test/tools/javac/generics/T4711570.java

Sat, 07 Nov 2020 10:30:02 +0800

author
aoqi
date
Sat, 07 Nov 2020 10:30:02 +0800
changeset 3938
93012e2a5d1d
parent 2525
2eb010b6cb22
permissions
-rw-r--r--

Added tag mips-jdk8u275-b01 for changeset eb6ee6a5f2fe

aoqi@0 1 /*
aoqi@0 2 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
aoqi@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0 4 *
aoqi@0 5 * This code is free software; you can redistribute it and/or modify it
aoqi@0 6 * under the terms of the GNU General Public License version 2 only, as
aoqi@0 7 * published by the Free Software Foundation.
aoqi@0 8 *
aoqi@0 9 * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0 12 * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0 13 * accompanied this code).
aoqi@0 14 *
aoqi@0 15 * You should have received a copy of the GNU General Public License version
aoqi@0 16 * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0 18 *
aoqi@0 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0 20 * or visit www.oracle.com if you need additional information or have any
aoqi@0 21 * questions.
aoqi@0 22 */
aoqi@0 23
aoqi@0 24 /*
aoqi@0 25 * @test
aoqi@0 26 * @bug 4711570
aoqi@0 27 * @summary generics: problem with methods when type parameter doesn't appear in signature
aoqi@0 28 * @author gafter
aoqi@0 29 *
aoqi@0 30 * @compile T4711570.java
aoqi@0 31 */
aoqi@0 32
aoqi@0 33 class T4711570 {
aoqi@0 34 public static int fi() {
aoqi@0 35 return fi();
aoqi@0 36 }
aoqi@0 37
aoqi@0 38 public static void gi() {
aoqi@0 39 fi();
aoqi@0 40 gi();
aoqi@0 41 }
aoqi@0 42
aoqi@0 43 public static <T> int f() {
aoqi@0 44 return f();
aoqi@0 45 }
aoqi@0 46
aoqi@0 47 public static <T> void g() {
aoqi@0 48 f(); // incompatible.types found: <T>int required: java.lang.Object
aoqi@0 49 int i = f(); // workaround for f()
aoqi@0 50 g(); // incompatible.types found: <T>void required: java.lang.Object
aoqi@0 51 }
aoqi@0 52 // required type looks strange
aoqi@0 53
aoqi@0 54 public static <T> void h() {
aoqi@0 55 g(); // incompatible.types found: <T>void required: java.lang.Object
aoqi@0 56 }
aoqi@0 57
aoqi@0 58 public static <T> int f(T x) {
aoqi@0 59 return f(x);
aoqi@0 60 }
aoqi@0 61
aoqi@0 62 public static <T> void g(T x) {
aoqi@0 63 f(x);
aoqi@0 64 g(x); // incompatible.types found: <T>void required: java.lang.Object
aoqi@0 65 }
aoqi@0 66
aoqi@0 67 public static <T> void h(T x) {
aoqi@0 68 g(x); // works fine now; why not in void g(T x)?
aoqi@0 69 }
aoqi@0 70 }

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