def test_par_parent_explicit_mp_fork_par_child(self):
        """
        Explicit use of multiprocessing fork context.
        Does this:
        1. Start with OpenMP
        2. Fork to processes using OpenMP (this is invalid)
        3. Joins fork
        4. Check the exception pushed onto the queue that is a result of
           catching SIGTERM coming from the C++ aborting on illegal fork
           pattern for GNU OpenMP
        """
        body = """if 1:
            X = np.arange(1000000.)
            Y = np.arange(1000000.)
            ctx = multiprocessing.get_context('fork')
            q = ctx.Queue()

            # Start OpenMP runtime on parent via parallel function
            Z = busy_func(X, Y, q)

            # fork() underneath with no exec, will abort
            proc = ctx.Process(target = busy_func, args=(X, Y, q))
            proc.start()
            proc.join()

            err = q.get()
            assert "Caught SIGTERM" in str(err)
        """
        runme = self.template % body
        cmdline = [sys.executable, '-c', runme]
        out, err = self.run_cmd(cmdline)
        if self._DEBUG:
            print(out, err)

        Explicit use of multiprocessing fork context.
        Does this:
        1. Start with OpenMP
        2. Fork to processes using OpenMP (this is invalid)
        3. Joins fork
        4. Check the exception pushed onto the queue that is a result of
           catching SIGTERM coming from the C++ aborting on illegal fork
           pattern for GNU OpenMP
        
numba/tests/test_parallel_backend.py