Cannot concatenate late static binding class name

[danog]

Code:

<?php

class a
{
    public static function test() {
        var_dump(''.static::class);
    }
}
a::test();

Result:

[daniil@daniil-arch jav]$ jppm start
-> linux
-> app:run 
-> install 
java.lang.VerifyError: Bad type on operand stack
Exception Details:
  Location:
    $php_module_m6f748827be7a4d14956c5053c7c41744_class0.test$0(Lphp/runtime/env/Environment;[Lphp/runtime/Memory;)Lphp/runtime/Memory; @7: invokestatic
  Reason:
    Type 'java/lang/String' (current frame, stack[2]) is not assignable to 'php/runtime/Memory'
  Current Frame:
    bci: @7
    flags: { }
    locals: { 'php/runtime/env/Environment', '[Lphp/runtime/Memory;' }
    stack: { 'php/runtime/env/Environment', 'java/lang/String', 'java/lang/String' }
  Bytecode:
    0x0000000: 2a12 282a b600 2eb8 0034 b800 3a01 b800
    0x0000010: 4057 b200 46b0                         

        at java.lang.Class.getDeclaredConstructors0(Native Method)
        at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
        at java.lang.Class.getConstructor0(Class.java:3075)
        at java.lang.Class.getConstructor(Class.java:1825)
        at php.runtime.reflection.ClassEntity.setNativeClazz(ClassEntity.java:855)
        at php.runtime.loader.RuntimeClassLoader.loadClass(RuntimeClassLoader.java:55)
        at php.runtime.loader.RuntimeClassLoader.loadModule(RuntimeClassLoader.java:113)
        at php.runtime.env.CompileScope.loadModule(CompileScope.java:599)
        at php.runtime.env.CompileScope.loadModule(CompileScope.java:603)
        at php.runtime.env.Environment.importModule(Environment.java:1253)
        at php.runtime.env.ConcurrentEnvironment.importModule(ConcurrentEnvironment.java:175)
        at php.runtime.env.ModuleManager.fetchTemporaryModule(ModuleManager.java:71)
        at php.runtime.env.ModuleManager.fetchModule(ModuleManager.java:41)
        at php.runtime.env.ModuleManager.fetchModule(ModuleManager.java:27)
        at php.runtime.launcher.Launcher.loadFrom(Launcher.java:121)
        at php.runtime.launcher.Launcher.run(Launcher.java:308)
        at php.runtime.launcher.Launcher.run(Launcher.java:247)
        at php.runtime.launcher.Launcher.run(Launcher.java:243)
        at php.runtime.launcher.Launcher.main(Launcher.java:425)