Program: 75665
Project: 75665
Buggy source:
/** 
 * Generate C code for a class, including code (function declarations) for all of its methods, and for its initialization function.
 * @param source The class.
 * @return The code.
 */
public String generate(SootClass source){
  StringBuffer bodyCode=new StringBuffer();
  StringBuffer headerCode=new StringBuffer();
  _context.clear();
  source.setApplicationClass();
  _updateRequiredTypes(source.getType());
  _context.addIncludeFile("String_Node_Str");
  _context.addIncludeFile("String_Node_Str");
  _context.addIncludeFile("String_Node_Str");
  if (!_context.getSingleClassMode()) {
    _context.addIncludeFile("String_Node_Str");
  }
  int count=0;
  Iterator methods=source.getMethods().iterator();
  while (methods.hasNext()) {
    SootMethod method=(SootMethod)(methods.next());
    if (method.isPrivate()) {
      if (count++ == 0) {
        bodyCode.append(_comment("String_Node_Str" + "String_Node_Str"));
      }
      if (method.isNative()) {
        bodyCode.append("String_Node_Str");
      }
      bodyCode.append(_generateMethodHeader(method) + "String_Node_Str");
    }
  }
  bodyCode.append("String_Node_Str");
  methods=source.getMethods().iterator();
  while (methods.hasNext()) {
    SootMethod thisMethod=(SootMethod)methods.next();
    String methodCode=_generateMethod(thisMethod);
    ;
    if (RequiredFileGenerator.isRequiredMethod(thisMethod)) {
      bodyCode.append(methodCode);
    }
    if (methodCode.length() != 0) {
      bodyCode.append("String_Node_Str");
    }
  }
  bodyCode.append(_comment("String_Node_Str"));
  bodyCode.append("String_Node_Str" + CNames.classNameOf(source) + "String_Node_Str"+ CNames.classStructureNameOf(source)+ "String_Node_Str");
  bodyCode.append(_generateClassInitialization(source));
  headerCode.append(_generateIncludeDirectives() + "String_Node_Str");
  headerCode.append(_declareConstants() + "String_Node_Str");
  headerCode.append(_generateArrayInstanceDeclarations());
  return (headerCode.append(bodyCode)).toString();
}

Fixed version (ground truth):
/** 
 * Generate C code for a class, including code (function declarations) for all of its methods, and for its initialization function.
 * @param source The class.
 * @return The code.
 */
public String generate(SootClass source){
  StringBuffer bodyCode=new StringBuffer();
  StringBuffer headerCode=new StringBuffer();
  _context.clear();
  headerCode.append("String_Node_Str" + "String_Node_Str");
  source.setApplicationClass();
  _updateRequiredTypes(source.getType());
  _context.addIncludeFile("String_Node_Str");
  _context.addIncludeFile("String_Node_Str");
  _context.addIncludeFile("String_Node_Str");
  if (!_context.getSingleClassMode()) {
    _context.addIncludeFile("String_Node_Str");
  }
  int count=0;
  Iterator methods=source.getMethods().iterator();
  while (methods.hasNext()) {
    SootMethod method=(SootMethod)(methods.next());
    if (method.isPrivate()) {
      if (count++ == 0) {
        bodyCode.append(_comment("String_Node_Str" + "String_Node_Str"));
      }
      if (method.isNative()) {
        bodyCode.append("String_Node_Str");
      }
      bodyCode.append(_generateMethodHeader(method) + "String_Node_Str");
    }
  }
  bodyCode.append("String_Node_Str");
  methods=source.getMethods().iterator();
  while (methods.hasNext()) {
    SootMethod thisMethod=(SootMethod)methods.next();
    String methodCode=_generateMethod(thisMethod);
    ;
    if (RequiredFileGenerator.isRequiredMethod(thisMethod)) {
      bodyCode.append(methodCode);
    }
    if (methodCode.length() != 0) {
      bodyCode.append("String_Node_Str");
    }
  }
  bodyCode.append(_comment("String_Node_Str"));
  bodyCode.append("String_Node_Str" + CNames.classNameOf(source) + "String_Node_Str"+ CNames.classStructureNameOf(source)+ "String_Node_Str");
  bodyCode.append(_generateClassInitialization(source));
  headerCode.append(_generateIncludeDirectives() + "String_Node_Str");
  headerCode.append(_declareConstants() + "String_Node_Str");
  headerCode.append(_generateArrayInstanceDeclarations());
  return (headerCode.append(bodyCode)).toString();
}