[PATCH] thread-db.c fix

[Mark Kettenis <kettenis@wins.uva.nl>]

The attached patch fixes a problem in thread-db.c:check_event().  See
comment for an explanation of the problem.

Checked in.

Mark


Index: ChangeLog
from  Mark Kettenis  <kettenis@gnu.org>

	* thread-db.c (check_event): Don't report an error if we encounter
	a thread creation event for a thread that's already in the thread
	list, since that may legitemately happen.  Instead only call
	attach_thread if it's not already in the thread list.

Index: thread-db.c
===================================================================
RCS file: /cvs/src/src/gdb/thread-db.c,v
retrieving revision 1.5
diff -u -p -r1.5 thread-db.c
--- thread-db.c 2001/03/01 01:39:21 1.5
+++ thread-db.c 2001/03/30 19:35:18
@@ -697,10 +697,11 @@ check_event (int pid)
 	error ("Thread creation event doesn't match breakpoint.");
 #endif
 
-      if (in_thread_list (pid))
-	error ("Spurious thread creation event.");
-
-      attach_thread (pid, msg.th_p, &ti, 1);
+      /* We may already know about this thread, for instance when the
+         user has issued the `info threads' command before the SIGTRAP
+         for hitting the thread creation breakpoint was reported.  */
+      if (! in_thread_list (pid))
+	attach_thread (pid, msg.th_p, &ti, 1);
       return;
 
     case TD_DEATH: