我在使用ruby 1.9.3 preview1版本进行调试时遇到了一些问题。
我使用rvm使用以下命令安装了1.9.3：
rvm install 1.9.3 --reconfigure --debug -C --enable-pthread
用这个安装ruby-debug19：
gem install ruby-debug19 -- --with-ruby-include=$rvm_path/src/ruby-1.9.3-preview1
调试gem安装正常，但是当我打开一个带调试的控制台或尝试使用调试标志rails c --debug或rspec spec --debug时。我收到以下错误：
/Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:239:in `require': dlopen(/Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/ruby-debug-base19-0.11.25/lib/ruby_debug.bundle, 9): Symbol not found: _ruby_current_thread (LoadError)
Referenced from: /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/ruby-debug-base19-0.11.25/lib/ruby_debug.bundle
Expected in: flat namespace
in /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/ruby-debug-base19-0.11.25/lib/ruby_debug.bundle - /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/ruby-debug-base19-0.11.25/lib/ruby_debug.bundle
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:239:in `block in require'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:225:in `block in load_dependency'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:596:in `new_constants_in'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:225:in `load_dependency'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:239:in `require'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/ruby-debug-base19-0.11.25/lib/ruby-debug-base.rb:1:in `<top (required)>'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:239:in `require'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:239:in `block in require'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:225:in `block in load_dependency'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:596:in `new_constants_in'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:225:in `load_dependency'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:239:in `require'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/ruby-debug19-0.11.6/cli/ruby-debug.rb:5:in `<top (required)>'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@global/gems/bundler-1.0.17/lib/bundler/runtime.rb:68:in `require'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@global/gems/bundler-1.0.17/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@global/gems/bundler-1.0.17/lib/bundler/runtime.rb:66:in `each'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@global/gems/bundler-1.0.17/lib/bundler/runtime.rb:66:in `block in require'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@global/gems/bundler-1.0.17/lib/bundler/runtime.rb:55:in `each'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@global/gems/bundler-1.0.17/lib/bundler/runtime.rb:55:in `require'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@global/gems/bundler-1.0.17/lib/bundler.rb:120:in `require'
from /Users/mario/Work/project/config/application.rb:7:in `<top (required)>'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/railties-3.0.9/lib/rails/commands.rb:21:in `require'
from /Users/mario/.rvm/gems/ruby-1.9.3-preview1@project/gems/railties-3.0.9/lib/rails/commands.rb:21:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
答案 0 :(得分：13)
这是alternate solution I found in a Gist rafaeldx7。
基本上，解决方案是使用几个库的更新版本linecache19 v0.5.13＆amp; ruby-debug-base19 v0.11.26，但这些都不在RubyGem仓库中。
# Install with:
# bash < <(curl -L https://raw.github.com/gist/1333785)
#
# Reference: http://blog.wyeworks.com/2011/11/1/ruby-1-9-3-and-ruby-debug
echo "Installing ruby-debug with ruby-1.9.3-p0 ..."
curl -OL http://rubyforge.org/frs/download.php/75414/linecache19-0.5.13.gem
curl -OL http://rubyforge.org/frs/download.php/75415/ruby-debug-base19-0.11.26.gem
gem install linecache19-0.5.13.gem ruby-debug-base19-0.11.26.gem -- --with-ruby-include=$rvm_path/src/ruby-1.9.3-p0/
rm linecache19-0.5.13.gem ruby-debug-base19-0.11.26.gem
echo "Done."
答案 1 :(得分：7)
我建议改用pry;它似乎是ruby-debug等等。此外，我已经使用了require 'debug'一段时间，在答案的顶部提到（可能是人们正在推荐的内容），而且它让你放弃的范围通常不是你所期望的。再次，使用pry（并注意，如果你想要类似调试器的步进，你还需要this pry plugin，我还没有需要/测试过。）
Saw Rails with ruby-debugger throw 'Symbol not found: _ruby_current_thread (LoadError)'（摘要：你现在可以使用1.9s内置的调试器）刚刚找到以下内容之后：
由于我注意到您正试图让它与Rails一起使用，如果您正在使用bundler，您可以将其添加到您的gemfile中：
gem 'linecache19', :git => 'https://github.com/mark-moseley/linecache.git'
gem 'ruby-debug-base19', :git => 'https://github.com/mark-moseley/ruby-debug.git'
然后执行：
bundle config build.ruby-debug-base19 --with-ruby-include="$rvm_path/src/$(rvm tools strings)/"
bundle install
答案 2 :(得分：3)
我创建了一个Rubygems repo，其最新版本为1.9.3。
只需在Gemfile上添加此源代码行即可：
source 'http://rubydebug19.s3.amazonaws.com'
gem 'ruby-debug19', :group => :development
答案 3 :(得分：0)
这是一个临时解决方案：http://blog.wyeworks.com/2011/11/1/ruby-1-9-3-and-ruby-debug
摘自该网站：
首先下载linecache19-0.5.13.gem和 ruby-debug-base19-0.11.26.gem来自 http://rubyforge.org/frs/?group_id=8883，然后......
$ gem install linecache19-0.5.13.gem Building native extensions. This could take a while... Successfully installed linecache19-0.5.13 1 gem installed $ gem install ruby-debug-base19-0.11.26.gem -- --with-ruby-include=/Users/santiago/.rbenv/source/ruby-1.9.3-p0 Building native extensions. This could take a while... Successfully installed ruby-debug-base19-0.11.26 1 gem installed $ irb irb(main):001:0> require 'ruby-debug' => true
答案 4 :(得分：0)
以下是我使用Bundler 1.x和Ruby 1.9.3-p0（已发布的稳定版）的方法。希望这很快就会过时，但同时这是一个可行的解决方案，如果这是你需要的。
首先，将linecache和ruby-debug-base gems安装为系统gem。请注意，我从不同的地方得到了这些。
$ curl -OL http://rubyforge.org/frs/download.php/75415/ruby-debug-base19-0.11.26.gem
$ gem install linecache19-0.5.13.gem
$ gem install --pre ruby-debug-base19x # installs ruby-debug-base19x-0.11.30.pre4
接下来，为每个已安装的gem重新创建gem源：
$ mkdir ~/src/linecache19
$ cd /r193 # where your 1.9.3 is installed; system dependent
$ cd lib/ruby/gems/1.9.1 # where your gems are, should be the same
$ cp specifications/linecache19.gemspec ~src/linecache19
$ cp -r gems/linecache19-0.5.13/* ~/src/linecache19
$ mkdir ~/src/ruby-debug-base19x
$ cp specifications/ruby-debug-base19x-0.11.30.pre4.gemspec ~/src/ruby-debug-base19x
$ cp -r ruby-debug-base19x-0.11.30.pre4/* ~/src/ruby-debug-base19x
现在，您可以使用:path指令在Gemfile中引用这些目录。如果你有一个本地git存储库，你可以在那里添加提交那些目录并从你的Gemfile中引用它们，如下所示：
group :development do
gem 'linecache19', '~>0.5.12', :git => 'git://git-repo/ruby/linecache19.git'
gem 'ruby-debug-base19x', :git => 'git://git-repo/ruby/ruby-debug-base19x.git'
gem 'ruby-debug19', :require => 'ruby-debug'
gem 'ruby-prof'
end
答案 5 :(得分：0)
自1.9.3-p125以来，这些答案中的大多数已经过时了。
我在这里为ubuntu 11.10写了新的说明：https://gist.github.com/2218661