[Nestmates] RFR 8187567: [Nestmates] Enable nestmate changes in javac by default
david.holmes at oracle.com
Fri Sep 15 07:12:13 UTC 2017
contains additional changes for 8187536. They will be checked in separately.
While nestmates will ultimately be associated with a future
source/target version of the JDK and an updated classfile version (see
JDK-8187302) we want to be able to enable them by default as-if
executing in that future release.
The primary changes are confined to javac and are very straight-forward:
- generate the nestmate attributes in the classfile
- use virtual invocation bytecodes for private method invocations
- don't generate private accessors
With this change in place we can update the hotspot nestmate tests to
not provide explicit "@compile" directives. We also add a test to verify
that invokeinterface is rejected for private interface methods in
pre-nestmate classfile versions (v52 works fine for this).
We can now build the JDK with the new nestmate features enabled, and run
tests without needing to provide additional javac options.
I also added a missing testcase in
test/runtime/Nestmates/privateMethods/TestInvoke.java (just to ensure
there's no unexpected difference with this$0 usage).
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