1 /*
2 * Copyright (c) 2011, 2015, 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 7093325 8006694
27 * @summary Redundant entry in bytecode exception table
28 * temporarily workaround combo tests are causing time out in several platforms
29 * @library lib
30 * @modules jdk.jdeps/com.sun.tools.classfile
31 * @build JavacTestingAbstractThreadedTest
32 * @run main/othervm T7093325
33 */
34
35 // use /othervm to avoid jtreg timeout issues (CODETOOLS-7900047)
36 // see JDK-8006746
37
38 import java.io.File;
39 import java.net.URI;
40 import java.util.Arrays;
41 import javax.tools.JavaCompiler;
42 import javax.tools.JavaFileObject;
43 import javax.tools.SimpleJavaFileObject;
44 import javax.tools.ToolProvider;
45
46 import com.sun.source.util.JavacTask;
47 import com.sun.tools.classfile.Attribute;
48 import com.sun.tools.classfile.ClassFile;
49 import com.sun.tools.classfile.Code_attribute;
50 import com.sun.tools.classfile.ConstantPool.*;
51 import com.sun.tools.classfile.Method;
52
53 public class T7093325
54 extends JavacTestingAbstractThreadedTest
55 implements Runnable {
56
57 enum StatementKind {
58 THROW("throw new RuntimeException();", false, false),
59 RETURN_NONEMPTY("System.out.println(); return;", true, false),
60 RETURN_EMPTY("return;", true, true),
61 APPLY("System.out.println();", true, false);
62
63 String stmt;
64 boolean canInline;
65 boolean empty;
66
67 private StatementKind(String stmt, boolean canInline, boolean empty) {
68 this.stmt = stmt;
69 this.canInline = canInline;
70 this.empty = empty;
71 }
72 }
73
74 enum CatchArity {
75 NONE(""),
76 ONE("catch (A a) { #S1 }"),
77 TWO("catch (B b) { #S2 }"),
78 THREE("catch (C c) { #S3 }"),
79 FOUR("catch (D d) { #S4 }");
80
81 String catchStr;
82
83 private CatchArity(String catchStr) {
84 this.catchStr = catchStr;
85 }
86
87 String catchers() {
88 if (this.ordinal() == 0) {
89 return catchStr;
90 } else {
91 return CatchArity.values()[this.ordinal() - 1].catchers() +
92 catchStr;
93 }
94 }
95 }
96
97 public static void main(String... args) throws Exception {
98 for (CatchArity ca : CatchArity.values()) {
99 for (StatementKind stmt0 : StatementKind.values()) {
100 if (ca.ordinal() == 0) {
101 pool.execute(new T7093325(ca, stmt0));
102 continue;
103 }
104 for (StatementKind stmt1 : StatementKind.values()) {
105 if (ca.ordinal() == 1) {
106 pool.execute(new T7093325(ca, stmt0, stmt1));
107 continue;
108 }
109 for (StatementKind stmt2 : StatementKind.values()) {
110 if (ca.ordinal() == 2) {
111 pool.execute(new T7093325(ca, stmt0, stmt1, stmt2));
112 continue;
113 }
114 for (StatementKind stmt3 : StatementKind.values()) {
115 if (ca.ordinal() == 3) {
116 pool.execute(
117 new T7093325(ca, stmt0, stmt1, stmt2, stmt3));
118 continue;
119 }
120 for (StatementKind stmt4 : StatementKind.values()) {
121 if (ca.ordinal() == 4) {
122 pool.execute(
123 new T7093325(ca, stmt0, stmt1,
124 stmt2, stmt3, stmt4));
125 continue;
126 }
127 for (StatementKind stmt5 : StatementKind.values()) {
128 pool.execute(
129 new T7093325(ca, stmt0, stmt1, stmt2,
130 stmt3, stmt4, stmt5));
131 }
132 }
133 }
134 }
135 }
136 }
137 }
138
139 checkAfterExec();
140 }
141
142 /** instance decls **/
143
144 CatchArity ca;
145 StatementKind[] stmts;
146
147 public T7093325(CatchArity ca, StatementKind... stmts) {
