--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/verifier/TestANewArray.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2014, 2017, 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.
+ */
+
+import java.io.File;
+import java.io.FileOutputStream;
+
+import jdk.internal.org.objectweb.asm.ClassWriter;
+import jdk.internal.org.objectweb.asm.MethodVisitor;
+import static jdk.internal.org.objectweb.asm.Opcodes.*;
+
+import jdk.test.lib.process.ProcessTools;
+import jdk.test.lib.process.OutputAnalyzer;
+
+/*
+ * @test
+ * @summary Test that anewarray bytecode is valid only if it specifies 254 or fewer dimensions.
+ * 255 is invalid because the anewarray would then create an array with 256 dimensions.
+ * @library /test/lib
+ * @modules java.base/jdk.internal.org.objectweb.asm
+ * @compile -XDignore.symbol.file TestANewArray.java
+ * @run main/othervm TestANewArray 49
+ * @run main/othervm TestANewArray 52
+ */
+
+/*
+ * Testing anewarray instruction with 254, 255 & 264 dimensions to verify JVM Spec
+ * Section 4.9.1, Static Constraints that states the following:
+ *
+ * "No anewarray instruction may be used to create an array of more than 255 dimensions."
+ *
+ */
+
+public class TestANewArray {
+
+ static String classCName = null; // the generated class name
+
+ static final int test_Dimension_254 = 254; // should always pass
+ static final int test_Dimension_255 = 255; // should always pass, except for cfv 49
+ static final int test_Dimension_264 = 264; // should always fail
+
+ static final String array_Dimension_254 = genArrayDim(test_Dimension_254);
+ static final String array_Dimension_255 = genArrayDim(test_Dimension_255);
+ static final String array_Dimension_264 = genArrayDim(test_Dimension_264);
+
+ public static void main(String... args) throws Exception {
+ int cfv = Integer.parseInt(args[0]);
+
+ // 254 array dimensions
+ byte[] classFile_254 = dumpClassFile(cfv, test_Dimension_254, array_Dimension_254);
+ writeClassFileFromByteArray(classFile_254);
+ System.err.println("Running with cfv: " + cfv + ", test_Dimension_254");
+ ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, "-verify", "-cp", ".", classCName);
+ OutputAnalyzer output = new OutputAnalyzer(pb.start());
+ output.shouldNotContain("java.lang.VerifyError");
+ output.shouldHaveExitValue(0);
+
+ // 255 array dimensions
+ byte[] classFile_255 = dumpClassFile(cfv, test_Dimension_255, array_Dimension_255);
+ writeClassFileFromByteArray(classFile_255);
+ System.err.println("Running with cfv: " + cfv + ", test_Dimension_255");
+ pb = ProcessTools.createJavaProcessBuilder(true, "-verify", "-cp", ".", classCName);
+ output = new OutputAnalyzer(pb.start());
+ // If anewarray has an operand with 255 array dimensions then VerifyError should
+ // be thrown because the resulting array would have 256 dimensions.
+ output.shouldContain("java.lang.VerifyError");
+ // VerifyError exception messages differ between verifiers.
+ if (cfv == 49) {
+ output.shouldContain("Array with too many dimensions");
+ } else {
+ output.shouldContain("Illegal anewarray instruction, array has more than 255 dimensions");
+ }
+ output.shouldHaveExitValue(1);
+
+ // 264 array dimensions
+ byte[] classFile_264 = dumpClassFile(cfv, test_Dimension_264, array_Dimension_264);
+ writeClassFileFromByteArray(classFile_264);
+ System.err.println("Running with cfv: " + cfv + ", test_Dimension_264");
+ pb = ProcessTools.createJavaProcessBuilder(true, "-verify", "-cp", ".", classCName);
+ output = new OutputAnalyzer(pb.start());
+ output.shouldContain("java.lang.ClassFormatError");
+ output.shouldHaveExitValue(1);
+ }
+
+ public static byte[] dumpClassFile(int cfv, int testDimension264, String arrayDim) throws Exception {
+ ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
+ MethodVisitor mv;
+
+ classCName = "classCName_" + cfv + "_" + testDimension264;
+
+ cw.visit(cfv, ACC_PUBLIC + ACC_SUPER, classCName, null, "java/lang/Object", null);
+ {
+ mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
+ mv.visitCode();
+ mv.visitVarInsn(ALOAD, 0);
+ mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
+ mv.visitInsn(RETURN);
+ mv.visitMaxs(1, 1);
+ mv.visitEnd();
+ }
+ { // classCName main method
+ mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null);
+ mv.visitCode();
+ mv.visitIntInsn(BIPUSH, 1);
+ mv.visitTypeInsn(ANEWARRAY, arrayDim); // Test ANEWARRAY bytecode with various dimensions
+ mv.visitInsn(RETURN);
+ mv.visitMaxs(2, 2);
+ mv.visitEnd();
+ }
+ cw.visitEnd();
+ return cw.toByteArray();
+ }
+
+ public static FileOutputStream writeClassFileFromByteArray(byte[] classFileByteArray) throws Exception {
+ FileOutputStream fos = new FileOutputStream(new File(classCName + ".class"));
+ fos.write(classFileByteArray);
+ fos.close();
+ return fos;
+ }
+
+ private static String genArrayDim(int testDim) {
+ StringBuilder array_Dimension = new StringBuilder();
+ for (int i = 0; i < testDim; i++)
+ {
+ array_Dimension.append("[");
+ }
+ return array_Dimension.append("Ljava/lang/Object;").toString();
+ }
+}