Thu, 26 Mar 2015 11:34:50 +0100
8054220: Debugger doesn't show variables *outside* lambda
8058227: Debugger has no access to outer variables inside Lambda
Summary: Put local variables captured by lambda into the lambda method's LocalVariableTable.
Reviewed-by: mcimadamore, rfield
1 /*
2 * Copyright (c) 2014, 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
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22 */
24 /**
25 * @test
26 * @bug 8048121
27 * @summary javac complex method references: revamp and simplify
28 *
29 * Make sure that the method reference receiver is evaluated exactly once
30 * even in this bridging case.
31 */
33 public class MethodRefSingleRefEvalBridge {
35 interface SAM {
36 int m();
37 }
39 class ZZ {
40 // private to force bridging
41 private int four() { return 4; }
42 }
44 static int count = 0;
45 ZZ azz = new ZZ();
47 static void assertEqual(int expected, int got) {
48 if (got != expected)
49 throw new AssertionError("Expected " + expected + " got " + got);
50 }
52 public static void main(String[] args) {
53 new MethodRefSingleRefEvalBridge().test();
54 }
56 ZZ check() {
57 count++;
58 return azz;
59 }
61 void test() {
62 count = 0;
63 SAM s = check()::four;
64 assertEqual(1, count);
66 count = 0;
67 assertEqual(4, s.m());
68 assertEqual(0, count);
69 }
70 }