Program: 9133
Project: 9133
Buggy source:
PerClause.Kind getPerClauseForTypeDeclaration(TypeDeclaration typeDeclaration){
  Annotation[] annotations=typeDeclaration.annotations;
  for (int i=0; i < annotations.length; i++) {
    Annotation annotation=annotations[i];
    if (annotation != null && annotation.resolvedType != null && CharOperation.equals(aspectSig,annotation.resolvedType.signature())) {
      if (annotation.memberValuePairs() == null || annotation.memberValuePairs().length == 0) {
        PerClause.Kind kind=lookupPerClauseKind(typeDeclaration.binding.superclass);
        if (kind == null) {
          return PerClause.SINGLETON;
        }
 else {
          return kind;
        }
      }
 else       if (annotation instanceof SingleMemberAnnotation) {
        SingleMemberAnnotation theAnnotation=(SingleMemberAnnotation)annotation;
        String clause=new String(((StringLiteral)theAnnotation.memberValue).source());
        return determinePerClause(typeDeclaration,clause);
      }
 else       if (annotation instanceof NormalAnnotation) {
        NormalAnnotation theAnnotation=(NormalAnnotation)annotation;
        if (theAnnotation.memberValuePairs == null || theAnnotation.memberValuePairs.length < 1) {
          return PerClause.SINGLETON;
        }
        String clause=new String(((StringLiteral)theAnnotation.memberValuePairs[0].value).source());
        return determinePerClause(typeDeclaration,clause);
      }
 else {
        eclipseWorld().showMessage(IMessage.ABORT,"String_Node_Str",new EclipseSourceLocation(typeDeclaration.compilationResult,typeDeclaration.sourceStart,typeDeclaration.sourceEnd),null);
        return PerClause.SINGLETON;
      }
    }
  }
  return null;
}

Fixed version (ground truth):
PerClause.Kind getPerClauseForTypeDeclaration(TypeDeclaration typeDeclaration){
  Annotation[] annotations=typeDeclaration.annotations;
  if (annotations == null) {
    return null;
  }
  for (int i=0; i < annotations.length; i++) {
    Annotation annotation=annotations[i];
    if (annotation != null && annotation.resolvedType != null && CharOperation.equals(aspectSig,annotation.resolvedType.signature())) {
      if (annotation.memberValuePairs() == null || annotation.memberValuePairs().length == 0) {
        PerClause.Kind kind=lookupPerClauseKind(typeDeclaration.binding.superclass);
        if (kind == null) {
          return PerClause.SINGLETON;
        }
 else {
          return kind;
        }
      }
 else       if (annotation instanceof SingleMemberAnnotation) {
        SingleMemberAnnotation theAnnotation=(SingleMemberAnnotation)annotation;
        String clause=new String(((StringLiteral)theAnnotation.memberValue).source());
        return determinePerClause(typeDeclaration,clause);
      }
 else       if (annotation instanceof NormalAnnotation) {
        NormalAnnotation theAnnotation=(NormalAnnotation)annotation;
        if (theAnnotation.memberValuePairs == null || theAnnotation.memberValuePairs.length < 1) {
          return PerClause.SINGLETON;
        }
        String clause=new String(((StringLiteral)theAnnotation.memberValuePairs[0].value).source());
        return determinePerClause(typeDeclaration,clause);
      }
 else {
        eclipseWorld().showMessage(IMessage.ABORT,"String_Node_Str",new EclipseSourceLocation(typeDeclaration.compilationResult,typeDeclaration.sourceStart,typeDeclaration.sourceEnd),null);
        return PerClause.SINGLETON;
      }
    }
  }
  return null;
}