[External] : Re: JDK-8268622 - Performance issues in javac `Name` class

[Archie Cobbs]

On Mon, Mar 6, 2023 at 4:01 PM Jonathan Gibbons <jonathan.gibbons at oracle.com>
wrote:

> More on changing PoolReader ... ideally, this should be tied back to
> details in JVMS, and/or the spec updated to define the expected behavior of
> the VM and javac for similar but different equivalent names.
>
Funny you should mention it :) See the PR I just filed (link
<https://github.com/openjdk/jdk/pull/12893>), quoting:

> JVMS §4.4.7 describes "Modified UTF-8" for encoded strings, and it does
> not allow for non-standard encodings. Instead, you'll get something like
> this:
>
> $ java Test
> Error: LinkageError occurred while loading main class Test
> 	java.lang.ClassFormatError: Illegal UTF8 string in constant pool in class file Test
>
> So the compiler should also reject any invalid classfiles containing them.
>
-Archie
-- 
Archie L. Cobbs
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