From 35b707c953cb6821e18cdb7023bd3515f7b07f45 Mon Sep 17 00:00:00 2001
From: oldfaber <oldfaber@gmail.com>
Date: Fri, 29 Jun 2012 15:43:41 +0200
Subject: [PATCH] Fix: CreateFile() does not set errno. Use GetLastError().

---
 src/modbus-rtu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/modbus-rtu.c b/src/modbus-rtu.c
index c41110e..37ff71a 100644
--- a/src/modbus-rtu.c
+++ b/src/modbus-rtu.c
@@ -437,8 +437,8 @@ static int _modbus_rtu_connect(modbus_t *ctx)
 
     /* Error checking */
     if (ctx_rtu->w_ser.fd == INVALID_HANDLE_VALUE) {
-        fprintf(stderr, "ERROR Can't open the device %s (%s)\n",
-                ctx_rtu->device, strerror(errno));
+        fprintf(stderr, "ERROR Can't open the device %s (LastError %d)\n",
+                ctx_rtu->device, (int)GetLastError());
         return -1;
     }
 
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