1 /*
2 * Copyright (c) 2015 SAP SE. 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 8141551
27 * @summary C2 can not handle returns with inccompatible interface arrays
28 * @modules java.base/jdk.internal.org.objectweb.asm
29 * java.base/jdk.internal.misc
30 * @library /testlibrary /test/lib
31 *
32 * @build sun.hotspot.WhiteBox
33 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
34 * sun.hotspot.WhiteBox$WhiteBoxPermission
35 * @run main/othervm
36 * -Xbootclasspath/a:.
37 * -XX:+UnlockDiagnosticVMOptions
38 * -XX:+WhiteBoxAPI
39 * -Xbatch
40 * -XX:CompileThreshold=1
41 * -XX:-TieredCompilation
42 * -XX:CICompilerCount=1
43 * -XX:+PrintCompilation
44 * -XX:+PrintInlining
45 * -XX:CompileCommand=compileonly,MeetIncompatibleInterfaceArrays*::run
46 * -XX:CompileCommand=dontinline,compiler.types.TestMeetIncompatibleInterfaceArrays$Helper::createI2*
47 * -XX:CompileCommand=quiet
48 * compiler.types.TestMeetIncompatibleInterfaceArrays 0
49 * @run main/othervm
50 * -Xbootclasspath/a:.
51 * -XX:+UnlockDiagnosticVMOptions
52 * -XX:+WhiteBoxAPI
53 * -Xbatch
54 * -XX:CompileThreshold=1
55 * -XX:-TieredCompilation
56 * -XX:CICompilerCount=1
57 * -XX:+PrintCompilation
58 * -XX:+PrintInlining
59 * -XX:CompileCommand=compileonly,MeetIncompatibleInterfaceArrays*::run
60 * -XX:CompileCommand=inline,compiler.types.TestMeetIncompatibleInterfaceArrays$Helper::createI2*
61 * -XX:CompileCommand=quiet
62 * compiler.types.TestMeetIncompatibleInterfaceArrays 1
63 * @run main/othervm
64 * -Xbootclasspath/a:.
65 * -XX:+UnlockDiagnosticVMOptions
66 * -XX:+WhiteBoxAPI
67 * -Xbatch
68 * -XX:CompileThreshold=1
69 * -XX:Tier0InvokeNotifyFreqLog=0 -XX:Tier2InvokeNotifyFreqLog=0 -XX:Tier3InvokeNotifyFreqLog=0 -XX:Tier23InlineeNotifyFreqLog=0
70 * -XX:Tier3InvocationThreshold=2 -XX:Tier3MinInvocationThreshold=2 -XX:Tier3CompileThreshold=2
71 * -XX:Tier4InvocationThreshold=1 -XX:Tier4MinInvocationThreshold=1 -XX:Tier4CompileThreshold=1
72 * -XX:+TieredCompilation
73 * -XX:CICompilerCount=2
74 * -XX:+PrintCompilation
75 * -XX:+PrintInlining
76 * -XX:CompileCommand=compileonly,MeetIncompatibleInterfaceArrays*::run
77 * -XX:CompileCommand=compileonly,compiler.types.TestMeetIncompatibleInterfaceArrays$Helper::createI2*
78 * -XX:CompileCommand=inline,compiler.types.TestMeetIncompatibleInterfaceArrays$Helper::createI2*
79 * -XX:CompileCommand=quiet
80 * compiler.types.TestMeetIncompatibleInterfaceArrays 2
81 *
82 * @author volker.simonis@gmail.com
83 */
84
85 package compiler.types;
86
87 import jdk.internal.org.objectweb.asm.ClassWriter;
88 import jdk.internal.org.objectweb.asm.MethodVisitor;
89 import sun.hotspot.WhiteBox;
90
91 import java.io.FileOutputStream;
92 import java.lang.reflect.InvocationTargetException;
93 import java.lang.reflect.Method;
94
95 import static jdk.internal.org.objectweb.asm.Opcodes.AALOAD;
96 import static jdk.internal.org.objectweb.asm.Opcodes.ACC_PUBLIC;
97 import static jdk.internal.org.objectweb.asm.Opcodes.ACC_STATIC;
98 import static jdk.internal.org.objectweb.asm.Opcodes.ALOAD;
99 import static jdk.internal.org.objectweb.asm.Opcodes.ARETURN;
100 import static jdk.internal.org.objectweb.asm.Opcodes.ASTORE;
101 import static jdk.internal.org.objectweb.asm.Opcodes.GETSTATIC;
102 import static jdk.internal.org.objectweb.asm.Opcodes.ICONST_0;
103 import static jdk.internal.org.objectweb.asm.Opcodes.INVOKEINTERFACE;
