some question about serial package

[Ding ying]

Hi,everyone.
         In l4/pkg/,there is a serial package about operate on serial port
under L4/fiasco.But I couldn't run it propery on my machine.From adding some
test sentence,I  found the programme will dead in serial/lib/src/client.c
115 sentence:l4_ipc_wait(),but before dead,it could do two run
in:l_recv<--->goto l_recv part.I mean the l4_ipc_wait() could get two
message and do the relevant work,but when goto third run,it dead,and
client  invoking function  also dead.I can't find what cause the this.
          Is there anybody could help me?

Best Regards!
ying ding
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