1 files changed, 71 insertions, 0 deletions
diff --git a/erts/emulator/test/driver_SUITE_data/otp_6879_drv.c b/erts/emulator/test/driver_SUITE_data/otp_6879_drv.c
new file mode 100644
index 0000000000..8c0a9aadfd
--- /dev/null
+++ b/erts/emulator/test/driver_SUITE_data/otp_6879_drv.c
@@ -0,0 +1,71 @@
+/* ``The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved via the world wide web at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+ * Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+ * AB. All Rights Reserved.''
+ * 
+ *     $Id$
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include "erl_driver.h"
+
+static int call(ErlDrvData drv_data,
+		unsigned int command,
+		char *buf, int len,
+		char **rbuf, int rlen,
+		unsigned int *flags);
+
+static ErlDrvEntry otp_6879_drv_entry = { 
+    NULL /* init */,
+    NULL /* start */,
+    NULL /* stop */,
+    NULL /* output */,
+    NULL /* ready_input */,
+    NULL /* ready_output */,
+    "otp_6879_drv",
+    NULL /* finish */,
+    NULL /* handle */,
+    NULL /* control */,
+    NULL /* timeout */,
+    NULL /* outputv */,
+    NULL /* ready_async */,
+    NULL /* flush */,
+    call,
+    NULL /* event */,
+    ERL_DRV_EXTENDED_MARKER,
+    ERL_DRV_EXTENDED_MAJOR_VERSION,
+    ERL_DRV_EXTENDED_MINOR_VERSION,
+    ERL_DRV_FLAG_USE_PORT_LOCKING,
+    NULL /* handle2 */,
+    NULL /* handle_monitor */
+};
+
+DRIVER_INIT(otp_6879_drv)
+{
+    return &otp_6879_drv_entry;
+}
+
+
+static int call(ErlDrvData drv_data,
+		unsigned int command,
+		char *buf, int len,
+		char **rbuf, int rlen,
+		unsigned int *flags)
+{
+    /* echo call */
+    if (len > rlen)
+	*rbuf = driver_alloc(len);
+    memcpy((void *) *rbuf, (void *) buf, len);
+    return len;
+}