104 import static jdk.internal.org.objectweb.asm.Opcodes.INVOKESPECIAL;
105 import static jdk.internal.org.objectweb.asm.Opcodes.INVOKESTATIC;
106 import static jdk.internal.org.objectweb.asm.Opcodes.INVOKEVIRTUAL;
107 import static jdk.internal.org.objectweb.asm.Opcodes.RETURN;
108 import static jdk.internal.org.objectweb.asm.Opcodes.V1_8;
109
110 public class TestMeetIncompatibleInterfaceArrays extends ClassLoader {
111
112 private static final WhiteBox WB = WhiteBox.getWhiteBox();
113
114 public static interface I1 { public String getName(); }
115 public static interface I2 { public String getName(); }
116 public static class I2C implements I2 { public String getName() { return "I2";} }
117 public static class I21C implements I2, I1 { public String getName() { return "I2 and I1";} }
118
119 public static class Helper {
120 public static I2 createI2Array0() {
121 return new I2C();
122 }
123 public static I2[] createI2Array1() {
124 return new I2C[] { new I2C() };
125 }
126 public static I2[][] createI2Array2() {
127 return new I2C[][] { new I2C[] { new I2C() } };
128 }
129 public static I2[][][] createI2Array3() {
130 return new I2C[][][] { new I2C[][] { new I2C[] { new I2C() } } };
131 }
132 public static I2[][][][] createI2Array4() {
133 return new I2C[][][][] { new I2C[][][] { new I2C[][] { new I2C[] { new I2C() } } } };
134 }
135 public static I2[][][][][] createI2Array5() {
136 return new I2C[][][][][] { new I2C[][][][] { new I2C[][][] { new I2C[][] { new I2C[] { new I2C() } } } } };
137 }
138 public static I2 createI21Array0() {
139 return new I21C();
140 }
141 public static I2[] createI21Array1() {
142 return new I21C[] { new I21C() };
143 }
144 public static I2[][] createI21Array2() {
145 return new I21C[][] { new I21C[] { new I21C() } };
146 }
147 public static I2[][][] createI21Array3() {
148 return new I21C[][][] { new I21C[][] { new I21C[] { new I21C() } } };
149 }
150 public static I2[][][][] createI21Array4() {
151 return new I21C[][][][] { new I21C[][][] { new I21C[][] { new I21C[] { new I21C() } } } };
152 }
153 public static I2[][][][][] createI21Array5() {
154 return new I21C[][][][][] { new I21C[][][][] { new I21C[][][] { new I21C[][] { new I21C[] { new I21C() } } } } };
155 }
156 }
157
158 // Location for the generated class files
159 public static final String PATH = System.getProperty("test.classes", ".") + java.io.File.separator;
160
161 /*
162 * With 'good == false' this helper method creates the following classes
163 * (using the nested 'Helper' class and the nested interfaces 'I1' and 'I2').
164 * For brevity I omit the enclosing class 'TestMeetIncompatibleInterfaceArrays' in the
165 * following examples:
166 *
167 * public class MeetIncompatibleInterfaceArrays0ASM {
168 * public static I1 run() {
169 * return Helper.createI2Array0(); // returns I2
170 * }
171 * public static void test() {
172 * I1 i1 = run();
173 * System.out.println(i1.getName());
174 * }
175 * }
176 * public class MeetIncompatibleInterfaceArrays1ASM {
177 * public static I1[] run() {
178 * return Helper.createI2Array1(); // returns I2[]
179 * }
180 * public static void test() {
181 * I1[] i1 = run();
182 * System.out.println(i1[0].getName());
183 * }
184 * }
185 * ...
186 * // MeetIncompatibleInterfaceArrays4ASM is special because it creates
187 * // an illegal class which will be rejected by the verifier.
