Generated parameter names for -parameters (JEP118)

[Jesper Steen Møller]

Hej Compiler-dev

I'm investigating the support for JEP118.
Is this a bug:

$ cat ParameterNames.java 
import java.util.concurrent.Callable;

public class ParameterNames {
	
	public Callable<String> makeInner(final String message) {
		return new Callable<String>()  {
			public String call() throws Exception {
				return message;
			}
		};
	}
}
$ javac -parameters ParameterNames.java 
$ javap -c -s -p -l -v ParameterNames\$1.class 
Classfile /Users/jesper/Eclipse/JDT-Java8-workspace/Zest/src/ParameterNames$1.class
  Last modified 29-05-2013; size 869 bytes
  MD5 checksum 014ebef5db6af83f23b19b1cef7b2b44
  Compiled from "ParameterNames.java"
class ParameterNames$1 extends java.lang.Object implements java.util.concurrent.Callable<java.lang.String>
  Signature: #23                          // Ljava/lang/Object;Ljava/util/concurrent/Callable<Ljava/lang/String;>;
  SourceFile: "ParameterNames.java"
  EnclosingMethod: #27.#28                // ParameterNames.makeInner
  InnerClasses:
       #5; //class ParameterNames$1
  minor version: 0
  major version: 52
  flags: ACC_SUPER
Constant pool:
   #1 = Fieldref           #5.#29         //  ParameterNames$1.this$0:LParameterNames;
   #2 = Fieldref           #5.#30         //  ParameterNames$1.val$message:Ljava/lang/String;
   #3 = Methodref          #6.#31         //  java/lang/Object."<init>":()V
   #4 = Methodref          #5.#32         //  ParameterNames$1.call:()Ljava/lang/String;
   #5 = Class              #33            //  ParameterNames$1
   #6 = Class              #35            //  java/lang/Object
   #7 = Class              #36            //  java/util/concurrent/Callable
   #8 = Utf8               val$message
   #9 = Utf8               Ljava/lang/String;
  #10 = Utf8               this$0
  #11 = Utf8               LParameterNames;
  #12 = Utf8               <init>
  #13 = Utf8               (LParameterNames;Ljava/lang/String;)V
  #14 = Utf8               Code
  #15 = Utf8               LineNumberTable
  #16 = Utf8               MethodParameters
  #17 = Utf8               call
  #18 = Utf8               ()Ljava/lang/String;
  #19 = Utf8               Exceptions
  #20 = Class              #37            //  java/lang/Exception
  #21 = Utf8               ()Ljava/lang/Object;
  #22 = Utf8               Signature
  #23 = Utf8               Ljava/lang/Object;Ljava/util/concurrent/Callable<Ljava/lang/String;>;
  #24 = Utf8               SourceFile
  #25 = Utf8               ParameterNames.java
  #26 = Utf8               EnclosingMethod
  #27 = Class              #38            //  ParameterNames
  #28 = NameAndType        #39:#40        //  makeInner:(Ljava/lang/String;)Ljava/util/concurrent/Callable;
  #29 = NameAndType        #10:#11        //  this$0:LParameterNames;
  #30 = NameAndType        #8:#9          //  val$message:Ljava/lang/String;
  #31 = NameAndType        #12:#41        //  "<init>":()V
  #32 = NameAndType        #17:#18        //  call:()Ljava/lang/String;
  #33 = Utf8               ParameterNames$1
  #34 = Utf8               InnerClasses
  #35 = Utf8               java/lang/Object
  #36 = Utf8               java/util/concurrent/Callable
  #37 = Utf8               java/lang/Exception
  #38 = Utf8               ParameterNames
  #39 = Utf8               makeInner
  #40 = Utf8               (Ljava/lang/String;)Ljava/util/concurrent/Callable;
  #41 = Utf8               ()V
{
  final java.lang.String val$message;
    descriptor: Ljava/lang/String;
    flags: ACC_FINAL, ACC_SYNTHETIC


  final ParameterNames this$0;
    descriptor: LParameterNames;
    flags: ACC_FINAL, ACC_SYNTHETIC


  ParameterNames$1(ParameterNames, java.lang.String);
    descriptor: (LParameterNames;Ljava/lang/String;)V
    flags: 
    LineNumberTable:
      line 6: 0
    Code:
      stack=2, locals=3, args_size=3
         0: aload_0       
         1: aload_1       
         2: putfield      #1                  // Field this$0:LParameterNames;
         5: aload_0       
         6: aload_2       
         7: putfield      #2                  // Field val$message:Ljava/lang/String;
        10: aload_0       
        11: invokespecial #3                  // Method java/lang/Object."<init>":()V
        14: return        
      LineNumberTable:
        line 6: 0
      MethodParameters: length = 0x5
       02 00 0A 80 10 
       ^^^^^^^^^^^^^^

Seems like an entry is missing from the table??

Kind regards,
Jesper