javac throws NullPointerException when using val into labeled loop.

[lombokissues]

Migrated from Google Code (issue 299)

[lombokissues]

👤 buzz.taiki   🕗 Nov 18, 2011 at 20:56 UTC

What steps will reproduce the problem?

1. Compiles following code with javac:
   import java.util.List;
   import java.util.ArrayList;
   import lombok.val;

public class A {
public static void main(String[] args) throws Exception {
List<String> a = new ArrayList<String>();
LABEL: for (val x : a) {
System.out.println(x);
}
}
}

1. NullpointerException is thrown as followings:
   javac -cp lombok.jar A.java
   error: Lombok visitor handler class lombok.javac.handlers.HandleVal failed: java.lang.NullPointerException
   java.lang.NullPointerException
   at com.sun.tools.javac.code.Types$MapVisitor.visit(Types.java:3270)
   at com.sun.tools.javac.code.Types.upperBound(Types.java:95)
   at lombok.javac.JavacResolution.ifTypeIsIterableToComponent(JavacResolution.java:349)
   at lombok.javac.handlers.HandleVal.visitLocal(HandleVal.java:109)
   ...
   at lombok.javac.JavacNode.traverse(JavacNode.java:63)
   at lombok.javac.JavacAST.traverse(JavacAST.java:117)
   ...
   at com.sun.tools.javac.Main.main(Main.java:54)
   1 error

What is the expected output? What do you see instead?
Don't throws exception.

What version of the product are you using? On what operating system?
0.10.2

Please provide any additional information below.

[lombokissues]

👤 reinierz   🕗 Nov 20, 2011 at 15:21 UTC

Confirmed. Simplified testcase:

class A {
{
LABEL: for (lombok.val x : new String[0]) ;
}
}

Note that this problem only occurs in javac; eclipse is just fine.

[lombokissues]

👤 reinierz   🕗 Nov 20, 2011 at 18:05 UTC

[lombokissues]

👤 reinierz   🕗 Nov 20, 2011 at 18:05 UTC

Fixed in 3b921ad and will be in the version after 0.10.2.

[lombokissues]

👤 reinierz   🕗 Nov 21, 2011 at 23:03 UTC

Now in release 0.10.4

[lombokissues]

End of migration