JLS string concatenation clarification

[Alex Buckley]

To compiler-dev and others,

Since the original question asked when the JLS allows compilers to 
deviate from "always" creating a new String object, I would like to know 
more about the following case:

On 1/21/2014 4:45 PM, Alex Buckley wrote:
> - "Semi" constant expressions like s+"". Concatenating the empty string
> literal "" with a String expression is mentioned in
> https://bugs.openjdk.java.net/browse/JDK-4036535. The expectation (per
> JLS1) that a new String object is always created in this case is
> misplaced (per the JDK's actual behavior). But, the JLS never clarified
> this.

If compiler authors can confirm (on-list or privately) that indeed 
"concatenation with empty string does not create the new instance of 
String", then I will clarify the JLS.

Alex