javac throws a NPE when compiling a lambda expression

[Arul Dhesiaseelan]

public class TestLambda {

  class Payment {
    private int amount;

    Payment(int amount) {
      this.amount = amount;
    }

    public int getAmount() {
      return amount;
    }
  }

  interface PaymentProcessor {
    void process(Payment pmt);
  }

  {
    invokeProcessor(# { pmt - > log("Processed # " + pmt.getAmount() + " at
" + new Date()) });
  }

  void invokeProcessor(PaymentProcessor processor) {
    processor.process(new Payment(42));
  }

  void log(String msg) {
    System.out.println(msg);
  }
}

I am trying to rebuild my old Lambda example (which used to work with
earlier prototype using build 115), but failed to compile with the latest
prototype using build 145:

An exception has occurred in the compiler (1.7.0-internal). 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.comp.Flow.visitNewClass(Flow.java:1308)
        at
com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1391)
        at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at com.sun.tools.javac.comp.Flow.scanExpr(Flow.java:572)
        at com.sun.tools.javac.comp.Flow.visitBinary(Flow.java:1504)
        at com.sun.tools.javac.tree.JCTree$JCBinary.accept(JCTree.java:1654)
        at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at com.sun.tools.javac.comp.Flow.scanExpr(Flow.java:572)
        at com.sun.tools.javac.comp.Flow.scanExprs(Flow.java:582)
        at com.sun.tools.javac.comp.Flow.visitApply(Flow.java:1299)
        at
com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1337)
        at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at com.sun.tools.javac.comp.Flow.scanStat(Flow.java:556)
        at com.sun.tools.javac.comp.Flow.analyzeLambda(Flow.java:1370)
        at com.sun.tools.javac.comp.Attr.attribLambda(Attr.java:2314)
        at com.sun.tools.javac.comp.Attr$1.deferredAttr(Attr.java:2194)
        at com.sun.tools.javac.comp.Attr$1.deferredAttr(Attr.java:2185)
        at
com.sun.tools.javac.comp.Attr$SAMDeferredAttribution.complete(Attr.java:2793)
        at
com.sun.tools.javac.comp.Infer$InferPolyCompleter.complete(Infer.java:737)
        at com.sun.tools.javac.comp.Infer.instantiatePoly(Infer.java:748)
        at
com.sun.tools.javac.comp.Resolve.checkRawArgumentsAcceptable(Resolve.java:553)
        at com.sun.tools.javac.comp.Infer.instantiateMethod(Infer.java:419)
        at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:396)
        at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:820)
        at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1064)
        at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1025)
        at com.sun.tools.javac.comp.Resolve.findFun(Resolve.java:1158)
        at com.sun.tools.javac.comp.Resolve.resolveMethod(Resolve.java:1582)
        at com.sun.tools.javac.comp.Attr.visitIdent(Attr.java:2546)
        at com.sun.tools.javac.tree.JCTree$JCIdent.accept(JCTree.java:1826)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:466)
        at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1578)
        at
com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1337)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:466)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:484)
        at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:499)
        at com.sun.tools.javac.comp.Attr.visitExec(Attr.java:1334)
        at
com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1180)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:466)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:484)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:519)
        at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:535)
        at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:952)
        at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:794)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:466)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:484)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:519)
        at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:3793)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:3715)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:3651)
        at com.sun.tools.javac.comp.Attr.attrib(Attr.java:3625)
        at
com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1189)
        at
com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:877)
        at
com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:836)
        at com.sun.tools.javac.main.Main.compile(Main.java:417)
        at com.sun.tools.javac.main.Main.compile(Main.java:331)
        at com.sun.tools.javac.main.Main.compile(Main.java:322)
        at com.sun.tools.javac.Main.compile(Main.java:76)
        at com.sun.tools.javac.Main.main(Main.java:61)


java version "1.7.0-ea"
Java(TM) SE Runtime Environment (build 1.7.0-ea-b145)
Java HotSpot(TM) 64-Bit Server VM (build 21.0-b15, mixed mode)

I am not sure what has changed since then. Any clues?

-Arul