another Mac OS X mlvm build

[Attila Szegedi]

That indeed works - thanks for the hep Rémi!

FWIW, I'm updating my dynamic linker framework library to work with this version of MLVM; I got everything to compile after some nontrivial amount of work (Linkage went away, for one thing :-) ) and was stumped on this for running my test suite. Now that's eliminated, I hope I'll be able to roll out a new version of the library soon.

Attila.

On Feb 7, 2011, at 11:40 AM, Rémi Forax wrote:

> On 02/07/2011 07:00 PM, Attila Szegedi wrote:
>> Hi Stephan (and MLVM folks in general),
>> 
>> I have problems with this build. Here's a _very_ minimal testcase:
>> 
>> public class X {
>>         public static void main(String[] args) {
>>                 new java.dyn.MutableCallSite(java.dyn.MethodType.methodType(Void.TYPE));
>>         }
>> }
> 
> I can reproduce it on Linux.
> There is a bug in the initialization order between Lookup and 
> MethodHandleImpl.
> Lookup should be initialized first then MethodHandleImpl but in 
> MethodHandles (near line 306)
> IMPL_TOKEN.getClass() is called before MethodHandleImpl.initLookup (near 
> line 316)
> 
> The temporary workaround is to initialize Lookup first:
>   public static void main(String[] args) {
>     MethodHandles.lookup();
>     new 
> java.dyn.MutableCallSite(java.dyn.MethodType.methodType(Void.TYPE));
>   }
> 
> 
>> compiling then running it produces this output:
>> 
>> $ ~/Downloads/java-1.7.0-internal-mlvm-2011_01_31/bin/javac X.java
>> $ ~/Downloads/java-1.7.0-internal-mlvm-2011_01_31/bin/java -XX:+UnlockExperimentalVMOptions -XX:+EnableInvokeDynamic X
>> VM option '+UnlockExperimentalVMOptions'
>> VM option '+EnableInvokeDynamic'
>> Exception in thread "main" java.lang.InternalError
>> 	at sun.dyn.MethodHandleImpl.<clinit>(MethodHandleImpl.java:141)
>> 	at java.dyn.MethodHandles.<clinit>(MethodHandles.java:63)
>> 	at java.dyn.MethodHandles$Lookup.<clinit>(MethodHandles.java:319)
>> 	at java.dyn.CallSite.<clinit>(CallSite.java:228)
>> 	at X.main(X.java:5)
>> 
>> I tried adding -XX:+EnableMethodHandles too, and that didn't help either.
>> 
>> Here's the version:
>> $ ~/Downloads/java-1.7.0-internal-mlvm-2011_01_31/bin/java -version
>> openjdk version "1.7.0-internal-fastdebug"
>> OpenJDK Runtime Environment (build 1.7.0-internal-fastdebug-stephen_2011_01_31_18_20-b00)
>> OpenJDK 64-Bit Server VM (build 20.0-b06-fastdebug, mixed mode)
>> 
>> This is on Mac OS X 10.6.6
>> 
>> Attila.
> 
> Rémi