188 * public class MeetIncompatibleInterfaceArrays4ASM {
189 * public static I1[][][][] run() {
190 * return Helper.createI2Array3(); // returns I1[][][] which gives a verifier error because return expects I1[][][][]
191 * }
192 * public static void test() {
193 * I1[][][][][] i1 = run();
194 * System.out.println(i1[0][0][0][0][0].getName());
195 * }
196 * ...
197 * public class MeetIncompatibleInterfaceArrays5ASM {
198 * public static I1[][][][][] run() {
199 * return Helper.createI2Array5(); // returns I2[][][][][]
200 * }
201 * public static void test() {
202 * I1[][][][][] i1 = run();
203 * System.out.println(i1[0][0][0][0][0].getName());
204 * }
205 * }
206 *
207 * Notice that this is not legal Java code. We would have to use a cast in "run()" to make it legal:
208 *
209 * public static I1[] run() {
210 * return (I1[])Helper.createI2Array1(); // returns I2[]
211 * }
212 *
213 * But in pure bytecode, the "run()" methods are perfectly legal:
214 *
215 * public static I1[] run();
216 * Code:
217 * 0: invokestatic #16 // Method Helper.createI2Array1:()[LI2;
218 * 3: areturn
219 *
220 * The "test()" method calls the "getName()" function from I1 on the objects returned by "run()".
221 * This will epectedly fail with an "IncompatibleClassChangeError" because the objects returned
222 * by "run()" (and by createI2Array()) are actually of type "I2C" and only implement "I2" but not "I1".
223 *
224 *
225 * With 'good == true' this helper method will create the following classes:
226 *
227 * public class MeetIncompatibleInterfaceArraysGood0ASM {
228 * public static I1 run() {
229 * return Helper.createI21Array0(); // returns I2
230 * }
231 * public static void test() {
232 * I1 i1 = run();
233 * System.out.println(i1.getName());
234 * }
235 * }
236 *
237 * Calling "test()" on these objects will succeed and output "I2 and I1" because now the "run()"
238 * method calls "createI21Array()" which actually return an object (or an array of objects) of
239 * type "I21C" which implements both "I2" and "I1".
240 *
241 * Notice that at the bytecode level, the code for the "run()" and "test()" methods in
242 * "MeetIncompatibleInterfaceArraysASM" and "MeetIncompatibleInterfaceArraysGoodASM" look exactly
243 * the same. I.e. the verifier has no chance to verify if the I2 object returned by "createI1Array()"
244 * or "createI21Array()" implements "I1" or not. That's actually the reason why both versions of
245 * generated classes are legal from a verifier point of view.
246 *
247 */
248 static void generateTestClass(int dim, boolean good) throws Exception {
249 String baseClassName = "MeetIncompatibleInterfaceArrays";
250 if (good)
251 baseClassName += "Good";
252 String createName = "createI2" + (good ? "1" : "") + "Array";
253 String a = "";
254 for (int i = 0; i < dim; i++)
255 a += "[";
256 ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
257 cw.visit(V1_8, ACC_PUBLIC, baseClassName + dim + "ASM", null, "java/lang/Object", null);
258 MethodVisitor constr = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
259 constr.visitCode();
260 constr.visitVarInsn(ALOAD, 0);
261 constr.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
262 constr.visitInsn(RETURN);
263 constr.visitMaxs(0, 0);
264 constr.visitEnd();
265 MethodVisitor run = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "run",
266 "()" + a + "Lcompiler/types/TestMeetIncompatibleInterfaceArrays$I1;", null, null);
267 run.visitCode();
268 if (dim == 4) {
269 run.visitMethodInsn(INVOKESTATIC, "compiler/types/TestMeetIncompatibleInterfaceArrays$Helper", createName + 3,
270 "()" + "[[[" + "Lcompiler/types/TestMeetIncompatibleInterfaceArrays$I2;", false);
271 } else {
272 run.visitMethodInsn(INVOKESTATIC, "compiler/types/TestMeetIncompatibleInterfaceArrays$Helper", createName + dim,
273 "()" + a + "Lcompiler/types/TestMeetIncompatibleInterfaceArrays$I2;", false);
274 }
275 run.visitInsn(ARETURN);
276 run.visitMaxs(0, 0);
277 run.visitEnd();
278 MethodVisitor test = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "test", "()V", null, null);
279 test.visitCode();
280 test.visitMethodInsn(INVOKESTATIC, baseClassName + dim + "ASM", "run",
281 "()" + a + "Lcompiler/types/TestMeetIncompatibleInterfaceArrays$I1;", false);
282 test.visitVarInsn(ASTORE, 0);
283 if (dim > 0) {
284 test.visitVarInsn(ALOAD, 0);
285 for (int i = 1; i <= dim; i++) {
286 test.visitInsn(ICONST_0);
287 test.visitInsn(AALOAD);
288 }
289 test.visitVarInsn(ASTORE, 1);
290 }
291 test.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
292 test.visitVarInsn(ALOAD, dim > 0 ? 1 : 0);
293 test.visitMethodInsn(INVOKEINTERFACE, "compiler/types/TestMeetIncompatibleInterfaceArrays$I1", "getName",
294 "()Ljava/lang/String;", true);
295 test.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/Object;)V", false);
296 test.visitInsn(RETURN);
297 test.visitMaxs(0, 0);
298 test.visitEnd();
299
300 // Get the bytes of the class..
