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Posted to issues@commons.apache.org by "Joshua Ball (JIRA)" <ji...@apache.org> on 2009/12/21 22:27:18 UTC
[jira] Commented: (SANDBOX-319) Cannot pop operand off an empty
stack
[ https://issues.apache.org/jira/browse/SANDBOX-319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12793370#action_12793370 ]
Joshua Ball commented on SANDBOX-319:
-------------------------------------
I just realized that I was using ASM 3.2 instead of ASM 3.1. However, after running with ASM 3.1, I still get an error (though an apparently different one):
org.objectweb.asm.tree.analysis.AnalyzerException: Error at instruction 6: Method owner: expected LExample$1;, but found Ljava/util/concurrent/ScheduledThreadPoolExecutor;
at org.objectweb.asm.tree.analysis.Analyzer.analyze(Unknown Source)
at org.apache.commons.javaflow.bytecode.transformation.asm.ContinuationMethodAnalyzer$2.analyze(ContinuationMethodAnalyzer.java:125)
at org.apache.commons.javaflow.bytecode.transformation.asm.ContinuationMethodAnalyzer.visitEnd(ContinuationMethodAnalyzer.java:136)
at org.objectweb.asm.ClassReader.accept(Unknown Source)
at org.objectweb.asm.ClassReader.accept(Unknown Source)
at org.apache.commons.javaflow.bytecode.transformation.asm.AsmClassTransformer.transform(AsmClassTransformer.java:53)
at org.apache.commons.javaflow.bytecode.transformation.asm.AsmClassTransformer.transform(AsmClassTransformer.java:40)
at org.apache.commons.javaflow.utils.RewritingUtils.rewriteClassFile(RewritingUtils.java:60)
at Rewriter.main(Rewriter.java:10)
Caused by: org.objectweb.asm.tree.analysis.AnalyzerException: Method owner: expected LExample$1;, but found Ljava/util/concurrent/ScheduledThreadPoolExecutor;
at org.objectweb.asm.tree.analysis.BasicVerifier.naryOperation(Unknown Source)
at org.objectweb.asm.tree.analysis.Frame.execute(Unknown Source)
at org.apache.commons.javaflow.bytecode.transformation.asm.MonitoringFrame.execute(MonitoringFrame.java:70)
... 9 more
> Cannot pop operand off an empty stack
> -------------------------------------
>
> Key: SANDBOX-319
> URL: https://issues.apache.org/jira/browse/SANDBOX-319
> Project: Commons Sandbox
> Issue Type: Bug
> Components: Javaflow
> Environment: Java 6
> javaflow svn revision 892381 (http://svn.apache.org/repos/asf/commons/sandbox/javaflow/trunk)
> Debian (mix of testing and unstable)
> Reporter: Joshua Ball
>
> Steps to reproduce:
> Create the file Example.java:
> --------------
> import java.util.concurrent.*;
> public class Example {
> private Executor executor = Executors.newFixedThreadPool(8);
> private ScheduledThreadPoolExecutor stpe = new ScheduledThreadPoolExecutor(1);
> public ScheduledFuture<?> schedule(final Runnable command, long delay, TimeUnit unit) {
> return stpe.schedule(new Runnable() {
> public void run() {
> executor.execute(command);
> }
> }, delay, unit);
> }
> }
> --------------
> and the file Rewriter.java:
> ---------------
> import org.apache.commons.javaflow.utils.RewritingUtils;
> import org.apache.commons.javaflow.bytecode.transformation.ResourceTransformer;
> import org.apache.commons.javaflow.bytecode.transformation.asm.AsmClassTransformer;
> import java.io.File;
> public class Rewriter {
> public static void main(String[] args) throws Exception {
> ResourceTransformer transformer = new AsmClassTransformer();
> RewritingUtils.rewriteClassFile(new File("Example.class"), transformer, new File("ExampleRewritten.class"));
> }
> }
> ----------------
> Compile:
> javac -cp $JAVAFLOW *.java
> Run:
> java -cp $JAVAFLOW Rewriter
> It produces the following error:
> org.objectweb.asm.tree.analysis.AnalyzerException: Error at instruction 6: Method owner: expected LExample$1;, but found Ljava/util/concurrent/ScheduledThreadPoolExecutor;
> at org.objectweb.asm.tree.analysis.Analyzer.analyze(Unknown Source)
> at org.apache.commons.javaflow.bytecode.transformation.asm.ContinuationMethodAnalyzer$2.analyze(ContinuationMethodAnalyzer.java:124)
> at org.apache.commons.javaflow.bytecode.transformation.asm.ContinuationMethodAnalyzer.visitEnd(ContinuationMethodAnalyzer.java:135)
> at org.objectweb.asm.ClassReader.accept(Unknown Source)
> at org.objectweb.asm.ClassReader.accept(Unknown Source)
> at org.apache.commons.javaflow.bytecode.transformation.asm.AsmClassTransformer.transform(AsmClassTransformer.java:53)
> at org.apache.commons.javaflow.bytecode.transformation.asm.AsmClassTransformer.transform(AsmClassTransformer.java:40)
> at org.apache.commons.javaflow.utils.RewritingUtils.rewriteClassFile(RewritingUtils.java:60)
> at Rewriter.main(Rewriter.java:10)
> Caused by: org.objectweb.asm.tree.analysis.AnalyzerException: Method owner: expected LExample$1;, but found Ljava/util/concurrent/ScheduledThreadPoolExecutor;
> at org.objectweb.asm.tree.analysis.BasicVerifier.naryOperation(Unknown Source)
> at org.objectweb.asm.tree.analysis.Frame.execute(Unknown Source)
> at org.apache.commons.javaflow.bytecode.transformation.asm.MonitoringFrame.execute(MonitoringFrame.java:70)
> ... 9 more
> org.objectweb.asm.tree.analysis.AnalyzerException: Error at instruction 9: Cannot pop operand off an empty stack.
