Aries with debug build doesn't boot any more. Program received signal SIGSEGV, Segmentation fault. 0xb303c0b2 in mozilla::net::GetAddrInfoOperator::Reply ( this=this@entry=0xad49b188, aSdRef=<optimized out>, aFlags=<optimized out>, aInterfaceIndex=<optimized out>, aErrorCode=0, aHostName=..., aAddress=..., aTTL=120) at /Users/gregor/moz/ib2g/netwerk/dns/mdns/libmdns/MDNSResponderOperator.cpp:746 746 MOZ_ASSERT(GetThread() == NS_GetCurrentThread()); (gdb) bt #0 0xb303c0b2 in mozilla::net::GetAddrInfoOperator::Reply ( this=this@entry=0xad49b188, aSdRef=<optimized out>, aFlags=<optimized out>, aInterfaceIndex=<optimized out>, aErrorCode=0, aHostName=..., aAddress=..., aTTL=120) at /Users/gregor/moz/ib2g/netwerk/dns/mdns/libmdns/MDNSResponderOperator.cpp:746 #1 0xb303c24e in mozilla::net::GetAddrInfoReplyRunnable::Run ( this=<optimized out>) at /Users/gregor/moz/ib2g/netwerk/dns/mdns/libmdns/MDNSResponderReply.cpp:257 #2 0xb2f9f73c in ProcessNextEvent (aResult=0xbef4a4df, aMayWait=false, this=0xb6825720) at /Users/gregor/moz/ib2g/xpcom/threads/nsThread.cpp:964 #3 nsThread::ProcessNextEvent (this=0xb6825720, aMayWait=<optimized out>, aResult=0xbef4a4df) at /Users/gregor/moz/ib2g/xpcom/threads/nsThread.cpp:849 #4 0xb2fba652 in NS_ProcessNextEvent (aThread=0xb6825720, aMayWait=aMayWait@entry=false) at /Users/gregor/moz/ib2g/xpcom/glue/nsThreadUtils.cpp:297 #5 0xb318dce8 in mozilla::ipc::MessagePump::Run (this=0xb680c7a8, aDelegate=0xb68371c0) at /Users/gregor/moz/ib2g/ipc/glue/MessagePump.cpp:95 #6 0xb31707bc in MessageLoop::RunInternal (this=this@entry=0xb68371c0) at /Users/gregor/moz/ib2g/ipc/chromium/src/base/message_loop.cc:234