301 byte[] b = cw.toByteArray();
302 // ..and write them into a class file (for debugging)
303 FileOutputStream fos = new FileOutputStream(PATH + baseClassName + dim + "ASM.class");
304 fos.write(b);
305 fos.close();
306
307 }
308
309 public static String[][] tier = { { "interpreted", "C2 (tier 4) without inlining", "C2 (tier4) without inlining" },
310 { "interpreted", "C2 (tier 4) with inlining", "C2 (tier4) with inlining" },
311 { "interpreted", "C1 (tier 3) with inlining", "C2 (tier4) with inlining" } };
312
313 public static void main(String[] args) throws Exception {
314 final int pass = Integer.parseInt(args.length > 0 ? args[0] : "0");
315
316 // Load and initialize some classes required for compilation
317 Class.forName("compiler.types.TestMeetIncompatibleInterfaceArrays$I1");
318 Class.forName("compiler.types.TestMeetIncompatibleInterfaceArrays$I2");
319 Class.forName("compiler.types.TestMeetIncompatibleInterfaceArrays$Helper");
320
321 for (int g = 0; g < 2; g++) {
322 String baseClassName = "MeetIncompatibleInterfaceArrays";
323 boolean good = (g == 0) ? false : true;
324 if (good)
325 baseClassName += "Good";
326 for (int i = 0; i < 6; i++) {
327 System.out.println();
328 System.out.println("Creating " + baseClassName + i + "ASM.class");
329 System.out.println("========================================" + "=" + "=========");
330 // Create the "MeetIncompatibleInterfaceArrays<i>ASM" class
331 generateTestClass(i, good);
332 Class<?> c = null;
333 try {
334 c = Class.forName(baseClassName + i + "ASM");
335 } catch (VerifyError ve) {
336 if (i == 4) {
337 System.out.println("OK - must be (" + ve.getMessage() + ").");
338 } else {
339 throw ve;
340 }
341 continue;
342 }
343 // Call MeetIncompatibleInterfaceArrays<i>ASM.test()
344 Method m = c.getMethod("test");
345 Method r = c.getMethod("run");
346 for (int j = 0; j < 3; j++) {
347 System.out.println((j + 1) + ". invokation of " + baseClassName + i + "ASM.test() [should be "
348 + tier[pass][j] + "]");
349 try {
350 m.invoke(null);
351 } catch (InvocationTargetException ite) {
352 if (good) {
353 throw ite;
354 } else {
355 if (ite.getCause() instanceof IncompatibleClassChangeError) {
356 System.out.println(" OK - catched InvocationTargetException("
357 + ite.getCause().getMessage() + ").");
358 } else {
359 throw ite;
360 }
361 }
362 }
363 }
364 System.out.println("Method " + r + (WB.isMethodCompiled(r) ? " has" : " has not") + " been compiled.");
365 if (!WB.isMethodCompiled(r)) {
366 throw new Exception("Method " + r + " must be compiled!");
367 }
368 }
369 }
370 }
371 }