Program: 155861
Project: 155861
Buggy source:
public boolean emitFields() throws IOException {
  for (  FieldInfo field : fields) {
    String originalType=field.fieldElement.asType().toString();
    String fullType=convertSimpleTypesToObject(originalType);
    String shortType=fullType.substring(fullType.lastIndexOf("String_Node_Str") + 1);
    String returnCast="String_Node_Str";
    String camelCaseFieldName=Character.toUpperCase(field.fieldName.charAt(0)) + field.fieldName.substring(1);
    if (originalType.compareTo("String_Node_Str") == 0) {
      fullType="String_Node_Str";
      shortType="String_Node_Str";
      returnCast="String_Node_Str" + originalType + "String_Node_Str";
    }
    if (shortType.compareTo("String_Node_Str") == 0) {
      fullType="String_Node_Str";
      shortType="String_Node_Str";
      returnCast="String_Node_Str";
    }
    String getterStmt="String_Node_Str" + returnCast + "String_Node_Str"+ shortType+ "String_Node_Str"+ field.fieldId+ "String_Node_Str";
    String setterStmt="String_Node_Str" + shortType + "String_Node_Str"+ field.fieldId+ "String_Node_Str";
    writer.emitField("String_Node_Str",field.fieldId,EnumSet.of(Modifier.PRIVATE,Modifier.STATIC));
    writer.emitAnnotation("String_Node_Str").beginMethod(originalType,"String_Node_Str" + camelCaseFieldName,EnumSet.of(Modifier.PUBLIC)).emitStatement(getterStmt).endMethod();
    writer.emitAnnotation("String_Node_Str").beginMethod("String_Node_Str","String_Node_Str" + camelCaseFieldName,EnumSet.of(Modifier.PUBLIC),originalType,"String_Node_Str").emitStatement(setterStmt).endMethod().emitEmptyLine();
  }
  return true;
}

Fixed version (ground truth):
public boolean emitFields() throws IOException {
  int columnIndex=0;
  for (  FieldInfo field : fields) {
    String originalType=field.fieldElement.asType().toString();
    String fullType=convertSimpleTypesToObject(originalType);
    String shortType=fullType.substring(fullType.lastIndexOf("String_Node_Str") + 1);
    String returnCast="String_Node_Str";
    String camelCaseFieldName=Character.toUpperCase(field.fieldName.charAt(0)) + field.fieldName.substring(1);
    if (originalType.compareTo("String_Node_Str") == 0) {
      fullType="String_Node_Str";
      shortType="String_Node_Str";
      returnCast="String_Node_Str" + originalType + "String_Node_Str";
    }
    if (shortType.compareTo("String_Node_Str") == 0) {
      fullType="String_Node_Str";
      shortType="String_Node_Str";
      returnCast="String_Node_Str";
    }
    String getterStmt="String_Node_Str" + returnCast + "String_Node_Str"+ shortType+ "String_Node_Str"+ field.fieldId+ "String_Node_Str";
    String setterStmt="String_Node_Str" + shortType + "String_Node_Str"+ field.fieldId+ "String_Node_Str";
    writer.emitField("String_Node_Str",field.fieldId,EnumSet.of(Modifier.PRIVATE,Modifier.STATIC),Integer.toString(columnIndex));
    columnIndex++;
    writer.emitAnnotation("String_Node_Str").beginMethod(originalType,"String_Node_Str" + camelCaseFieldName,EnumSet.of(Modifier.PUBLIC)).emitStatement(getterStmt).endMethod();
    writer.emitAnnotation("String_Node_Str").beginMethod("String_Node_Str","String_Node_Str" + camelCaseFieldName,EnumSet.of(Modifier.PUBLIC),originalType,"String_Node_Str").emitStatement(setterStmt).endMethod().emitEmptyLine();
  }
  return true;
}