RFR(S): 8075253: Multiversion JAR feature: CDS does not support MV-JARs

[Paul Sandoz]

> On 19 Mar 2016, at 19:02, Steve Drach <steve.drach at oracle.com> wrote:
> 
> Yes, it’s a bug.

Not quite sure why that is failing within JarFile given the Attributes.MULTI_RELEASE Name instance is used as the key

isMultiRelease = result = (man != null)
        && man.getMainAttributes().containsKey(MULTI_RELEASE)
        ? Boolean.TRUE : Boolean.FALSE;

Or even the following should work:

  new Attributes.Name("Multi-Release”)

since the Attributes.Name.equals/hashCode operate with case insensitivity.

What am i missing?


>  I’m currently working on another bug that requires me to change manifest processing.  It will be case insensitive.
> 

But it has to be consistent with look up using Attributes.MULTI_RELEASE or new Attributes.Name("Multi-Release”).

Also, the value of the “Multi-Release” attribute is not important, it’s the presence of that attribute name in the manifest that signals whether the JAR is a MR-JAR or not, the value is ignored.

Paul.