jshell --enable-preview --execution=local bug?

[Jan Lahoda]

Hi Max,


I've filled:

https://bugs.openjdk.org/browse/JDK-8308305


Thanks for the report.


Jan


On 17. 05. 23 0:52, Max Rydahl Andersen wrote:
>
> Hi,
>
> As part of adding |--enable-preview| support to JBang 0.107 
> <https://github.com/jbangdev/jbang/releases/tag/v0.107.0> I spotted 
> this discrepancy in jshell behaviour. Is this to be expected or a bug?
>
> First what is expected right behaviour:
>
> |$ jshell --enable-preview | Welcome to JShell -- Version 21-ea | For 
> an introduction type: /help intro jshell> var name="test"; 
> STR."\{name} test"; name ==> "test" $2 ==> "test test" jshell> 
> $2.length(); $3 ==> 9 |
>
> but now when running with |--execution=local|:
>
> |jshell --enable-preview --execution=local | Welcome to JShell -- 
> Version 21-ea | For an introduction type: /help intro jshell> var 
> name="test"; STR."\{name} test"; name ==> "test" $2 ==> jshell> 
> $2.length(); | Exception java.lang.UnsupportedClassVersionError: 
> Preview features are not enabled for REPL/$JShell$12 (class file 
> version 65.65535). Try running with '--enable-preview' | at 
> ClassLoader.defineClass1 (Native Method) | at ClassLoader.defineClass 
> (ClassLoader.java:1018) | at SecureClassLoader.defineClass 
> (SecureClassLoader.java:150) | at 
> DefaultLoaderDelegate$RemoteClassLoader.findClass 
> (DefaultLoaderDelegate.java:156) | at ClassLoader.loadClass 
> (ClassLoader.java:593) | at ClassLoader.loadClass 
> (ClassLoader.java:526) | at (#3:1) |
>
> I found that by duplicating |--enable-preview| in runtime options 
> fixes things:
>
> |$ jshell --enable-preview --execution=local -J--enable-preview | 
> Welcome to JShell -- Version 21-ea | For an introduction type: /help 
> intro jshell> var name="test"; STR."\{name} test"; name ==> "test" $2 
> ==> "test test" jshell> $2.length(); $3 ==> 9 |
>
> Seems like a bug to me, wdyt? and where to open/report this best or is 
> it enough here?
>
> /max
> https://xam.dk/about
>
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