[PATCH] Fix check for resumed threads

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

lin_lwp_wait() may be called when the list of LWPs is still empty
(this will add the LWP for which we receive an event to the list
automatically.  This happens when debugging a statically linked
program.

Thanks to Ken Whaley for reporting this.

Mark

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

	* lin-lwp.c (lin_lwp_wait): Avoid check for resumed LWPs if there
	are no registered LWPs yet.

Index: lin-lwp.c
===================================================================
RCS file: /cvs/src/src/gdb/lin-lwp.c,v
retrieving revision 1.28
diff -u -p -r1.28 lin-lwp.c
--- lin-lwp.c 2001/07/12 19:37:36 1.28
+++ lin-lwp.c 2001/07/13 12:03:05
@@ -908,8 +908,9 @@ lin_lwp_wait (ptid_t ptid, struct target
 
  retry:
 
-  /* Make sure there is at least one thread that has been resumed.  */
-  gdb_assert (iterate_over_lwps (resumed_callback, NULL));
+  /* Make sure there is at least one LWP that has been resumed, at
+     least if there are any LWPs at all.  */
+  gdb_assert (num_lwps == 0 || iterate_over_lwps (resumed_callback, NULL));
 
   /* First check if there is a LWP with a wait status pending.  */
   if (pid == -1)