weird.cr

abstract class Trashman::BaseRecord
  abstract def callstack : CallStack
  abstract def allocations : Uint64
  abstract def deallocations : Uint64
  abstract def untrack : Void
  abstract def type_str : String
end

module Trashman::Statistics
  @@records = [] of BaseRecord
  # ... Snip
  
  def self.on_finalize(ref)
    @@records.each do |record|
      record.untrack
    end
  end
  
  # ... Snip
end

# Error: undefined method 'Trashman::BaseRecord#untrack()'