Error message for out of scope variables

if you enable the compiler checks in JSR-2 and write the method as part of a class, then groovy will inform you that s is undeclared two times. One for s="bbb" and the other for s.trim(). For scripts I am unsure how to solve this

See
https://bugs.eclipse.org/bugs/show_bug.cgi?id=36246

This may be a bug in Sun's bytecode verification implementation.

It may well turn out to be a verifier problem but the question is why is Groovy getting this? The Java code:

public class GROOVY_338 {
String s = "" ;
public void testUno ( ) {
try { s = "bbb" ; } finally { s.trim ( ) ; }
}
}

compiles fine whereas the Groovy script:

String s = "" ;
void testUno ( ) {
try { s = "bbb" ; } finally { s.trim ( ) ; }
}

which should, in principle be the same causes :

Caught: java.lang.VerifyError: (class: GROOVY_338, method: testUno signature: ()V) Register 1 contains wrong type

running on JDK1.5.0_03. So the problem is not the code per se but the way in which Groovy handles the code. Interestingly, or not, the Groovy class:

class GROOVY_338 {
String s = "" ;
void testUno ( ) {
try { s = "bbb" ; } } finally { s.trim ( ) ; }
}
}

compiles fine (bur fails to execute as there is no main.

it's possible that the String s= "" is not seen because the field is private and groovy has problems when accessing private fields. If so then the s="bbb" would declare a variable s for the try part which is invisible for the finally part... maybe some part in ACG does not know this and tries to access a nonexistant local var...

the new bahaivior is that the code will fail in a class since s is not defined first. In a script the method does now use the binding, which menas s is available