From 8bbed40521ffa3852a201d249162567ee6d5b8ec Mon Sep 17 00:00:00 2001
From: Michael Snyder <msnyder@vmware.com>
Date: Tue, 31 Aug 2010 19:31:00 +0000
Subject: [PATCH] 2010-08-31  Michael Snyder 
 <msnyder@msnyder-server.eng.vmware.com>

	* infrun.c (set_exec_direction_func): Error out if target does not
	support reverse execution.
---
 gdb/ChangeLog | 5 +++++
 gdb/infrun.c  | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 8f614410a7..1febb54aad 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2010-08-31  Michael Snyder  <msnyder@msnyder-server.eng.vmware.com>
+
+	* infrun.c (set_exec_direction_func): Error out if target does not
+	support reverse execution.
+
 2010-08-31  Jan Kratochvil  <jan.kratochvil@redhat.com>
 
 	Make linux_get_siginfo_type `type *' unique.
diff --git a/gdb/infrun.c b/gdb/infrun.c
index dd89e788ea..8b1f82a7f8 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -6437,6 +6437,11 @@ set_exec_direction_func (char *args, int from_tty,
       else if (!strcmp (exec_direction, exec_reverse))
 	execution_direction = EXEC_REVERSE;
     }
+  else
+    {
+      exec_direction = exec_forward;
+      error (_("Target does not support this operation."));
+    }
 }
 
 static void