I’m trying to fix all dialyzer warnings in quantum for the next big release. There are two errors which I’m not able to solve.

The errors are:

lib/quantum.ex:69: The created fun has no local return
lib/quantum/normalizer.ex:37: Function normalize/2 has no local return

Here is the spec which I think is offending dialyzer.

# Quantum.Normalizer.normalize/2
@spec normalize(Job.t, config_full_notation | config_short_notation) :: Job.t | no_return

Involved Files:

• https://github.com/jshmrtn/quantum-elixir/blob/5ace42c7e88ecdb7eb6b0fdea768b430ed18b61d/lib/quantum/normalizer.ex
• https://github.com/jshmrtn/quantum-elixir/blob/5ace42c7e88ecdb7eb6b0fdea768b430ed18b61d/lib/quantum.ex

Steps tried to solve the issue:

• Added no_return to the specs return type
• Tried to locate a specific function that causes the problem

Both steps were not succesfull.

The current progress can be seen in this WIP PR: https://github.com/c-rack/quantum-elixir/pull/255