Gnuradio Python代码使Process以退出代码139完成（被信号11：SIGSEGV中断）

Question

我在python中连接了几个gnuradio自定义块。执行后，程序立即终止：

Process finished with exit code 139 (interrupted by signal 11: SIGSEGV)

代码复制如下。我似乎无法弄清楚这里发生了什么。如果有两个不同的类自定义块，则存在相同的问题。

from gnuradio import gr, blocks, analog
import numpy as np


class Block1(gr.sync_block):

    def __init__(self):
        gr.sync_block.__init__(self, name="block 1", in_sig=[np.float32], out_sig=[np.float32])

    def work(self, input_items, output_items):

        output_items[0][:] = input_items[0]

        return len(output_items[0])


class MyTopBlock(gr.top_block):

    def __init__(self):
        gr.top_block.__init__(self)

        src = analog.sig_source_f(100000, analog.GR_COS_WAVE, 100, 1)
        throttle = blocks.throttle(gr.sizeof_gr_float, 32000, True)
        b1 = Block1()
        b2 = Block1()
        self.connect(src, throttle, b1, b2, blocks.null_sink(gr.sizeof_float))

tb = MyTopBlock()
tb.run()