Error compiling closures at class level

This code doesn't compile:

 
    static GroovyCache rabattDescCache = new GroovyCache (Desc.class, 'id') { company, id ->
    }

I get an error marker at "company" saying: Groovy:unexpected token company @line....

GroovyCache is a Java class with this constructor:

 
    public GroovyCache (Class cacheName, String subName, Closure cacheEntryFactory)

When I switch back to the 1.6 compiler by deleting the entry in bundles.info, the project compiles.

I'm not sure whether the bug is in the Eclipse plugin or the 1.7 Groovy compiler. This bug also existed in m1.