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Bug 1240985 - Crash when trying to cancel while dispatching urgent message (r=dvander)

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This commit is contained in:
Bill McCloskey 2016-01-19 17:38:17 -08:00
parent e311ad2454
commit 25b5bed2af
1 changed files with 9 additions and 0 deletions
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9
ipc/glue/MessageChannel.cpp
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@ -2134,6 +2134,15 @@ MessageChannel::CancelCurrentTransaction()
{
MonitorAutoLock lock(*mMonitor);
if (mCurrentTransaction) {
if (DispatchingSyncMessagePriority() == IPC::Message::PRIORITY_URGENT ||
DispatchingAsyncMessagePriority() == IPC::Message::PRIORITY_URGENT)
{
MOZ_CRASH("Intentional crash: we're running a nested event loop "
"while processing an urgent message");
}
IPC_LOG("Cancel requested: current xid=%d", mCurrentTransaction);
MOZ_ASSERT(DispatchingSyncMessage());
CancelMessage *cancel = new CancelMessage();
cancel->set_transaction_id(mCurrentTransaction);
mLink->SendMessage(cancel);