| /* |
| * @test /nodynamiccopyright/ |
| * @summary Negative regression test from odersky |
| * @author odersky |
| * |
| * @compile/fail/ref=BadTest.out -XDrawDiagnostics BadTest.java |
| */ |
| |
| class BadTest { |
| static class Main { |
| |
| static <B> List<B> nil() { return new List<B>(); } |
| static <A> List<A> cons(A x, List<A> xs) { return xs.prepend(x); } |
| static <A> Cell<A> makeCell(A x) { return new Cell<A>(x); } |
| static <A> A id(A x) { return x; } |
| |
| public static void main(String[] args) { |
| List<Cell<String>> as = nil().prepend(makeCell(null)); |
| List<Cell<String>> bs = cons(makeCell(null), nil()); |
| List<String> xs = id(nil()); |
| List<String> ys = cons("abc", id(nil())); |
| List<String> zs = id(nil()).prepend("abc"); |
| List<Cell<String>> us = id(nil()).prepend(makeCell(null)); |
| List<Cell<String>> vs = cons(makeCell(null), id(nil())); |
| System.out.println(nil() instanceof List<String>); |
| nil(); |
| } |
| |
| } |
| } |