Program: 54518
Project: 54518
Buggy source:
/** 
 * Returns this locale in canonical form: <ul> <li>Deprecated language/region tags are replaced with official versions <li> </ul>
 * @return GwtLocale instance 
 */
public GwtLocale getCanonicalForm(){
  String canonLanguage=language;
  String canonScript=script;
  String canonRegion=region;
  String canonVariant=variant;
  int n=deprecatedLanguages.length;
  for (int i=0; i < n; i+=2) {
    if (deprecatedLanguages[i + 1].equals(canonLanguage)) {
      canonLanguage=deprecatedLanguages[i];
      break;
    }
  }
  n=deprecatedRegions.length;
  for (int i=0; i < n; i+=2) {
    if (deprecatedRegions[i + 1].equals(canonRegion)) {
      canonRegion=deprecatedRegions[i];
      break;
    }
  }
  if ("String_Node_Str".equals(canonLanguage)) {
    if (canonRegion != null) {
      if ("String_Node_Str".equals(canonRegion) && "String_Node_Str".equals(canonScript)) {
        canonScript=null;
      }
 else       if ("String_Node_Str".equals(canonRegion) && "String_Node_Str".equals(canonScript)) {
        canonScript=null;
      }
    }
 else     if ("String_Node_Str".equals(canonScript)) {
      canonRegion="String_Node_Str";
      canonScript=null;
    }
 else     if ("String_Node_Str".equals(canonScript)) {
      canonRegion="String_Node_Str";
      canonScript=null;
    }
  }
  if ("String_Node_Str".equals(canonLanguage)) {
    canonLanguage="String_Node_Str";
    canonVariant=null;
  }
 else   if ("String_Node_Str".equals(canonLanguage)) {
    canonLanguage="String_Node_Str";
    canonVariant=null;
  }
 else   if ("String_Node_Str".equals(canonLanguage)) {
    if (canonVariant == null || "String_Node_Str".equals(canonVariant)) {
      canonLanguage="String_Node_Str";
      canonVariant=null;
    }
 else     if ("String_Node_Str".equals(canonVariant)) {
      canonLanguage="String_Node_Str";
      canonVariant=null;
    }
  }
  if (canonScript != null && canonScript.equals(DefaultLanguageScripts.getDefaultScript(canonLanguage))) {
    canonScript=null;
  }
  return factory.fromComponents(canonLanguage,canonScript,canonRegion,canonVariant);
}

Fixed version (ground truth):
/** 
 * Returns this locale in canonical form.  Changes for canonical form are: <ul> <li>Deprecated language/region tags are replaced with official versions </ul>
 * @return GwtLocale instance 
 */
public GwtLocale getCanonicalForm(){
  String canonLanguage=language;
  String canonScript=script;
  String canonRegion=region;
  String canonVariant=variant;
  int n=deprecatedLanguages.length;
  for (int i=0; i < n; i+=2) {
    if (deprecatedLanguages[i + 1].equals(canonLanguage)) {
      canonLanguage=deprecatedLanguages[i];
      break;
    }
  }
  n=deprecatedRegions.length;
  for (int i=0; i < n; i+=2) {
    if (deprecatedRegions[i + 1].equals(canonRegion)) {
      canonRegion=deprecatedRegions[i];
      break;
    }
  }
  if ("String_Node_Str".equals(canonLanguage)) {
    if (canonRegion != null) {
      if ("String_Node_Str".equals(canonRegion) && "String_Node_Str".equals(canonScript)) {
        canonScript=null;
      }
 else       if ("String_Node_Str".equals(canonRegion) && "String_Node_Str".equals(canonScript)) {
        canonScript=null;
      }
    }
 else     if ("String_Node_Str".equals(canonScript)) {
      canonRegion="String_Node_Str";
      canonScript=null;
    }
 else     if ("String_Node_Str".equals(canonScript)) {
      canonRegion="String_Node_Str";
      canonScript=null;
    }
  }
  if ("String_Node_Str".equals(canonLanguage)) {
    canonLanguage="String_Node_Str";
    canonVariant=null;
  }
 else   if ("String_Node_Str".equals(canonLanguage)) {
    canonLanguage="String_Node_Str";
    canonVariant=null;
  }
 else   if ("String_Node_Str".equals(canonLanguage)) {
    if (canonVariant == null || "String_Node_Str".equals(canonVariant)) {
      canonLanguage="String_Node_Str";
      canonVariant=null;
    }
 else     if ("String_Node_Str".equals(canonVariant)) {
      canonLanguage="String_Node_Str";
      canonVariant=null;
    }
  }
  if (canonScript != null && canonScript.equals(DefaultLanguageScripts.getDefaultScript(canonLanguage))) {
    canonScript=null;
  }
  return factory.fromComponents(canonLanguage,canonScript,canonRegion,canonVariant);
}