In a large +LogCompilation log where the app being run is using nashorn to run a script, the LogCompilation tools throws this:

java.lang.Error: scope underflow at 785185:120
at com.sun.hotspot.tools.compiler.LogParser.reportInternalError(LogParser.java:589)
at com.sun.hotspot.tools.compiler.LogParser.reportInternalError(LogParser.java:569)
at com.sun.hotspot.tools.compiler.LogParser.startElement(LogParser.java:1029)

Because there are no tests for LogCompilation I am not sure what later processing is affected by this error, it continues to process the log after this happens.