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Editorial Team
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Asked: 2026-05-23T11:40:18+00:00

I was developing something at the uni, saved to my Dropbox intending to continue

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I was developing something at the uni, saved to my Dropbox intending to continue at home. This is the message that greeted me:

$ spec graph_spec.rb 
/Users/amadan/.rvm/gems/ruby-1.9.2-rc1/gems/PriorityQueue-0.1.2/ext/priority_queue/CPriorityQueue.bundle: [BUG] Segmentation fault
ruby 1.8.7 (2009-06-12 patchlevel 174) [universal-darwin10.0]

However,

$ `which spec` graph_spec.rb 
...........................................................................

Finished in 0.046973 seconds

75 examples, 0 failures

What the heck is going on here?

For the reference:

$ which spec
/Users/amadan/.rvm/gems/ruby-1.9.2-rc1/bin/spec

UPDATE: I just noticed the 1.8.7 there… how did it get there? The top of the spec file says:

$ head `which spec`
#!/Users/amadan/.rvm/rubies/ruby-1.9.2-rc1/bin/ruby
#
# This file was generated by RubyGems.
#
# The application 'rspec' is installed as part of a gem, and
# this file is here to facilitate running it.
#

require 'rubygems'

Where does it say “run 1.8.7”?!?

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1 Answer

  1. Editorial Team

    It’s likely that RVM is messing your gems and rubies. I would recommend testing on a cleaned up RVM installation (with only 1.9 installed).

    Is /Users/amadan/.rvm/rubies/ruby-1.9.2-rc1/bin/rubyreally ruby 1.9.2 ?

    Other way to test would be to explicitely run ruby spec so you are sure this is really 1.9.2 which is called.

    To conclude, Segfaults do happen in ruby (esp. on 1.8) and are sometimes avoided by reorganizing slightly the ruby code. Good Luck !

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