error.txt

An exception has occurred in the compiler (1.8.0_25). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport)  after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report.  Thank you.
java.lang.NullPointerException
	at com.sun.tools.javac.code.Types.asSuper(Types.java:1939)
	at com.sun.tools.javac.code.Types$4.visitClassType(Types.java:918)
	at com.sun.tools.javac.code.Types$4.visitClassType(Types.java:841)
	at com.sun.tools.javac.code.Type$ClassType.accept(Type.java:778)
	at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:4451)
	at com.sun.tools.javac.code.Types.isSubtype(Types.java:837)
	at com.sun.tools.javac.code.Types.isSubtype(Types.java:801)
	at com.sun.tools.javac.code.Types.isCastable(Types.java:1483)
	at com.sun.tools.javac.comp.Attr$10.compatible(Attr.java:3118)
	at com.sun.tools.javac.comp.Check.checkType(Check.java:546)
	at com.sun.tools.javac.comp.Attr$ResultInfo.check(Attr.java:517)
	at com.sun.tools.javac.comp.Attr.check(Attr.java:277)
	at com.sun.tools.javac.comp.Attr.visitParens(Attr.java:2991)
	at com.sun.tools.javac.tree.JCTree$JCParens.accept(JCTree.java:1661)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
	at com.sun.tools.javac.comp.Attr.visitTypeCast(Attr.java:3125)
	at com.sun.tools.javac.tree.JCTree$JCTypeCast.accept(JCTree.java:1814)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
	at com.sun.tools.javac.comp.Attr.visitParens(Attr.java:2990)
	at com.sun.tools.javac.tree.JCTree$JCParens.accept(JCTree.java:1661)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
	at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3254)
	at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
	at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1843)
	at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
	at com.sun.tools.javac.comp.DeferredAttr.attribSpeculative(DeferredAttr.java:386)
	at com.sun.tools.javac.comp.DeferredAttr$2.complete(DeferredAttr.java:279)
	at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:245)
	at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:232)
	at com.sun.tools.javac.comp.Resolve$MethodResultInfo.check(Resolve.java:993)
	at com.sun.tools.javac.comp.Resolve$4.checkArg(Resolve.java:826)
	at com.sun.tools.javac.comp.Resolve$AbstractMethodCheck.argumentsAcceptable(Resolve.java:731)
	at com.sun.tools.javac.comp.Resolve$4.argumentsAcceptable(Resolve.java:835)
	at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:576)
	at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:1431)
	at com.sun.tools.javac.comp.Resolve.findMethodInScope(Resolve.java:1618)
	at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1689)
	at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1662)
	at com.sun.tools.javac.comp.Resolve$9.doLookup(Resolve.java:2415)
	at com.sun.tools.javac.comp.Resolve$BasicLookupHelper.lookup(Resolve.java:3074)
	at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3325)
	at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2412)
	at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2406)
	at com.sun.tools.javac.comp.Attr.selectSym(Attr.java:3395)
	at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3281)
	at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
	at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1843)
	at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
	at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:656)
	at com.sun.tools.javac.comp.Attr.visitExec(Attr.java:1611)
	at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1296)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
	at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:676)
	at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:692)
	at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1142)
	at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
	at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:676)
	at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1035)
	at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:607)
	at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:676)
	at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4342)
	at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4252)
	at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4181)
	at com.sun.tools.javac.comp.Attr.attrib(Attr.java:4156)
	at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1248)
	at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:901)
	at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860)
	at com.sun.tools.javac.main.Main.compile(Main.java:523)
	at com.sun.tools.javac.main.Main.compile(Main.java:381)
	at com.sun.tools.javac.main.Main.compile(Main.java:370)
	at com.sun.tools.javac.main.Main.compile(Main.java:361)
	at com.sun.tools.javac.Main.compile(Main.java:56)
	at com.sun.tools.javac.Main.main(Main.java:42)

FunTest.java

public class FunTest {
    public static void main(String[] args) {
	System.out.println( ((int)( () -> {} ) ).getClass());
    }
}

getClassを消したらちゃんとfunctional type errorになった