Unchecked cast warning in javac

[Maaartinus]

This code produces a warning when compiled with javac:

public class WarningDemo {
    List<Integer> makeList() {
        return null;
    }

    @Getter(lazy=true) private final List<Integer> list = makeList();
}

With -Xlint I get

src/WarningDemo.java:10: warning: [unchecked] unchecked cast
    @Getter(lazy=true) private final List<Integer> list = makeList();
    ^
  required: List<Integer>
  found:    Object

The delomboked code has @java.lang.SuppressWarnings("all"), but either it doesn't help or the compilation works differently.

[sgrimm-sg]

Here's how we solved this:

@Getter(lazy = true, onMethod = @__({@SuppressWarnings("unchecked")}))

[Maaartinus]

This indeed helps, but

 @Getter(lazy = true, onMethod = @__({@SuppressWarnings("all")}))

does not. So "all" does not mean "all" at all. This helps too:

 @Getter(lazy = true, onMethod = @__({@SuppressWarnings({"unchecked", "all"})}))

[Maaartinus]

Duplicate of #880