Denial of Service via Unsafe Atom Interpolation

In Elixir, atoms are not garbage collected. As such, if user input is used to create atoms (as in :"foo#{bar}", or in :erlang.binary_to_atom), it may result in memory exhaustion. Prefer the String.to_existing_atom function for untrusted user input.

Atom interpolation checks can be ignored with the following command:

$ mix sobelow -i DOS.BinToAtom