import arrayfire as af
af.set_backend('opencl')
random_signal = af.random.randn(100)
test = af.signal.fft(random_signal)

---------------------------------------------------------------------------
RuntimeError Traceback (most recent call last)
<ipython-input-7-a744aa37e707> in <module>
----> 1 test = af.signal.fft(random_signal)
~/miniconda3/envs/af/lib/python3.7/site-packages/arrayfire/signal.py in fft(signal, dim0, scale)
 177 
 178 output = Array()
--> 179 safe_call(backend.get().af_fft(c_pointer(output.arr), signal.arr, c_double_t(scale), c_dim_t(dim0)))
 180 return output
 181 
~/miniconda3/envs/af/lib/python3.7/site-packages/arrayfire/util.py in safe_call(af_error)
 77 err_len = c_dim_t(0)
 78 backend.get().af_get_last_error(c_pointer(err_str), c_pointer(err_len))
---> 79 raise RuntimeError(to_str(err_str))
 80 
 81 def get_version():
RuntimeError: In function void opencl::fft_inplace(opencl::Array<T>&, int, bool) [with T = cl_float2]
In file src/backend/opencl/fft.cpp:

 BUILD LOG
************************************************
<kernel>:19:10: error: expected expression
(float2)(};
 ^
<kernel>:891:1: error: expected '}'
^
<kernel>:18:32: note: to match this '{'
__constant float2 twiddles[] = {
 ^
<kernel>:890:2: error: expected ';' after top level declarator
}
 ^
 ;
************************************************
FFTGeneratedStockhamAction::compileKernels failed