1/* 2 * Copyright (c) 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test 26 * @bug 8008813 27 * @summary Structural most specific fails when method reference is passed to overloaded method 28 * @compile/fail/ref=MostSpecific08.out -XDrawDiagnostics MostSpecific08.java 29 */ 30class MostSpecific08 { 31 32 static class C { 33 int getInt() { return -1; } 34 Integer getInteger() { return -1; } 35 } 36 37 interface IntResult { } 38 interface ReferenceResult<X> { } 39 40 interface PrimitiveFunction { 41 int f(C c); 42 } 43 44 interface ReferenceFunction<X> { 45 X f(C c); 46 } 47 48 interface Tester { 49 IntResult apply(PrimitiveFunction p); 50 <Z> ReferenceResult<Z> apply(ReferenceFunction<Z> p); 51 } 52 53 void testMref(Tester t) { 54 IntResult pr = t.apply(C::getInt); //ok - unoverloaded mref 55 ReferenceResult<Integer> rr = t.apply(C::getInteger); //ok - unoverloaded mref 56 } 57 58 void testLambda(Tester t) { 59 IntResult pr1 = t.apply(c->c.getInt()); //ambiguous - implicit 60 IntResult pr2 = t.apply((C c)->c.getInt()); //ok 61 ReferenceResult<Integer> rr1 = t.apply(c->c.getInteger()); //ambiguous - implicit 62 ReferenceResult<Integer> rr2 = t.apply((C c)->c.getInteger()); //ok 63 } 64} 65