A compilation error in AbstractTypeMap, R3

[trustin]

I don't get a compilation error when I build R3 with Ant, but Eclipse always shows a compilation error in AbstractTypeMap. It's 50th line:

public Set<Entry<? extends B>> entrySet() {
 return entrySet;
 }

saying that 'the return tpe is incompatible with TypeMap.entrySet().'

Any clue? I am using JDK 6 both in Eclipse and Ant (i.e. command line).

[dmlloyd]

I think this must be an eclipse bug, since IDEA doesn't complain about it and it builds OK with ant in both JDK 1.5 and 1.6. There's certainly nothing syntactically wrong with the line that I can see...