# devopsgym / codegen__spotbugs__spotbugs-2020 - taskset: [devopsgym](https://harnessreport.com/tasks/devopsgym.md) - difficulty: hard - category: code-generation - language: - runnable from the site: no - agent timeout: 3000s ## Results by harness _none yet_ ## Instruction ``` This is a code generation task. You are expected to write working code that solves the described problem. <issue> ## Code ```java public class IssueXXX { static class ATNSimulator { public int adaptivePredict() { return 0; } } static class ParserATNSimulator extends ATNSimulator { } static class Recognizer<ATNInterpreter extends ATNSimulator> { public ATNInterpreter getInterpreter() { return null; } } static class BaseParser extends Recognizer<ParserATNSimulator> { } public static class Parser extends BaseParser { public void text() { int _alt = 1; do { switch (_alt) { case 1: if (_alt == 1) { continue; } break; default: throw new RuntimeException(); } _alt = getInterpreter().adaptivePredict(); } while (_alt != 2); } }} ``` ## Bytecode ``` // access flags 0x1 public text()V L0 LINENUMBER 29 L0 ICONST_1 ISTORE 1 L1 LINENUMBER 31 L1 FRAME APPEND [I] ILOAD 1 LOOKUPSWITCH 1: L2 default: L3 L2 LINENUMBER 33 L2 FRAME SAME ILOAD 1 ICONST_1 IF_ICMPNE L4 L5 LINENUMBER 34 L5 GOTO L6 L3 LINENUMBER 38 L3 FRAME SAME NEW java/lang/RuntimeException DUP INVOKESPECIAL java/lang/RuntimeException.<init> ()V ATHROW L4 LINENUMBER 40 L4 FRAME SAME ALOAD 0 INVOKEVIRTUAL ghIssues/Issue2017$Parser.getInterpreter ()LghIssues/Issue2017$ATNSimulator; CHECKCAST ghIssues/Issue2017$ParserATNSimulator INVOKEVIRTUAL ghIssues/Issue2017$ParserATNSimulator.adaptivePredict ()I ISTORE 1 L6 LINENUMBER 41 L6 FRAME SAME ILOAD 1 ICONST_2 IF_ICMPNE L1 L7 LINENUMBER 42 L7 RETURN L8 LOCALVARIABLE this LghIssues/Issue2017$Parser; L0 L8 0 LOCALVARIABLE _alt I L1 L8 1 MAXSTACK = 2 MAXLOCALS = 2 ``` ## Exception ``` The following errors occurred during analysis: Can't get stack offset 0 from [] @ 40 in ghIssues.IssueXXXX$Parser.text : ()V java.lang.IllegalArgumentException: 0 is not a value stack offset At edu.umd.cs.findbugs.OpcodeStack.getStackItem(OpcodeStack.java:3156) At edu.umd.cs.findbugs.detect.FindReturnRef.afterOpcode(FindReturnRef.java:300) At edu.umd.cs.findbugs.visitclass.DismantleBytecode.visit(DismantleBytecode.java:880) At edu.umd.cs.findbugs.detect.FindReturnRef.visit(FindReturnRef.java:119) At edu.umd.cs.findbugs.visitclass.BetterVisitor.visitCode(BetterVisitor.java:218) At edu.umd.cs.findbugs.visitclass.PreorderVisitor.visitCode(PreorderVisitor.java:243) At edu.umd.cs.findbugs.bcel.OpcodeStackDetector.visitCode(OpcodeStackDetector.java:65) At org.apache.bcel.classfile.Code.accept(Code.java:131) At edu.umd.cs.findbugs.visitclass.PreorderVisitor.doVisitMethod(PreorderVisitor.java:315) At edu.umd.cs.findbugs.visitclass.PreorderVisitor.visitJavaClass(PreorderVisitor.java:397) At org.apache.bcel.classfile.JavaClass.accept(JavaClass.java:213) At edu.umd.cs.findbugs.BytecodeScanningDetector.visitClassContext(BytecodeScanningDetector.java:38) At edu.umd.cs.findbugs.DetectorToDetector2Adapter.visitClass(DetectorToDetector2Adapter.java:76) At edu.umd.cs.findbugs.FindBugs2.lambda$analyzeApplication$1(FindBugs2.java:1108) At java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) At edu.umd.cs.findbugs.CurrentThreadExecutorService.execute(CurrentThreadExecutorService.java:86) At java.base/java.util.concurrent.AbstractExecutorService.invokeAll(AbstractExecutorService.java:247) At edu.umd.cs.findbugs.FindBugs2.analyzeApplication(FindBugs2.java:1118) At edu.umd.cs.findbugs.FindBugs2.execute(FindBugs2.java:309) At edu.umd.cs.findbugs.test.AnalysisRunner.run(AnalysisRunner.java:115) ``` </issue> Focus on implementing the required functionality correctly and efficiently. Treat this as a programming challenge. You are not allowed to read git history. ``` --- Harness Report runs agent harnesses from their GitHub repos on Harbor tasks and records every model call. Every page is also `.md` and `.json`; index: https://harnessreport.com/llms.txt · MCP: https://harnessreport.com/mcp