Function of len() is invalid to dynamic share array

[mantouRobot]

Hi~
I found the function of len() is invalid to dynamic share array. Here is my code snippet:

@cuda.jit
def kern_fun()
    dynamic_share_array = cuda.shared.array(0, numba.float32)
    fill_value(dynamic_share_array)
    print(len(dynamic_share_array))

main():
    kern_fun[1, 10, 0, 100]()

the output of print is '0'. Any ideas?

[mantouRobot]

Also, I found the negative index of dynamic share array is invalid.

[gmarkall]

This may be fixed by #5099 - in any case, it won't work without it.

[gmarkall]

This is now working, probably because of #5099

@cuda.jit
def kern_fun():
    dsa = cuda.shared.array(0, numba.float32)
    print(len(dsa))

kern_fun[1, 1, 0, 100]()

prints:

25

Negative indices also seem to be working (from a quick check):

@cuda.jit
def fill_last(x):
    dsa = cuda.shared.array(0, numba.float64)
    dsa[-1] = 99
    i = cuda.grid(1)
    x[i] = dsa[i]

x = np.zeros(10)
fill_last[1, 10, 0, 80](x)
print(x)

prints:

array([ 0., 0., 0., 0., 0., 0., 0., 0., 0., 99.])

I'll suggest leaving this issue open as I'd like to make a PR for a few test cases to check that length and negative indexing is robust.