gistfile1.txt

[] ~/projects/jruby $ git diff core
diff --git a/core/src/main/ruby/jruby/kernel/kernel.rb b/core/src/main/ruby/jruby/kernel/kernel.rb
index 748381a1f1..a11b288122 100644
--- a/core/src/main/ruby/jruby/kernel/kernel.rb
+++ b/core/src/main/ruby/jruby/kernel/kernel.rb
@@ -5,12 +5,12 @@ module Kernel
   end
 
   # Replaces Java version for better caching
-  def initialize_dup(original)
-    initialize_copy(original)
+  def initialize_dup(original, **kwargs)
+    initialize_copy(original, **kwargs)
   end
 
   # Replaces Java version for better caching
-  def initialize_clone(original)
-    initialize_copy(original)
+  def initialize_clone(original, **kwargs)
+    initialize_copy(original, **kwargs)
   end
 end

[] ~/projects/jruby $ jruby -Xbacktrace.style=full -e 1
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/abbrev-0.1.0.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/base64-0.1.0.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/benchmark-0.1.1.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/bundler-2.2.29.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/cgi-0.2.0.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/csv-3.1.9.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/delegate-0.2.0.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/did_you_mean-1.5.0.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/digest-3.1.0.pre2-java.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/drb-2.0.4.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/erb-2.2.0.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/ffi-1.15.4-java.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/fileutils-1.5.0.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/find-0.1.0.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/forwardable-1.3.2.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/getoptlong-0.1.1.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/io-console-0.5.9-java.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/ipaddr-1.2.2.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/irb-1.3.5.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/jar-dependencies-0.4.1.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/jruby-openssl-0.11.0-java.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/jruby-readline-1.3.7-java.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/json-2.5.1-java.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/logger-1.4.3.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/matrix-0.3.1.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/mutex_m-0.1.1.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/observer-0.1.1.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/open-uri-0.1.0.gemspec]: 
Invalid gemspec in [/Users/headius/projects/jruby/lib/ruby/gems/shared/specifications/default/optparse-0.1.0.gemspec]: 
Unhandled Java exception: java.lang.ArrayIndexOutOfBoundsException: Index -7 out of bounds for length 1280
java.lang.ArrayIndexOutOfBoundsException: Index -7 out of bounds for length 1280
               setLine at org/jruby/runtime/ThreadContext.java:735
  processBookKeepingOp at org/jruby/ir/interpreter/InterpreterEngine.java:414
             interpret at org/jruby/ir/interpreter/StartupInterpreterEngine.java:100
        INTERPRET_ROOT at org/jruby/ir/interpreter/Interpreter.java:96
               execute at org/jruby/ir/interpreter/Interpreter.java:81
               execute at org/jruby/ir/interpreter/Interpreter.java:30
               execute at org/jruby/ir/IRTranslator.java:42
        runInterpreter at org/jruby/Ruby.java:1267
              loadFile at org/jruby/Ruby.java:2895
                  load at org/jruby/runtime/load/LibrarySearcher.java:937
                  load at org/jruby/runtime/load/LibrarySearcher.java:895
                  load at org/jruby/runtime/load/LoadService.java:322
            loadCommon at org/jruby/RubyKernel.java:1082
                  load at org/jruby/RubyKernel.java:1052
                  call at org/jruby/RubyKernel$INVOKER$s$load.gen:-1
                  call at org/jruby/internal/runtime/methods/JavaMethod.java:422
          cacheAndCall at org/jruby/runtime/callsite/CachingCallSite.java:372
                  call at org/jruby/runtime/callsite/CachingCallSite.java:175
           processCall at org/jruby/ir/interpreter/InterpreterEngine.java:316
             interpret at org/jruby/ir/interpreter/StartupInterpreterEngine.java:72
        INTERPRET_ROOT at org/jruby/ir/interpreter/Interpreter.java:96
               execute at org/jruby/ir/interpreter/Interpreter.java:81
               execute at org/jruby/ir/interpreter/Interpreter.java:30
               execute at org/jruby/ir/IRTranslator.java:42
        runInterpreter at org/jruby/Ruby.java:1267
              loadFile at org/jruby/Ruby.java:2895
                  load at org/jruby/runtime/load/ExternalScript.java:59
                  load at org/jruby/runtime/load/LibrarySearcher.java:895
   loadFromClassLoader at org/jruby/runtime/load/LoadService.java:350
      initRubyPreludes at org/jruby/Ruby.java:1794
     initBootLibraries at org/jruby/Ruby.java:580
                <init> at org/jruby/Ruby.java:529
           newInstance at org/jruby/Ruby.java:713
           internalRun at org/jruby/Main.java:264
                   run at org/jruby/Main.java:225
                  main at org/jruby/Main.java:197