[PATCH 1/3] Make remote follow fork 'Detaching' message match native

[Don Breazeal <donb@codesourcery.com>]

This patch fixes a couple of failures in gdb.base/foll-vfork.exp for
extended-remote targets.  The failures were the result of the
verbose/debug "Detaching..." messages in infrun.c:follow_fork_inferior
not matching what was expected in the extended-remote case.

The path modifies the ptids used in the messages to ensure that they
print "process nnn" instead of (possibly) "Thread nnn.nnn".  The
ptids for the native case are already in this form, so there the
change has no effect.  The ptids in the extended-remote case must be
reported by gdbserver in the (pid,pid,0) form in order to later
identify and remove new fork children that are reported prematurely
by remote_update_thread_list.  So here we generate process-style ptids
to get identical messages in both native and extended-remote cases.

OK?

thanks
--Don

gdb/
2015-05-22  Don Breazeal  <donb@codesourcery.com>

	* infrun.c (follow_fork_inferior): Ensure the use of
	process-style ptids (pid,0,0) in verbose/debug "Detaching"
	messages.

---
 gdb/infrun.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/gdb/infrun.c b/gdb/infrun.c
index 2f6bc41..d8eb0b0 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -445,11 +445,14 @@ holding the child stopped.  Try \"set detach-on-fork\" or \
 
 	  if (info_verbose || debug_infrun)
 	    {
+	      /* Ensure that we have a process ptid.  */
+	      ptid_t process_ptid = pid_to_ptid (ptid_get_pid (child_ptid));
+
 	      target_terminal_ours_for_output ();
 	      fprintf_filtered (gdb_stdlog,
 				_("Detaching after %s from child %s.\n"),
 				has_vforked ? "vfork" : "fork",
-				target_pid_to_str (child_ptid));
+				target_pid_to_str (process_ptid));
 	    }
 	}
       else
@@ -578,11 +581,14 @@ holding the child stopped.  Try \"set detach-on-fork\" or \
 	{
 	  if (info_verbose || debug_infrun)
 	    {
+	      /* Ensure that we have a process ptid.  */
+	      ptid_t process_ptid = pid_to_ptid (ptid_get_pid (child_ptid));
+
 	      target_terminal_ours_for_output ();
 	      fprintf_filtered (gdb_stdlog,
 				_("Detaching after fork from "
 				  "child %s.\n"),
-				target_pid_to_str (child_ptid));
+				target_pid_to_str (process_ptid));
 	    }
 
 	  target_detach (NULL, 0);
-- 
1.8.1.1