Hi folks,
This small testcase fails in MethodHandles.catchException() on MLVM:
import java.dyn.MethodHandle;
import java.dyn.MethodHandles;
import java.dyn.MethodType;
public class TestCatchException
{
public static void main(String[] args) throws Throwable
{
MethodHandle throwing = findStatic("throwing");
MethodHandle catching = findStatic("catching");
MethodHandles.catchException(throwing, MyException.class,
MethodHandles.dropArguments(catching, 0,
MyException.class));
}
private static class MyException extends RuntimeException
{
}
private static MethodHandle findStatic(String name)
{
return MethodHandles.publicLookup().findStatic(
TestCatchException.class, name,
MethodType.make(int.class,
Object.class));
}
public static int throwing(Object o)
{
throw new MyException();
}
public static int catching(Object o)
{
return 0;
}
}
Notably, it fails with:
Exception in thread "main" java.dyn.NoAccessException: cannot access:
*.java.dyn.MethodHandle.invoke(TestCatchException
$MyException,java.lang.Object)int
at sun.dyn.MemberName.newNoAccessException(MemberName.java:421)
at sun.dyn.MemberName.newNoAccessException(MemberName.java:412)
at sun.dyn.MemberName$Factory.resolveOrFail(MemberName.java:517)
at java.dyn.MethodHandles$Lookup.findVirtual(MethodHandles.java:267)
at sun.dyn.Invokers.exactInvoker(Invokers.java:66)
at java.dyn.MethodHandles.exactInvoker(MethodHandles.java:761)
at sun.dyn.FromGeneric.computeUnboxingInvoker(FromGeneric.java:137)
at sun.dyn.FromGeneric.makeInstance(FromGeneric.java:160)
at sun.dyn.FromGeneric.make(FromGeneric.java:174)
at sun.dyn.MethodHandleImpl.convertArguments(MethodHandleImpl.java:460)
at sun.dyn.MethodHandleImpl.makeGuardWithCatch(MethodHandleImpl.java:
840)
at java.dyn.MethodHandles.catchException(MethodHandles.java:1397)
at TestCatchException.main(TestCatchException.java:12)
However, if I replace "MyException" with an exception on the boot
classpath, i.e. IllegalArgumentException, then catchException() will
succeed. Any advice for a workaround?
Attila.
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