1 /* 2 * Copyright 2002-2003 Sun Microsystems, Inc. All Rights Reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 */ 23 24 /* 25 * @test 26 * @ bug 27 * @summary Positive regression test from odersky 28 * @author odersky 29 * 30 * @compile Test4.java 31 */ 32 33 class Test4 { 34 interface I {} 35 interface J {} 36 static class C implements I, J {} 37 static class D implements I, J {} 38 39 interface Ord {} 40 41 static C c = new C(); 42 static D d = new D(); 43 44 static <B> List<B> nil() { return new List<B>(); } 45 static <A, B extends A> A f(A x, B y) { return x; } 46 static <A, B extends A> B g(List<A> x, List<B> y) { return y.head; } 47 48 static <A> List<A> cons(A x, List<A> xs) { return xs.prepend(x); } 49 static <A> Cell<A> makeCell(A x) { return new Cell<A>(x); } 50 static <A> A id(A x) { return x; } 51 52 static Integer i = new Integer(1); 53 static Number n = i; 54 55 public static void main(String[] args) { 56 Number x = f(n, i); 57 String xy = g(cons("abc", Test4.<String>nil()), Test4.<String>nil()); 58 System.out.println(g(cons("abc", nil()), nil())); 59 } 60 }