[RFA] gdb/win32-nat.c Step the correct thread

["Pierre Muller" <muller@ics.u-strasbg.fr>]

  While trying to understand the SuspendThread
counting problems, I tried to single step after changing 
thread, and I noticed that the next event always 
brought me back to the main thread.

  There is a bug in the current win32-nat.c source
which places the trace bit always in the
main thread, while we should step the thread identified by 
inferior_ptid.

  This simple patch corrects this.

The testsuite runs with and without this patch
show no difference.

OK to check in?


2007-11-29  Pierre Muller  <muller@ics.u-strasbg.fr>

	* win32-nat.c (win32_resume): Set the trace bit
	in the thread identified by inferior_ptid.

Index: gdb/win32-nat.c
===================================================================
RCS file: /cvs/src/src/gdb/win32-nat.c,v
retrieving revision 1.140
diff -u -p -r1.140 win32-nat.c
--- gdb/win32-nat.c     24 Nov 2007 12:13:28 -0000      1.140
+++ gdb/win32-nat.c     29 Nov 2007 13:52:18 -0000
@@ -1225,7 +1225,7 @@ win32_resume (ptid_t ptid, int step, enu
               pid, step, sig));

   /* Get context for currently selected thread */
-  th = thread_rec (current_event.dwThreadId, FALSE);
+  th = thread_rec (PIDGET (inferior_ptid), FALSE);
   if (th)
     {
       if (step)