Compiler crashing:
[javac] java.lang.NullPointerException
[javac] at com.sun.tools.javac.jvm.Code.emitop0(Code.java:538)
[javac] at com.sun.tools.javac.jvm.Items$SelfItem.load(Items.java:367)
[javac] at com.sun.tools.javac.jvm.Gen.genArgs(Gen.java:852)
[javac] at com.sun.tools.javac.jvm.Gen.visitNewClass(Gen.java:1729)
[javac] at com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1436)
due to bad code generated by LambdaToMethod, in turn caused by missed detection of inner class constructor, in turn caused by binary sense wrong in conversion from != TAG to hasTag().