| // Copyright (c) 2020, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.cf; |
| |
| import static org.hamcrest.CoreMatchers.containsString; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| import org.objectweb.asm.ClassWriter; |
| import org.objectweb.asm.Label; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Opcodes; |
| |
| @RunWith(Parameterized.class) |
| public class StackMapFlagThisUninitTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withCfRuntimes().build(); |
| } |
| |
| public StackMapFlagThisUninitTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testRuntime() throws Exception { |
| testForRuntime(parameters) |
| .addProgramClasses(Main.class) |
| .addProgramClassFileData(ADump.dump()) |
| .run(parameters.getRuntime(), Main.class) |
| .assertFailureWithErrorThatMatches( |
| containsString( |
| "Exception in thread \"main\" java.lang.VerifyError: Inconsistent stackmap frames" |
| + " at branch target 22")); |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(Main.class) |
| .addProgramClassFileData(ADump.dump()) |
| .addKeepAllClassesRule() |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("foo"); |
| } |
| |
| public static class Main { |
| |
| public static void main(String[] args) { |
| new A(0); |
| } |
| } |
| |
| public static class A { |
| |
| public A(int i) {} |
| } |
| |
| // TODO(b/166738818): This is the bytecode generated from the constructor merging in |
| // https://r8-review.googlesource.com/c/r8/+/53180/3. |
| // The important thing here is that the instantiation of this is not performed in one case |
| // and we fail to create a proper stack map entry for uninitializedThis. |
| public static class ADump implements Opcodes { |
| |
| public static byte[] dump() { |
| |
| ClassWriter classWriter = new ClassWriter(0); |
| MethodVisitor methodVisitor; |
| |
| classWriter.visit( |
| V1_8, |
| ACC_PUBLIC | ACC_SUPER, |
| "com/android/tools/r8/cf/StackMapFlagThisUninitTest$A", |
| null, |
| "java/lang/Object", |
| null); |
| |
| { |
| methodVisitor = classWriter.visitMethod(ACC_PUBLIC, "<init>", "(I)V", null, null); |
| methodVisitor.visitCode(); |
| methodVisitor.visitVarInsn(ILOAD, 1); |
| Label label0 = new Label(); |
| methodVisitor.visitJumpInsn(IFEQ, label0); |
| methodVisitor.visitVarInsn(ILOAD, 1); |
| methodVisitor.visitInsn(ICONST_1); |
| Label label1 = new Label(); |
| methodVisitor.visitJumpInsn(IF_ICMPNE, label1); |
| methodVisitor.visitVarInsn(ALOAD, 0); |
| methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); |
| methodVisitor.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
| methodVisitor.visitLdcInsn("bar"); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false); |
| methodVisitor.visitInsn(RETURN); |
| methodVisitor.visitLabel(label1); |
| methodVisitor.visitFrame(Opcodes.F_CHOP, 2, null, 0, null); |
| methodVisitor.visitInsn(ACONST_NULL); |
| methodVisitor.visitInsn(ATHROW); |
| methodVisitor.visitLabel(label0); |
| methodVisitor.visitFrame( |
| Opcodes.F_APPEND, 1, new Object[] {Opcodes.UNINITIALIZED_THIS}, 0, null); |
| methodVisitor.visitVarInsn(ALOAD, 0); |
| methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); |
| methodVisitor.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); |
| methodVisitor.visitLdcInsn("foo"); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false); |
| methodVisitor.visitInsn(RETURN); |
| methodVisitor.visitMaxs(2, 2); |
| methodVisitor.visitEnd(); |
| } |
| classWriter.visitEnd(); |
| |
| return classWriter.toByteArray(); |
| } |
| } |
| } |