Ruby: stack level too deep (SystemStackError)

问题:

Ruby is crashing in Cygwin for rails and bundler.

$ ruby -v ruby 1.9.3p374 (2013-01-15 revision 38858) [i386-cygwin]  Chloe@dumbopc /cygdrive/c/Sites $ rails -v Rails 3.2.11  Chloe@dumbopc /cygdrive/c/Sites $ cd testapp  Chloe@dumbopc /cygdrive/c/Sites/testapp $ rails -v /usr/lib/ruby/site_ruby/1.9.1/rubygems/requirement.rb:114: stack level too  deep (SystemStackError)  Chloe@dumbopc /cygdrive/c/Sites/testapp $ bundle install Fetching gem metadata from https://rubygems.org/........... Fetching gem metadata from https://rubygems.org/.. Unfortunately, a fatal error has occurred. Please see the Bundler troubleshooting documentation at http://bit.ly/bundler-issues. Thanks! /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/friendly_errors.rb:32:  stack level too deep (SystemStackError)  

I tried both versions of Ruby, ruby 1.9.3p327 and ruby-1.9.3-p374-1. I found something from Google that hinted that 1.9.2 might fix the problem, but I could not select that in setup.exe. I also tried

peflags -x8192000 `which ruby` 

which did not help. I also tried 18192000. I uninstalled Ruby and re-installed. Same with rails. It only fails when it's inside of an app directory. When I try

rails new testapp 

It creates the directory and files, but fails on bundle install. I can't run rails -v in that directory either. I suspect there are other commands that will fail too, but I haven't found them yet. I'm using Windows XP SP3.

$ uname -a CYGWIN_NT-5.1 dumbopc 1.7.17(0.262/5/3) 2012-10-19 14:39 i686 Cygwin 

Here are the bad lines if you are curious

$ rails -v /usr/lib/ruby/site_ruby/1.9.1/rubygems/requirement.rb:114: stack level too  deep (SystemStackError) $ cat -n /usr/lib/ruby/site_ruby/1.9.1/rubygems/requirement.rb | grep '^ *114'    114      requirements.map { |op, version| "#{op} #{version}" }.sort $ bundle install /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/friendly_errors.rb:32:  stack level too deep (SystemStackError) $ cat -n /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/friendly_errors.rb |  grep '^ *32'     32        raise e 

I also tried all the suggestions from bundler following its link. I added -d to the rails script and it printed this:

$ rails -v Exception `LoadError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems.rb:1264 - cannot load such file -- rubygems/defaults/operating_system Exception `LoadError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems.rb:1273 - cannot load such file -- rubygems/defaults/ruby Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=rake version=0.9.2.2> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=rake version=10.0.3> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=json version=1.7.5> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=json version=1.7.6> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=rake version=0.9.2.2> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=rake version=10.0.3> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=json version=1.7.5> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=json version=1.7.6> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=rake version=0.9.2.2> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=rake version=10.0.3> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=json version=1.7.5> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=json version=1.7.6> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=rake version=0.9.2.2> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=rake version=10.0.3> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=json version=1.7.5> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=json version=1.7.6> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=rake version=0.9.2.2> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=rake version=10.0.3> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=json version=1.7.5> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=json version=1.7.6> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=rake version=0.9.2.2> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=rake version=10.0.3> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=json version=1.7.5> Exception `NoMethodError' at /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1495 - undefined method `to_ary' for #<Gem::Specification name=json version=1.7.6> /usr/lib/ruby/site_ruby/1.9.1/rubygems/requirement.rb:118: stack level too deep (SystemStackError)   $ head -1 /usr/bin/rails #!/usr/bin/ruby.exe -d 

回答1:

I think your peflags command line is wrong. Try:

peflags -X409600 `which ruby` 

as described here.

回答2:

Same thing happened to me. I uninstalled ruby from the cygwin setup file, and when I ram ruby -v in CMD, it was still there!

Turns out, I have other instances of ruby.exe in the "PATH" environment variables. So check your environment variables, uninstall everything and see if there is another ruby file it is pointing to.

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