In GenJVM, one of the differences between genMethod and addStaticInit is that the latter doesn't add local vars. This is no problem with the current compilation pipeline (because no such vars show up). I'm applying an AST lowering that stores intermediate results in temp vars (to accomodate an MSIL restriction, "Attempt to enter try-block with non-empty stack") and with that static class initializers do get local temp vars.

The following additions in addStaticInit seems to do the trick, not sure what to do about legacyEmitBootstrapMethodInstall.

      mopt match {
       	case Some(m) =>

           computeLocalVarsIndex(m)   // <----- ADDED

           if (clasz.bootstrapClass.isDefined) legacyEmitBootstrapMethodInstall(clinit)

           assert(m.params.isEmpty)   
           for (local <- m.locals) { // <----- ADDED
             if (settings.debug.value)
               log("add local var: " + local)
             clinitMethod.addNewLocalVariable(javaType(local.kind), javaName(local.sym))
           }