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-rw-r--r--linuxthreads_db/td_thr_set_event.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/linuxthreads_db/td_thr_set_event.c b/linuxthreads_db/td_thr_set_event.c
index b90a6a6e82..205b445c79 100644
--- a/linuxthreads_db/td_thr_set_event.c
+++ b/linuxthreads_db/td_thr_set_event.c
@@ -1,5 +1,5 @@
 /* Enable specific event for thread.
-   Copyright (C) 1999, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
 
@@ -33,6 +33,11 @@ td_thr_set_event (th, event)
 
   LOG ("td_thr_set_event");
 
+  /* What shall we do if no thread descriptor exists but the user
+     wants to set an event?  */
+  if (th->th_unique == NULL)
+    return TD_NOTALLOC;
+
   /* Write the new value into the thread data structure.  */
   if (ps_pdread (th->th_ta_p->ph,
 		 ((char *) th->th_unique