[GROOVY-6199] @CompileStatic class throws runtime errors accessing outer class methods inside nested closures

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.4
• Fix Version/s: 2.1.7, 2.2.0-beta-2
• Component/s: Static compilation
• Environment: Windows 7, Java 6, Groovy 2.1.4
• Assignee: Jochen Theodorou
• Reporter: Brett Borchardt
• Created: 06/Jun/13 14:07
• Updated: 14/Oct/13 16:53
• Resolved: 20/Aug/13 02:38

Description

The following class throws an exception at runtime when executed. It works fine without @CompileStatic.

@groovy.transform.CompileStatic
class MyClass {
    public static void main(String[] args) {
        new MyClass().run()
    }

    void run() {
        1.times {
            1.times {
                myMethod()
            }
        }
    }

    void myMethod() {
        println 'hi'
    }
}

org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object 'MyClass$_run_closure1@4cf92ef9' with class 'MyClass$_run_closure1' to class 'MyClass'

at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.castToType(DefaultTypeTransformation.java:360)

at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.castToType(ScriptBytecodeAdapter.java:599)

at MyClass$_run_closure1_closure2.doCall(ConsoleScript0:10)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)

at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)

at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:272)

at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:909)

at groovy.lang.Closure.call(Closure.java:411)

at groovy.lang.Closure.call(Closure.java:427)

at org.codehaus.groovy.runtime.DefaultGroovyMethods.times(DefaultGroovyMethods.java:10646)

at MyClass$_run_closure1.doCall(ConsoleScript0:9)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)

at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)

at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:272)

at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:909)

at groovy.lang.Closure.call(Closure.java:411)

at groovy.lang.Closure.call(Closure.java:427)

at org.codehaus.groovy.runtime.DefaultGroovyMethods.times(DefaultGroovyMethods.java:10646)

at MyClass.run(ConsoleScript0:8)

at MyClass.main(ConsoleScript0:4)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)

at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)

at groovy.lang.MetaClassImpl.invokeStaticMethod(MetaClassImpl.java:1318)

at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:822)