[Discuss-gnuradio] Segmentation fault

[Manav Rohil]

I am getting segmentation fault with the following...

src_data = (0xff,)
        src = gr.vector_source_b(src_data,False)
  #expected_results = (1,0,0,0,0,0,0,0)
        op = gr.packed_to_unpacked_bb(1, gr.GR_MSB_FIRST)
  op1= gr.head (gr.sizeof_char, 1)
  tb.connect(src,op,op1)
        dst = gr.vector_sink_b()
  tb.connect(op,dst)
  tb.connect(op,
                     gr.file_sink(gr.sizeof_char,
"tx_bytes2chunks.dat"))
  tb.connect(op1,
                     gr.file_sink(gr.sizeof_char, "tx_bytes2bits.dat"))

All that i m trying to do is extract the 1st bit of the vector.
Need help urgently.Am new to GNU radio
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