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Diffstat (limited to 'asm-analysis/src/test/java/org/objectweb/asm/tree/analysis/AnalyzerWithBasicInterpreterTest.java')
-rw-r--r-- | asm-analysis/src/test/java/org/objectweb/asm/tree/analysis/AnalyzerWithBasicInterpreterTest.java | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/asm-analysis/src/test/java/org/objectweb/asm/tree/analysis/AnalyzerWithBasicInterpreterTest.java b/asm-analysis/src/test/java/org/objectweb/asm/tree/analysis/AnalyzerWithBasicInterpreterTest.java new file mode 100644 index 00000000..fc199934 --- /dev/null +++ b/asm-analysis/src/test/java/org/objectweb/asm/tree/analysis/AnalyzerWithBasicInterpreterTest.java @@ -0,0 +1,256 @@ +// ASM: a very small and fast Java bytecode manipulation framework +// Copyright (c) 2000-2011 INRIA, France Telecom +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions +// are met: +// 1. Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// 2. Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// 3. Neither the name of the copyright holders nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE +// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF +// THE POSSIBILITY OF SUCH DAMAGE. +package org.objectweb.asm.tree.analysis; + +import static java.time.Duration.ofSeconds; +import static org.junit.jupiter.api.Assertions.assertDoesNotThrow; +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertThrows; +import static org.junit.jupiter.api.Assertions.assertTimeoutPreemptively; +import static org.junit.jupiter.api.Assertions.assertTrue; +import static org.junit.jupiter.api.Assumptions.assumeTrue; + +import java.io.IOException; +import java.nio.file.Files; +import java.nio.file.Paths; +import java.util.ArrayList; +import org.junit.jupiter.api.Test; +import org.junit.jupiter.api.function.Executable; +import org.junit.jupiter.params.ParameterizedTest; +import org.junit.jupiter.params.provider.MethodSource; +import org.objectweb.asm.ClassReader; +import org.objectweb.asm.Opcodes; +import org.objectweb.asm.test.AsmTest; +import org.objectweb.asm.test.AsmTest.PrecompiledClass; +import org.objectweb.asm.tree.ClassNode; +import org.objectweb.asm.tree.MethodNode; + +/** + * Unit tests for {@link Analyzer}, when used with a {@link BasicInterpreter}. + * + * @author Eric Bruneton + */ +class AnalyzerWithBasicInterpreterTest extends AsmTest { + + private static final String CLASS_NAME = "C"; + + @Test + void testConstructor() { + assertDoesNotThrow(() -> new BasicInterpreter()); + assertThrows(IllegalStateException.class, () -> new BasicInterpreter() {}); + } + + @Test + void testAnalyze_invalidNewArray() { + MethodNode methodNode = + new MethodNodeBuilder().iconst_0().intInsn(Opcodes.NEWARRAY, -1).vreturn().build(); + + Executable analyze = + () -> new Analyzer<BasicValue>(new BasicInterpreter()).analyze(CLASS_NAME, methodNode); + + String message = assertThrows(AnalyzerException.class, analyze).getMessage(); + assertTrue(message.contains("Invalid array type")); + } + + /** + * Tests that the precompiled classes can be successfully analyzed with a BasicInterpreter, and + * that Analyzer can be subclassed to use custom frames. + * + * @throws AnalyzerException if the test class can't be analyzed. + */ + @ParameterizedTest + @MethodSource(ALL_CLASSES_AND_LATEST_API) + void testAnalyze_basicInterpreter(final PrecompiledClass classParameter, final Api apiParameter) + throws AnalyzerException { + ClassNode classNode = new ClassNode(); + new ClassReader(classParameter.getBytes()).accept(classNode, 0); + Analyzer<BasicValue> analyzer = + new Analyzer<BasicValue>(new BasicInterpreter()) { + @Override + protected Frame<BasicValue> newFrame(final int numLocals, final int numStack) { + return new CustomFrame(numLocals, numStack); + } + + @Override + protected Frame<BasicValue> newFrame(final Frame<? extends BasicValue> src) { + return new CustomFrame(src); + } + }; + + ArrayList<Frame<? extends BasicValue>[]> methodFrames = new ArrayList<>(); + for (MethodNode methodNode : classNode.methods) { + methodFrames.add(analyzer.analyze(classNode.name, methodNode)); + } + + for (Frame<? extends BasicValue>[] frames : methodFrames) { + for (Frame<? extends BasicValue> frame : frames) { + assertTrue(frame == null || frame instanceof CustomFrame); + } + } + } + + /** + * Tests that the precompiled classes can be successfully analyzed with a BasicInterpreter, even + * if the method node's max locals and max stack size are not set. + * + * @throws AnalyzerException if the test class can't be analyzed. + */ + @ParameterizedTest + @MethodSource(ALL_CLASSES_AND_LATEST_API) + void testAnalyzeAndComputeMaxs_basicInterpreter( + final