Please review this fix for a bug introduced by JDK-8173912. The value written by readConfiguation (in jvmciCompilerToVM.cpp) to VMField.value may now be a Boolean. As such, the type of VMField.value must be Object. https://bugs.openjdk.java.net/browse/JDK-8174957 http://cr.openjdk.java.net/~dnsimon/8174957/webrev/ -Doug