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authorydong10 <ydong10@6f19259b-4bc3-4df7-8a09-765794883524>2012-11-01 02:10:31 +0000
committerydong10 <ydong10@6f19259b-4bc3-4df7-8a09-765794883524>2012-11-01 02:10:31 +0000
commita56b6e03e22c4023fdf5b026b0fcb096d6a0f677 (patch)
tree6ed98050857852c967ed393602f2e949bdf93cb2 /MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Icmp.c
parent0d5df2aba72e7c8f2f172900fb7cfece27851a8f (diff)
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Add more check to make code more safely.
Signed-off-by: Eric Dong <eric.dong@intel.com> Reviewed-by: Ouyang Qian <ouyang.qian@intel.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13903 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Icmp.c')
-rw-r--r--MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Icmp.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Icmp.c b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Icmp.c
index a4d09ab..18cb9ff 100644
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Icmp.c
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Icmp.c
@@ -240,6 +240,7 @@ Ip4IcmpReplyEcho (
// update is omitted.
//
Icmp = (IP4_ICMP_QUERY_HEAD *) NetbufGetByte (Data, 0, NULL);
+ ASSERT (Icmp != NULL);
Icmp->Head.Type = ICMP_ECHO_REPLY;
Icmp->Head.Checksum = 0;
Icmp->Head.Checksum = (UINT16) (~NetblockChecksum ((UINT8 *) Icmp, Data->TotalSize));