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JRuby 1.7.5 doesn't compile valid class files #1136
I'm hoping this isn't a warbler-based bug, but given the stack trace, I'm assuming it has more to do with the JRuby 1.7.5 compiler.
Under 1.7.5, a jar-file will be created, but upon running it, the following exception will be raised:
Looks like this issue might be the underlying reason for the exception.
If you can provide simple steps to build an app this way (I have not used this feature of warbler in a long time) I can try to reproduce here.
I did find a couple other JRuby issues indicating that conflicts with certain versions of the ASM bytecode library could be to blame.
Also this: jruby/warbler#196
And this one claims to fix the problem in warbler: jruby/warbler#197