1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/*
* Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 8019486 8026861 8027142
* @summary javac, generates erroneous LVT for a test case with lambda code
* @library /tools/lib
* @modules jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.main
* jdk.compiler/com.sun.tools.javac.util
* jdk.jdeps/com.sun.tools.classfile
* @build toolbox.ToolBox toolbox.JavacTask
* @run main WrongLNTForLambdaTest
*/
import java.io.File;
import java.nio.file.Paths;
import com.sun.tools.classfile.ClassFile;
import com.sun.tools.classfile.Code_attribute;
import com.sun.tools.classfile.LineNumberTable_attribute;
import com.sun.tools.classfile.Method;
import com.sun.tools.javac.util.Assert;
import toolbox.JavacTask;
import toolbox.ToolBox;
public class WrongLNTForLambdaTest {
static final String testSource =
/* 01 */ "import java.util.List;\n" +
/* 02 */ "import java.util.Arrays;\n" +
/* 03 */ "import java.util.stream.Collectors;\n" +
/* 04 */ "\n" +
/* 05 */ "public class Foo {\n" +
/* 06 */ " void bar(int value) {\n" +
/* 07 */ " final List<Integer> numbers = Arrays.asList(1, 2, 3);\n" +
/* 08 */ " final List<Integer> numbersPlusOne = \n" +
/* 09 */ " numbers.stream().map(number -> number / 1).collect(Collectors.toList());\n" +
/* 10 */ " }\n" +
/* 11 */ " void variablesInLambdas(int value) {\n" +
/* 12 */ " Runnable r1 = () -> {\n" +
/* 13 */ " int i = value;\n" +
/* 14 */ " class FooBar<T extends CharSequence> {\n" +
/* 15 */ " public void run() {\n" +
/* 16 */ " T t = null;\n" +
/* 17 */ " }\n" +
/* 18 */ " }\n" +
/* 19 */ " };\n" +
/* 20 */ " Runnable r2 = () -> System.err.println(1);\n" +
/* 21 */ " Runnable r3 = (Runnable & java.io.Serializable) this::foo;\n" +
/* 22 */ " Runnable r4 = super :: notify;\n" +
/* 23 */ " }\n" +
/* 24 */ " private void foo() {}\n" +
/* 25 */ " void assignLambda() {\n" +
/* 26 */ " Runnable r = () -> { };\n" +
/* 27 */ " }\n" +
/* 28 */ " void callLambda(int i, Runnable r) {\n" +
/* 29 */ " callLambda(0,\n" +
/* 30 */ " () -> { });\n" +
/* 31 */ " }\n" +
/* 32 */ "}";
static final int[][] simpleLambdaExpectedLNT = {
// {line-number, start-pc},
{9, 0}, //number -> number / 1
};
static final int[][] lambdaWithVarsExpectedLNT = {
// {line-number, start-pc},
{13, 0}, //number -> number / 1
{19, 2}, //number -> number / 1
};
static final int[][] insideLambdaWithVarsExpectedLNT = {
// {line-number, start-pc},
{16, 0}, //number -> number / 1
{17, 2}, //number -> number / 1
};
static final int[][] lambdaVoid2VoidExpectedLNT = {
// {line-number, start-pc},
{20, 0}, //number -> number / 1
};
static final int[][] deserializeExpectedLNT = {
// {line-number, start-pc},
{05, 0}, //number -> number / 1
};
static final int[][] lambdaBridgeExpectedLNT = {
// {line-number, start-pc},
{22, 0}, //number -> number / 1
};
static final int[][] assignmentExpectedLNT = {
// {line-number, start-pc},
{26, 0}, //number -> number / 1
{27, 6}, //number -> number / 1
};
static final int[][] callExpectedLNT = {
// {line-number, start-pc},
{29, 0}, //number -> number / 1
{31, 10}, //number -> number / 1
};
public static void main(String[] args) throws Exception {
new WrongLNTForLambdaTest().run();
}
ToolBox tb = new ToolBox();
void run() throws Exception {
compileTestClass();
checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
"Foo.class").toUri()), "lambda$bar$0", simpleLambdaExpectedLNT);
checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
"Foo.class").toUri()), "lambda$variablesInLambdas$1", lambdaWithVarsExpectedLNT);
checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
"Foo$1FooBar.class").toUri()), "run", insideLambdaWithVarsExpectedLNT);
checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
"Foo.class").toUri()), "lambda$variablesInLambdas$2", lambdaVoid2VoidExpectedLNT);
checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
"Foo.class").toUri()), "$deserializeLambda$", deserializeExpectedLNT);
checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
"Foo.class").toUri()), "lambda$variablesInLambdas$3", lambdaBridgeExpectedLNT);
checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
"Foo.class").toUri()), "assignLambda", assignmentExpectedLNT);
checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
"Foo.class").toUri()), "callLambda", callExpectedLNT);
}
void compileTestClass() throws Exception {
new JavacTask(tb)
.sources(testSource)
.run();
}
void checkClassFile(final File cfile, String methodToFind, int[][] expectedLNT) throws Exception {
ClassFile classFile = ClassFile.read(cfile);
boolean methodFound = false;
for (Method method : classFile.methods) {
if (method.getName(classFile.constant_pool).equals(methodToFind)) {
methodFound = true;
Code_attribute code = (Code_attribute) method.attributes.get("Code");
LineNumberTable_attribute lnt =
(LineNumberTable_attribute) code.attributes.get("LineNumberTable");
Assert.check(lnt.line_number_table_length == expectedLNT.length,
"The LineNumberTable found has a length different to the expected one");
int i = 0;
for (LineNumberTable_attribute.Entry entry: lnt.line_number_table) {
Assert.check(entry.line_number == expectedLNT[i][0] &&
entry.start_pc == expectedLNT[i][1],
"LNT entry at pos " + i + " differ from expected." +
"Found " + entry.line_number + ":" + entry.start_pc +
". Expected " + expectedLNT[i][0] + ":" + expectedLNT[i][1]);
i++;
}
}
}
Assert.check(methodFound, "The seek method was not found");
}
void error(String msg) {
throw new AssertionError(msg);
}
}
|