148 this.ca = ca;
149 this.stmts = stmts;
150 }
151
152 @Override
153 public void run() {
154 int id = checkCount.incrementAndGet();
155 final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
156 JavaSource source = new JavaSource(id);
157 JavacTask ct = (JavacTask)tool.getTask(null, fm.get(), null,
158 null, null, Arrays.asList(source));
159 ct.call();
160 verifyBytecode(source, id);
161 }
162
163 void verifyBytecode(JavaSource source, int id) {
164 boolean lastInlined = false;
165 boolean hasCode = false;
166 int gapsCount = 0;
167 for (int i = 0; i < stmts.length ; i++) {
168 lastInlined = stmts[i].canInline;
169 hasCode = hasCode || !stmts[i].empty;
170 if (lastInlined && hasCode) {
171 hasCode = false;
172 gapsCount++;
173 }
174 }
175 if (!lastInlined) {
176 gapsCount++;
177 }
178
179 File compiledTest = new File(String.format("Test%s.class", id));
180 try {
181 ClassFile cf = ClassFile.read(compiledTest);
182 if (cf == null) {
183 throw new Error("Classfile not found: " +
184 compiledTest.getName());
185 }
186
187 Method test_method = null;
188 for (Method m : cf.methods) {
189 if (m.getName(cf.constant_pool).equals("test")) {
190 test_method = m;
191 break;
192 }
193 }
194
195 if (test_method == null) {
196 throw new Error("Method test() not found in class Test");
197 }
198
199 Code_attribute code = null;
200 for (Attribute a : test_method.attributes) {
201 if (a.getName(cf.constant_pool).equals(Attribute.Code)) {
202 code = (Code_attribute)a;
203 break;
204 }
205 }
206
207 if (code == null) {
208 throw new Error("Code attribute not found in method test()");
209 }
210
211 int actualGapsCount = 0;
212 for (int i = 0; i < code.exception_table_length ; i++) {
213 int catchType = code.exception_table[i].catch_type;
214 if (catchType == 0) { //any
215 actualGapsCount++;
216 }
217 }
218
219 if (actualGapsCount != gapsCount) {
220 throw new Error("Bad exception table for test()\n" +
221 "expected gaps: " + gapsCount + "\n" +
222 "found gaps: " + actualGapsCount + "\n" +
223 source);
224 }
225 } catch (Exception e) {
226 e.printStackTrace();
227 throw new Error("error reading " + compiledTest +": " + e);
228 }
229
230 }
231
232 class JavaSource extends SimpleJavaFileObject {
233
234 static final String source_template =
235 "class A extends RuntimeException {} \n" +
236 "class B extends RuntimeException {} \n" +
237 "class C extends RuntimeException {} \n" +
238 "class D extends RuntimeException {} \n" +
239 "class E extends RuntimeException {} \n" +
240 "class Test#ID {\n" +
241 " void test() {\n" +
242 " try { #S0 } #C finally { System.out.println(); }\n" +
243 " }\n" +
244 "}";
245
246 String source;
247
248 public JavaSource(int id) {
249 super(URI.create(String.format("myfo:/Test%s.java", id)),
250 JavaFileObject.Kind.SOURCE);
251 source = source_template.replace("#C", ca.catchers());
252 source = source.replace("#S0", stmts[0].stmt);
253 source = source.replace("#ID", String.valueOf(id));
254 for (int i = 1; i < ca.ordinal() + 1; i++) {
255 source = source.replace("#S" + i, stmts[i].stmt);
256 }
257 }
258
259 @Override
260 public String toString() {
261 return source;
262 }
263
264 @Override
265 public CharSequence getCharContent(boolean ignoreEncodingErrors) {
266 return source;
267 }
268 }
269
270 }