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require 'ripper' yields const already init warnings #2904

cpuguy83 opened this Issue May 1, 2015 · 2 comments


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cpuguy83 commented May 1, 2015

When trying to require ripper on jruby 9k-pre2 we get these warnings:

/opt/jruby/lib/ruby/stdlib/ripper/core.rb:13: warning: already initialized constant SCANNER_EVENT_TABLE
/opt/jruby/lib/ruby/stdlib/ripper/core.rb:13: warning: already initialized constant PARSER_EVENT_TABLE
/opt/jruby/lib/ruby/stdlib/ripper/core.rb:13: warning: already initialized constant Version
/opt/jruby/lib/ruby/stdlib/ripper/core.rb:13: warning: already initialized constant SCRIPT_LINES__

Looking at the referenced core.rb, the only thing I can see is that before doing anything it's requiring ripper.jar... so I'm assuming that these constants are being defined in there.


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enebo commented May 1, 2015

Hmmm, apparently I added the right mojo in the ripper.jar for it to load itself. @headius can you commit this ripper.rb change to MRI upstream?


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headius commented May 5, 2015

Updated our stdlib in jruby/ruby@a0951c6

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