Rails 3.1 and Ruby 1.9.3p125: ruby-debug19 still crashes with “Symbol not found: _ruby_threadptr_data_type” [duplicate]

Answer 1

I've been having similar problems using Rails 3.2 with Ruby 1.9.3p0 debugging in Aptana.
For me, new ruby-debug-base193 does not compile. But what works fine is a fix that has been posted elsewhere:

Gemfile:
gem 'ruby-debug-ide19'
gem 'ruby-debug-base19'

And then providing the missing is_binary_data? method somewhere. I put it in my Rails application.rb file like so:

class String
  def is_binary_data?
    ( self.count( "^ -~", "^\r\n" ).fdiv(self.size) > 0.3 || self.index( "\x00" ) ) unless empty?
  end
end