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8006140: Javac NPE compiling Lambda expression on initialization expression of static field in interface Lambdas occurring in static contexts or those not needing instance information should be generated into static methods. This has long been the case for classes. However, as a work-around to the lack of support for statics on interfaces, interface lambda methods have been generated into default methods. For lambdas in interface static contexts (fields and static methods) this causes an NPE in javac because there is no 'this'. MethodHandles now support static methods on interfaces. This changeset allows lambda methods to be generated as static interface methods. An existing bug in Hotspot (8013875) is exposed in a test when the "-esa" flag is used. This test and another test that already exposed this bug have been marked with @ignore. Reviewed-by: mcimadamore
Building the "langtools" workspace. The "langtools" workspace can be built from the command line with Ant. The build file is make/build.xml, in conjunction with make/build.properties. Some additional user-specific properties files are also read, to allow you to customize selected properties as needed. Individual tools within the workspace can also be built and worked on with NetBeans, using the projects in the make/netbeans directory. The "langtools" workspace can also be built from the command line with GNU Make, although the Makefile is simply a wrapper around the Ant build file. This is provided for systems (such as the full OpenJDK build) that expect to be able to build this workspace with GNU Make. System Requirements: Ant: version 1.6.5 or later NetBeans: version 6.0 or later (optional) JDK: currently version 1.5.0, although 1.6.0 is recommended OS: any system supporting the above tools For more information: Ant: http://ant.apache.org/ GNU Make: http://www.gnu.org/software/make/ NetBeans: http://www.netbeans.org/ Testing the "langtools" workspace. The primary set of tests for the compiler is the compiler TCK. This tests that the compiler performs according to the specifications in JLS and JVMS. In addition, there is a substantial collection of regression and unit tests for all the tools in the maain langtools test/ directory. Finally, there is a small set of tests to do basic validation of a build of the langtools workspace for use by JDK. These tests check the contents of the dist/ directory generated by the build, and verify that the various tools can do basic "Hello World"-style processing. These tests should be run by jtreg, with the -jdk option set a version of JDK capable of running the default output of the javac compiler in this workspace. Currently, this means JDK 6 or better.