_event_mask;
 extern struct pthread	*_thread_last_event;
+/* Used in symbol lookup of libthread_db */
+extern struct pthread_key	_thread_keytable[];
 
 /* List of all threads: */
 extern pthreadlist	_thread_list;
Index: head/lib/libthr/thread/thr_spec.c
===================================================================
--- head/lib/libthr/thread/thr_spec.c
+++ head/lib/libthr/thread/thr_spec.c
@@ -42,7 +42,8 @@
 
 #include "thr_private.h"
 
-static struct pthread_key _thread_keytable[PTHREAD_KEYS_MAX];
+/* Used in symbol lookup of libthread_db */
+struct pthread_key _thread_keytable[PTHREAD_KEYS_MAX];
 
 __weak_reference(_pthread_key_create, pthread_key_create);
 __weak_reference(_pthread_key_delete, pthread_key_delete);