PrecompiledClass classParameter, final Api apiParameter) throws AnalyzerException { + ClassNode classNode = new ClassNode(); + new ClassReader(classParameter.getBytes()).accept(classNode, 0); + ArrayList<MethodMaxs> methodMaxs = new ArrayList<>(); + for (MethodNode methodNode : classNode.methods) { + methodMaxs.add(new MethodMaxs(methodNode.maxStack, methodNode.maxLocals)); + methodNode.maxLocals = 0; + methodNode.maxStack = 0; + } + Analyzer<BasicValue> analyzer = new Analyzer<BasicValue>(new BasicInterpreter()); + + ArrayList<MethodMaxs> analyzedMethodMaxs = new ArrayList<>(); + for (MethodNode methodNode : classNode.methods) { + analyzer.analyzeAndComputeMaxs(classNode.name, methodNode); + analyzedMethodMaxs.add(new MethodMaxs(methodNode.maxStack, methodNode.maxLocals)); + } + + // jdk3.SubOptimalMaxStackAndLocals has non optimal max stack and max local values on purpose. + assumeTrue(classParameter != PrecompiledClass.JDK3_SUB_OPTIMAL_MAX_STACK_AND_LOCALS); + for (int i = 0; i < analyzedMethodMaxs.size(); ++i) { + assertTrue(analyzedMethodMaxs.get(i).maxLocals >= methodMaxs.get(i).maxLocals); + assertTrue(analyzedMethodMaxs.get(i).maxStack >= methodMaxs.get(i).maxStack); + } + } + + /** + * Tests that analyzeAndComputeMaxs computes the smallest possible maxLocals for static methods. + * + * @throws AnalyzerException if the test class can't be analyzed. + */ + @Test + void testAnalyzeAndComputeMaxs_staticMethod() throws AnalyzerException { + MethodNode methodNode = + new MethodNodeBuilder("(I)V", /* maxStack = */ 0, /* maxLocals = */ 0).vreturn().build(); + methodNode.access |= Opcodes.ACC_STATIC; + Analyzer<BasicValue> analyzer = new Analyzer<BasicValue>(new BasicInterpreter()); + + analyzer.analyzeAndComputeMaxs("C", methodNode); + + assertEquals(1, methodNode.maxLocals); + assertEquals(0, methodNode.maxStack); + } + + /** + * Tests that the analyzer does not loop infinitely, even if the {@link Interpreter#merge} method + * does not follow its required contract (namely that if the merge result is equal to the first + * argument, the first argument should be returned - see #316326). + * + * @throws AnalyzerException if the test class can't be analyzed. + */ + @Test + void testAnalyze_badInterpreter() { + ClassNode classNode = new ClassNode(); + new ClassReader(PrecompiledClass.JDK8_ALL_FRAMES.getBytes()).accept(classNode, 0); + Analyzer<BasicValue> analyzer = + new Analyzer<BasicValue>( + new BasicInterpreter(/* latest */ Opcodes.ASM10_EXPERIMENTAL) { + @Override + public BasicValue merge(final BasicValue value1, final BasicValue value2) { + return new BasicValue(super.merge(value1, value2).getType()); + } + }); + + ArrayList<Executable> analyses = new ArrayList<>(); + for (MethodNode methodNode : classNode.methods) { + analyses.add(() -> analyzer.analyze(CLASS_NAME, methodNode)); + } + + for (Executable analysis : analyses) { + assertTimeoutPreemptively(ofSeconds(1), analysis); + } + } + + /** + * Tests that stack map frames are correctly merged when a JSR instruction can be reached from two + * different control flow paths, with different local variable types (#316204). + * + * @throws IOException if the test class can't be loaded. + * @throws AnalyzerException if the test class can't be analyzed. + */ + @Test + void testAnalyze_mergeWithJsrReachableFromTwoDifferentPaths() + throws IOException, AnalyzerException { + ClassReader classReader = + new ClassReader(Files.newInputStream(Paths.get("src/test/resources/Issue316204.class"))); + ClassNode classNode = new ClassNode(); + classReader.accept(classNode, 0); + Analyzer<BasicValue> analyzer = new Analyzer<>(new BasicInterpreter()); + + analyzer.analyze(classNode.name, getMethod(classNode, "basicStopBundles")); + + assertEquals("RIR..... ", analyzer.getFrames()[104].toString()); + } + + private static MethodNode getMethod(final ClassNode classNode, final String name) { + for (MethodNode methodNode : classNode.methods) { + if (methodNode.name.equals(name)) { + return methodNode; + } + } + return null; + } + + private static class CustomFrame extends Frame<BasicValue> { + + CustomFrame(final int numLocals, final int numStack) { + super(numLocals, numStack); + } + + CustomFrame(final Frame<? extends BasicValue> frame) { + super(frame); + } + + @Override + public Frame<BasicValue> init(final Frame<? extends BasicValue> frame) { + assertTrue(frame instanceof CustomFrame); + return super.init(frame); + } + } + + private static class MethodMaxs { + + public final int maxStack; + public final int maxLocals; + + public MethodMaxs(final int maxStack, final int maxLocals) { + this.maxStack = maxStack; + this.maxLocals = maxLocals; + } + } +} |