safe_yaml vs rubocop

[mfazekas]

In my rails project when i do rake rubocop it fails with An error occurred while Style/WordArray cop was inspecting .... When i do plain rubocop -d it work fine.

Some debugging showed this: My rails project uses rails_admin which loads safe_yaml. It looks safe_yaml disables regex loading of !ruby/regexp from yaml by default.

require 'yaml'
require 'safe_yaml'
YAML.safe_load("foo: !ruby/regexp '/bar/'\n",[Regexp])

Seems to be caused by this commit
36b857f

[mfazekas]

Questions:

• is this is a bug in safe_yaml (1.0.4)?
• do rubocop need to use safe_load, at all?
• would it be better for rubocop rake task to invoke rubocop in a subprocess to avoid execution in various potentially conflicting gems autoloaded rails

My workaround is:

  desc 'run rubocop'
  RuboCop::RakeTask.new(:rubocop) do |task|
    SafeYAML.whitelist!(Regexp) if Object.const_defined?('SafeYAML')
  end