FCGI throws warning

Question

I was trying to implement FASTCGI, from following tutorial. Whenever I execute the code, I get following warning:

Subroutine FCGI::DESTROY redefined at xyz.fcgi line 30.

The statement, that is responsible for throwing the warning:

*FCGI::DESTROY = sub {};

Any idea, why it throw warning?

I do not want to suppress the warning.

Answer 1

Below are the cases which cause Subroutine xyz redefined error

1: You declared the same subroutine somewhere

2: You have a dependency loop

If it's not from above two cases then restarting the server and adding 1; at the end of your module may solve the issue.

Also see: best way to handle Subroutine redefined warning