Pry threading test

pry-threads.rb

require 'rubygems'
require 'pry'
#require 'rbtrace'
puts $$

threads = []
threads << Thread.new do
  loop do
    puts "Thread 1"
    sleep 1
  end
end

threads << Thread.new do
  pry
end   

threads << Thread.new do
  loop do
    puts "Thread 2"
    sleep 1
  end
end

threads.each {|t| t.join }

I compiled 1.9.3 off the branch by hand using gcc not llvm-gcc, I don't use RVM and I ran distclean since upgrading to OS X 10.7.

If I leave either ruby or ruby19 running it'll continue forever

$ GEM_HOME=~/tmp/gems gem list pry

*** LOCAL GEMS ***

pry (0.9.3)

$ curl -s https://raw.github.com/gist/1018994/0bf2737a6ac05e3be254cbe9924bcd65e9a01b57/pry-threads.rb | GEM_HOME=~/tmp/gems ruby
1563
Thread 1
Thread 2

Thread 1
Thread 2
Thread 2
Thread 1
^C-:25:in `join': Interrupt
    from -:25
    from -:25:in `each'
    from -:25

$ curl -s https://raw.github.com/gist/1018994/0bf2737a6ac05e3be254cbe9924bcd65e9a01b57/pry-threads.rb | GEM_HOME=~/tmp/gems ruby19
1570
Thread 1

Thread 2
Thread 1Thread 2

Thread 2Thread 1

Thread 1
Thread 2
^C-:25:in `join': Interrupt
    from -:25:in `block in <main>'
    from -:25:in `each'
    from -:25:in `<main>'

Another way to fix this with rvm:

rvm pkg install readline
rvm install 1.9.2 --with-readline-dir=$rvm_path/usr

Also works for other versions of Ruby.