T7093325.java revision 2942:08092deced3f 
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
38import java.io.File;
39import java.net.URI;
40import java.util.Arrays;
41import javax.tools.JavaCompiler;
42import javax.tools.JavaFileObject;
43import javax.tools.SimpleJavaFileObject;
44import javax.tools.ToolProvider;
45
46import com.sun.source.util.JavacTask;
47import com.sun.tools.classfile.Attribute;
48import com.sun.tools.classfile.ClassFile;
49import com.sun.tools.classfile.Code_attribute;
50import com.sun.tools.classfile.ConstantPool.*;
51import com.sun.tools.classfile.Method;
52
53public 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}
271