question related to bug: 8024694

Tue Sep 17 08:23:40 PDT 2013

On 17/09/13 14:13, Remi Forax wrote:
> On 09/17/2013 02:55 PM, Vicente-Arturo Romero-Zaldivar wrote:
>> Hi Alex,
>>
>> I have a doubt related to bug entry [1]. The bug has been created by 
>> someone in the Eclipse community, I assume. As the bug description 
>> states there is a mismatch between javac and Eclipse compiler related 
>> to the generation of a signature for enum constructors. Javac 
>> generates it always, Eclipse (I was trying with ecj-3.7.1) don't 
>> generate it, at least I didn't found a case where it gets generated 
>> by Eclipse. So there is an issue when a class generated with Eclipse 
>> is loaded with javac.
>>
>> Also in the bug entry there is a link to Eclipse's bug db, [2], where 
>> there are some considerations from Eclipse developers about this 
>> being a javac bug or no.
>>
>> Could you please clarify if in this case javac is OK according to the 
>> spec and this is not a bug?
>>
>> Thanks,
>> Vicente
>>
>> [1] https://bugs.openjdk.java.net/browse/JDK-8024694
>> [2] https://bugs.eclipse.org/bugs/show_bug.cgi?id=388314
>
> In my opinion, there is a bug in javac.
> javac requires that the constructor of an enum must a Signature 
> attribute but the spec only requires a Signature attribute
> if the method is generics or use a type variable defined on the class.
> So eclipse can generate an enum constructor without a Signature 
> attribute and javac should work without
> requiring this specific attribute.
>
> so there are 2 bugs to fix, one is that javac should not generate a 
> Signature attribute and
> the second one is that javac should work even if the Signature 
> attribute is not defined.
>
> Rémi
>
Thanks Rémi,

As a side comment I was trying to make eclipse generate the signature, 
and even including type variables in the constructor declaration, 
eclipse didn't generate the signature. So seems like it's not generating 
the signature even in cases where it should. Probably this has been 
fixed in last versions.

Vicente