Slither crashes generating SSA with array of size 1 specified by literal

[Xenomega]

The following contract will cause slither to throw an error:

contract C {
    function f() public {
        uint8[1] memory x = [ 77 ];
    }
}

It seems creating an array with size 1, with the single element specified by a literal causes slither to fail to generate SSA. If the element is specified as a variable in the array, it will not throw an error. This was also tested with a bool[1] memory x = [ false ]; and threw an error as well.

Stack trace:

ERROR:root:Traceback (most recent call last):
  File "c:\users\vyper\documents\github\slither\slither\solc_parsing\slitherSolc.py", line 341, in _convert_to_slithir
    contract.convert_expression_to_slithir()
  File "c:\users\vyper\documents\github\slither\slither\solc_parsing\declarations\contract.py", line 386, in convert_expression_to_slithir
    func.generate_slithir_ssa(all_ssa_state_variables_instances)
  File "c:\users\vyper\documents\github\slither\slither\solc_parsing\declarations\function.py", line 935, in generate_slithir_ssa
    add_ssa_ir(self, all_ssa_state_variables_instances)
  File "c:\users\vyper\documents\github\slither\slither\slithir\utils\ssa.py", line 123, in add_ssa_ir
    [])
  File "c:\users\vyper\documents\github\slither\slither\slithir\utils\ssa.py", line 295, in generate_ssa_irs
    visited)
  File "c:\users\vyper\documents\github\slither\slither\slithir\utils\ssa.py", line 285, in generate_ssa_irs
    new_ir.lvalue.add_refers_to(new_ir.rvalue)
  File "c:\users\vyper\documents\github\slither\slither\slithir\variables\local_variable.py", line 56, in add_refers_to
    self._refers_to.add(variable)
TypeError: unhashable type: 'Constant'