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dsr: Avoid possible segmentation fault in DsrRouting::DoDispose

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This commit is contained in:
Tom Henderson
2020-10-17 16:51:03 -07:00
parent 6a5055a2d8
commit d9f4d1e017
1 changed files with 7 additions and 3 deletions
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10
src/dsr/model/dsr-routing.cc
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@@ -557,12 +557,16 @@ DsrRouting::DoDispose (void)
Ptr<WifiNetDevice> wifi = dev->GetObject<WifiNetDevice> ();
if (wifi != 0)
{
Ptr<WifiMac> mac = wifi->GetMac ()->GetObject<AdhocWifiMac> ();
Ptr<WifiMac> mac = wifi->GetMac ();
if (mac != 0)
{
mac->TraceDisconnectWithoutContext ("TxErrHeader",
Ptr<AdhocWifiMac> adhoc = mac->GetObject<AdhocWifiMac> ();
if (adhoc)
{
adhoc->TraceDisconnectWithoutContext ("TxErrHeader",
m_routeCache->GetTxErrorCallback ());
m_routeCache->DelArpCache (m_ipv4->GetInterface (i)->GetArpCache ());
m_routeCache->DelArpCache (m_ipv4->GetInterface (i)->GetArpCache ());
}
}
}
}