JRuby 9.2.12.0 OpenJDK11 java.lang.ArrayIndexOutOfBoundsException from JRuby Runtime #6337
Description
Seeing the following exception when running Java VM OpenJDK 64-Bit Server VM Java Version 11.0.7 JRuby Version 9.2.12.0 JRuby Revision db01a49
2020-07-20 22:07:15.662 +0000 [WARN|00898|java:stderr] :: java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 40
2020-07-20 22:07:15.662 +0000 [WARN|00898|java:stderr] :: at org.jruby.runtime.ThreadContext.popScope(ThreadContext.java:339)
2020-07-20 22:07:15.663 +0000 [WARN|00898|java:stderr] :: at org.jruby.internal.runtime.methods.MixedModeIRMethod.post(MixedModeIRMethod.java:43)
2020-07-20 22:07:15.663 +0000 [WARN|00898|java:stderr] :: at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:158)
2020-07-20 22:07:15.664 +0000 [WARN|00898|java:stderr] :: at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:143)
2020-07-20 22:07:15.664 +0000 [WARN|00898|java:stderr] :: at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:200)
2020-07-20 22:07:15.665 +0000 [WARN|00898|java:stderr] :: at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:375)
2020-07-20 22:07:15.665 +0000 [WARN|00898|java:stderr] :: at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:174)
2020-07-20 22:07:15.666 +0000 [WARN|00898|java:stderr] :: at org.jruby.util.IOOutputStream.write(IOOutputStream.java:129)
2020-07-20 22:07:15.667 +0000 [WARN|00898|java:stderr] :: at java.base/java.io.PrintStream.write(PrintStream.java:559)
2020-07-20 22:07:15.667 +0000 [WARN|00898|java:stderr] :: at java.base/sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:233)
2020-07-20 22:07:15.669 +0000 [WARN|00898|java:stderr] :: at java.base/sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:312)
2020-07-20 22:07:15.669 +0000 [WARN|00898|java:stderr] :: at java.base/sun.nio.cs.StreamEncoder.flushBuffer(StreamEncoder.java:104)
2020-07-20 22:07:15.670 +0000 [WARN|00898|java:stderr] :: at java.base/java.io.OutputStreamWriter.flushBuffer(OutputStreamWriter.java:184)
2020-07-20 22:07:15.670 +0000 [WARN|00898|java:stderr] :: at java.base/java.io.PrintStream.write(PrintStream.java:606)
2020-07-20 22:07:15.671 +0000 [WARN|00898|java:stderr] :: at java.base/java.io.PrintStream.print(PrintStream.java:745)
2020-07-20 22:07:15.671 +0000 [WARN|00898|java:stderr] :: at java.base/java.io.PrintStream.println(PrintStream.java:882)
2020-07-20 22:07:15.672 +0000 [WARN|00898|java:stderr] :: at org.jruby.RubyThread.printReportExceptionWarning(RubyThread.java:1787)
2020-07-20 22:07:15.672 +0000 [WARN|00898|java:stderr] :: at org.jruby.RubyThread.exceptionRaised(RubyThread.java:1818)
2020-07-20 22:07:15.673 +0000 [WARN|00898|java:stderr] :: at org.jruby.internal.runtime.RubyRunnable.run(RubyRunnable.java:112)
2020-07-20 22:07:15.673 +0000 [WARN|00898|java:stderr] :: at java.base/java.lang.Thread.run(Thread.java:834)