diff options
Diffstat (limited to 'org.jacoco.core.test.validation.java8/src/org/jacoco/core/test/validation/java8/BootstrapMethodReferenceTest.java')
-rw-r--r-- | org.jacoco.core.test.validation.java8/src/org/jacoco/core/test/validation/java8/BootstrapMethodReferenceTest.java | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/org.jacoco.core.test.validation.java8/src/org/jacoco/core/test/validation/java8/BootstrapMethodReferenceTest.java b/org.jacoco.core.test.validation.java8/src/org/jacoco/core/test/validation/java8/BootstrapMethodReferenceTest.java new file mode 100644 index 00000000..69348001 --- /dev/null +++ b/org.jacoco.core.test.validation.java8/src/org/jacoco/core/test/validation/java8/BootstrapMethodReferenceTest.java @@ -0,0 +1,128 @@ +/******************************************************************************* + * Copyright (c) 2009, 2018 Mountainminds GmbH & Co. KG and Contributors + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * Evgeny Mandrikov - initial API and implementation + * + *******************************************************************************/ +package org.jacoco.core.test.validation.java8; + +import static org.junit.Assert.assertEquals; + +import java.lang.invoke.CallSite; +import java.lang.invoke.ConstantCallSite; +import java.lang.invoke.MethodHandles; +import java.lang.invoke.MethodType; +import java.lang.reflect.InvocationTargetException; + +import org.jacoco.core.instr.Instrumenter; +import org.jacoco.core.runtime.IRuntime; +import org.jacoco.core.runtime.RuntimeData; +import org.jacoco.core.runtime.SystemPropertiesRuntime; +import org.jacoco.core.test.TargetLoader; +import org.junit.After; +import org.junit.Before; +import org.junit.Test; +import org.objectweb.asm.ClassWriter; +import org.objectweb.asm.Handle; +import org.objectweb.asm.Label; +import org.objectweb.asm.MethodVisitor; +import org.objectweb.asm.Opcodes; + +/** + * Test of ASM bug + * <a href="https://gitlab.ow2.org/asm/asm/issues/317748">#317748</a> that + * caused + * {@code java.lang.ClassFormatError: Short length on BootstrapMethods in class file} + * during instrumentation. + */ +public class BootstrapMethodReferenceTest { + + private IRuntime runtime; + private Instrumenter instrumenter; + + @Before + public void setup() throws Exception { + runtime = new SystemPropertiesRuntime(); + instrumenter = new Instrumenter(runtime); + runtime.startup(new RuntimeData()); + } + + @After + public void teardown() { + runtime.shutdown(); + } + + @Test + public void test() throws Exception { + final String className = "Example"; + + final ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES); + cw.visit(Opcodes.V1_7, Opcodes.ACC_PUBLIC, className, null, + "java/lang/Object", null); + + final MethodVisitor mv = cw.visitMethod( + Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC, "run", "()I", null, + null); + mv.visitCode(); + addCauseOfResizeInstructions(mv); + final MethodType methodType = MethodType.methodType(CallSite.class, + MethodHandles.Lookup.class, String.class, MethodType.class); + final Handle handle = new Handle(Opcodes.H_INVOKESTATIC, + this.getClass().getCanonicalName().replace('.', '/'), + "bootstrap", methodType.toMethodDescriptorString(), false); + mv.visitInvokeDynamicInsn("invoke", "()I", handle); + mv.visitInsn(Opcodes.IRETURN); + mv.visitMaxs(1, 0); + mv.visitEnd(); + + cw.visitEnd(); + + final byte[] original = cw.toByteArray(); + assertEquals(42, run(className, original)); + + final byte[] instrumented = instrumenter.instrument(original, + className); + assertEquals(42, run(className, instrumented)); + } + + private static int run(final String className, final byte[] bytes) + throws ClassNotFoundException, NoSuchMethodException, + InvocationTargetException, IllegalAccessException { + final Integer result = (Integer) new TargetLoader() + .add(className, bytes).getMethod("run").invoke(null); + return result.intValue(); + } + + /** + * Adds code that triggers usage of + * {@link org.objectweb.asm.MethodWriter#COMPUTE_INSERTED_FRAMES} during + * instrumentation. + */ + private static void addCauseOfResizeInstructions(final MethodVisitor mv) { + mv.visitInsn(Opcodes.ICONST_0); + mv.visitInsn(Opcodes.ICONST_1); + final Label target = new Label(); + mv.visitJumpInsn(Opcodes.IFLE, target); + for (int i = 0; i < Short.MAX_VALUE; i++) { + mv.visitInsn(Opcodes.NOP); + } + mv.visitLabel(target); + } + + public static CallSite bootstrap(final MethodHandles.Lookup caller, + final String name, final MethodType type) throws Exception { + return new ConstantCallSite( + caller.findStatic(BootstrapMethodReferenceTest.class, + "callTarget", MethodType.methodType(int.class))); + } + + public static int callTarget() { + return 42; + } + +} |