config.load_paths should also be frozen

On Rails::Initializer, configuration.load_once_paths is frozen but config.load_paths is not.

We need to freeze them so future modifications will fail rather than do nothing mysteriously. For example, I was changing the variable on my environment/development.rb and the path I was setting was never loaded.

To fix, just add the line:

configuration.load_paths.freeze

To railties/lib/initializer.rb, method set_autoload_paths, around line 214.

So we will have:

def set_autoload_paths

Dependencies.load_paths = configuration.load_paths.uniq

Dependencies.load_once_paths = configuration.load_once_paths.uniq

extra = Dependencies.load_once_paths - Dependencies.load_paths

unless extra.empty?

abort <

load_once_paths must be a subset of the load_paths.

Extra items in load_once_paths: #{extra * ','}

end_error

end

configuration.load_once_paths.freeze

end