Refine code to make it more safely.

[mirror_edk2.git] / MdeModulePkg / Universal / Network / Ip4Dxe / Ip4If.c

diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c
index e4ab17a37ea555a9c10206f8e474d0c47fc41bed..3c29f75f886d29891fa6d32ea60847bb54214396 100644 (file)
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c
@@ -1,7 +1,7 @@
 /** @file\r
   Implement IP4 pesudo interface.\r
   \r
-Copyright (c) 2005 - 2013, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2005 - 2014, Intel Corporation. All rights reserved.<BR>\r
 This program and the accompanying materials\r
 are licensed and made available under the terms and conditions of the BSD License\r
 which accompanies this distribution.  The full text of the license may be found at\r
@@ -582,6 +582,7 @@ Ip4SetAddress (
 \r
   Type                      = NetGetIpClass (IpAddr);\r
   Len                       = NetGetMaskLength (SubnetMask);\r
+  ASSERT (Len >= 1);\r
   Netmask                   = gIp4AllMasks[MIN ((Len - 1), Type << 3)];\r
   Interface->NetBrdcast     = (IpAddr | ~Netmask);\r
 \r