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Extra runtime check in CanIOManager queue

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This commit is contained in:
Pavel Kirienko 2014-04-05 17:14:55 +04:00
parent e077bbf7a9
commit f32cd16f77
1 changed files with 5 additions and 0 deletions
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5
libuavcan/src/transport/uc_can_io.cpp
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@ -136,6 +136,11 @@ void CanTxQueue::push(const CanFrame& frame, MonotonicTime tx_deadline, Qos qos,
// Find a frame with lowest QoS
Entry* p = queue_.get();
if (p == NULL)
{
UAVCAN_TRACE("CanTxQueue", "Push rejected: Nothing to replace");
return;
}
Entry* lowestqos = p;
while (p)
{