> at org.objectweb.asm.tree.analysis.Analyzer.analyze(Unknown Source)
> at org.objectweb.asm.util.CheckMethodAdapter$1.visitEnd(Unknown Source)
> at org.objectweb.asm.util.CheckMethodAdapter.visitEnd(Unknown Source)
> at org.objectweb.asm.tree.MethodNode.accept(Unknown Source)
> at org.apache.commons.javaflow.bytecode.transformation.asm.ContinuationMethodAnalyzer.visitEnd(ContinuationMethodAnalyzer.java:141)
> at org.objectweb.asm.ClassReader.accept(Unknown Source)
> at org.objectweb.asm.ClassReader.accept(Unknown Source)
> at org.apache.commons.javaflow.bytecode.transformation.asm.AsmClassTransformer.transform(AsmClassTransformer.java:53)
> at org.apache.commons.javaflow.bytecode.transformation.asm.AsmClassTransformer.transform(AsmClassTransformer.java:40)
> at org.apache.commons.javaflow.utils.RewritingUtils.rewriteClassFile(RewritingUtils.java:60)
> at Rewriter.main(Rewriter.java:10)
> Caused by: java.lang.IndexOutOfBoundsException: Cannot pop operand off an empty stack.
> at org.objectweb.asm.tree.analysis.Frame.pop(Unknown Source)
> at org.objectweb.asm.tree.analysis.Frame.execute(Unknown Source)
> ... 11 more
> Exception in thread "main" java.lang.RuntimeException: Error at instruction 9: Cannot pop operand off an empty stack. schedule(Ljava/lang/Runnable;JLjava/util/concurrent/TimeUnit;)Ljava/util/concurrent/ScheduledFuture;
> 00000 R R J . R : : L0
> 00001 R R J . R : : LINENUMBER 7 L0
> 00002 R R J . R : : ALOAD 0
> 00003 R R J . R : R : GETFIELD Example.stpe : Ljava/util/concurrent/ScheduledThreadPoolExecutor;
> 00004 R R J . R : R : ALOAD 0
> 00005 R R J . R : R R : ALOAD 1
> 00006 R R J . R : R R R : INVOKESPECIAL Example$1.<init> (LExample;Ljava/lang/Runnable;)V
> 00007 R R J . R : : NEW Example$1
> 00008 R R J . R : R : DUP
> 00009 R R J . R : R R : DUP2_X2
> 00010 ? : POP2
> 00011 ? : LLOAD 2
> 00012 ? : ALOAD 4
> 00013 ? : L1
> 00014 ? : INVOKEVIRTUAL java/util/concurrent/ScheduledThreadPoolExecutor.schedule (Ljava/lang/Runnable;JLjava/util/concurrent/TimeUnit;)Ljava/util/concurrent/ScheduledFuture;
> 00015 ? : ARETURN
> at org.objectweb.asm.util.CheckMethodAdapter$1.visitEnd(Unknown Source)
> at org.objectweb.asm.util.CheckMethodAdapter.visitEnd(Unknown Source)
> at org.objectweb.asm.tree.MethodNode.accept(Unknown Source)
> at org.apache.commons.javaflow.bytecode.transformation.asm.ContinuationMethodAnalyzer.visitEnd(ContinuationMethodAnalyzer.java:141)
> at org.objectweb.asm.ClassReader.accept(Unknown Source)
> at org.objectweb.asm.ClassReader.accept(Unknown Source)
> at org.apache.commons.javaflow.bytecode.transformation.asm.AsmClassTransformer.transform(AsmClassTransformer.java:53)
> at org.apache.commons.javaflow.bytecode.transformation.asm.AsmClassTransformer.transform(AsmClassTransformer.java:40)
> at org.apache.commons.javaflow.utils.RewritingUtils.rewriteClassFile(RewritingUtils.java:60)
> at Rewriter.main(Rewriter.java:10)
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