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simplecov triggers load error when running coverage on jruby- #2587

bigsur0 opened this issue Feb 11, 2015 · 1 comment


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@bigsur0 bigsur0 commented Feb 11, 2015

Originally filed under: simplecov-ruby/simplecov#368

The call to Coverage.start on line 31 triggers the load error below by way of SimpleCov.start {}

 25     def start(profile=nil, &block)
 26       if SimpleCov.usable?
 27         load_profile(profile) if profile
 28         configure(&block) if block_given?
 29         @result = nil
 30         self.running = true
 31         Coverage.start
 32       else
 33         warn "WARNING: SimpleCov is activated, but you're not running Ruby 1.9+ - no coverage analysis will happen"
 34         warn "Starting with SimpleCov 1.0.0, even no-op compatibility with Ruby <= 1.8 will be entirely dropped."
 35         false
 36       end
 37     end
$ rspec
LoadError: load error: spec_helper -- java.lang.LinkageError: loader constraint violation: loader (instance of org/jruby/util/JRubyClassLoader) previously initiated loading for a different type with name "org/jruby/ext/coverage/CoverageData"
                      require at org/jruby/
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@headius headius commented Mar 12, 2015

This was likely due to some older classloader logic we have since reverted. Copying @mkristian so he knows about this.

I'm going to mark this closed. It should be fine in 9k.pre2.

@headius headius added this to the milestone Mar 12, 2015
@headius headius closed this Mar 12, 2015
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