RFR: 8291640: java/beans/XMLDecoder/8028054/Task.java should use the 3-arg Class.forName

[Phil Race]

On Mon, 1 Aug 2022 16:23:59 GMT, Ao Qi <aoqi at openjdk.org> wrote:

> The issue comes from https://github.com/openjdk/jdk/pull/9677#issuecomment-1200811357. 
> 
> If Loom is not supported, two XMLDecoder tests would fail. The issue could be reproduced by zero, for example:
> 
> 
> --------------------------------------------------
> TEST: java/beans/XMLDecoder/8028054/TestConstructorFinder.java
> ...
> Caused by: java.lang.UnsupportedOperationException: VM does not support continuations
> 	at java.base/jdk.internal.vm.ContinuationSupport.ensureSupported(ContinuationSupport.java:49)
> 	at java.base/jdk.internal.vm.Continuation.<clinit>(Continuation.java:52)
> 	... 9 more
> ...
> 
> --------------------------------------------------
> TEST: java/beans/XMLDecoder/8028054/TestMethodFinder.java
> ...
> Caused by: java.lang.UnsupportedOperationException: VM does not support continuations
> 	at java.base/jdk.internal.vm.ContinuationSupport.ensureSupported(ContinuationSupport.java:49)
> 	at java.base/jdk.internal.vm.Continuation.<clinit>(Continuation.java:52)
> 	... 9 more
> ...
> --------------------------------------------------

@AlanBateman - This seems very odd to me. Why does it fail and why does this alternate incantation work ?
And how would one ever have known the latter would work without some Loom knowledge ?

There's nothing here : https://download.java.net/java/early_access/loom/docs/api/java.base/java/lang/Class.html#forName(java.lang.String)
that suggests any spec change to Class.forName(String) ..

-------------

PR: https://git.openjdk.org/jdk/pull/9704