Problems with JDK 10

[Doug Simon]

Hi Stefan,

I'm not aware of any problems with Truffle on JDK 10. This looks like a javac bug. Maybe turn on more flags to see what annotation processing is happening such as -XprintProcessorInfo and -XprintRounds. Compare the output of these flags between 9 and 10.

-Doug

> On 22 Mar 2018, at 08:29, Stefan Marr <java at stefan-marr.de> wrote:
> 
> Hi:
> 
> Are there any know problems with Truffle and JDK 10?
> Since Homebrew updated its java cask to JDK 10, I got my builds failing on Travis.
> My setup uses the `--release 8` flag, so, I was hoping to avoid any issues.
> 
> The javac output, when compiling the whole project is unfortunately less than helpful.
> (see https://travis-ci.org/smarr/SOMns/jobs/356726221#L2353,
> I can only see “package does not exist”, or "cannot find symbol" errors.)
> 
> It looks to me as if the annotation processor is failing to run.
> 
> Locally, I have been trying to find out whether any specific single file is not building correctly.
> So, I went, compiled everything with Java 9, and then tried compiling some subset with Java 10.
> 
> For individual files, nothing seems to be wrong.
> However, when I clean out the compilation for all my builtin functions (som.primitives),
> I get the following lovely error:
> 
> ```
>    [javac] /Users/smarr/Projects/SOM/SOMns/src/som/primitives/ActivitySpawn.java:167: error: expression not allowed as annotation value
>    [javac]   @Primitive(primitive = "threading:threadSpawn:with:",
>    [javac]   ^
> ```
> 
> The same compiles fine with JDK 8 and 9.
> 
> Even worse, just cleaning out ActivitySpawn compiles fine too:
> 
> ```
> $ rm ./src_gen/som/primitives/ActivitySpawnFactory.java ./build/classes/som/primitives/ActivitySpawn*
> $ ant -Dskip.graal=true compile-som
> Buildfile: /Users/smarr/Projects/SOM/SOMns/build.xml
>     [echo]
>     [echo]         ant.java.version: 9
>     [echo]         java.version:     10
>     [echo]         is.atLeastJava9:  true
>     [echo]
> 
> compile-som:
>    [javac] Compiling 1 source file to /Users/smarr/Projects/SOM/SOMns/build/classes
>    [javac] warning: No processor claimed any of these annotations: com.oracle.truffle.api.nodes.Node.Child,com.oracle.truffle.api.dsl.Cached,com.oracle.truffle.api.CompilerDirectives.CompilationFinal,bd.primitives.Primitive.Container,com.oracle.truffle.api.CompilerDirectives.TruffleBoundary,com.oracle.truffle.api.dsl.GenerateNodeFactory,com.oracle.truffle.api.dsl.Specialization,com.oracle.truffle.api.dsl.NodeChild,com.oracle.truffle.api.dsl.ImportStatic
>    [javac] warning: No processor claimed any of these annotations: com.oracle.truffle.api.dsl.GeneratedBy,com.oracle.truffle.api.nodes.Node.Child,com.oracle.truffle.api.CompilerDirectives.CompilationFinal
>    [javac] 2 warnings
> 
> BUILD SUCCESSFUL
> Total time: 1 second
> ```
> 
> Did anyone see anything like this before?
> 
> Might this be a javac bug?
> 
> Thanks
> Stefan
> 
> -- 
> Stefan Marr
> School of Computing, University of Kent
> http://stefan-marr.de/research/
> 
>