---
layout: docs
title: Facebook\HackCodegen\CodegenFileBadSignatureException
id: class.Facebook.HackCodegen.CodegenFileBadSignatureException
docid: class.Facebook.HackCodegen.CodegenFileBadSignatureException
permalink: /docs/reference/class.Facebook.HackCodegen.CodegenFileBadSignatureException/
---
# Facebook\\HackCodegen\\CodegenFileBadSignatureException




## Interface Synopsis




``` Hack
namespace Facebook\HackCodegen;

final class CodegenFileBadSignatureException extends CodegenFileSignatureException {...}
```




### Public Methods




+ [` ->__construct(string $file_name) `](<class.Facebook.HackCodegen.CodegenFileBadSignatureException.__construct.md>)