Loading... (original) (raw)

Fix for

JDK-6521376

add explicit processing of MaxTenuringThreshold XX option. When bad value for MaxTenuringThreshold is passed(e.g. negative value for unsigned option "-XX:MaxTenuringThreshold=-1"), then function print warning and continue execution with default value(0).

This behavior differs from Java 8. Java 8 process this situation in common way for unsigned options, i.e. print waring and reports a error.

Example:

1. Java 8u40
   java -XX:MaxTenuringThreshold=-1 -version
   Improperly specified VM option 'MaxTenuringThreshold=-1'
   Error: Could not create the Java Virtual Machine.
   Error: A fatal exception has occurred. Program will exit.

2. Java 9 b55
   java -XX:MaxTenuringThreshold=-1 -version
   Invalid MaxTenuringThreshold: -XX:MaxTenuringThreshold=-1
   java version "1.9.0-ea"
   Java(TM) SE Runtime Environment (build 1.9.0-ea-b55)
   Java HotSpot(TM) 64-Bit Server VM (build 1.9.0-ea-b55, mixed mode)

As we see, Java 8u40 and Java 9 b55 reports about wrong option value, but Java 8u40 exit with error and Java 9 b55 successfully exit.

So, Java 9 behavior must be corrected to match the common behavior(exit JVM and print common error message)