I have had a very helpful reply from Christopher J. Madsen via RT bug-Win32-IPC@rt.cpan.org who suggested that in my case I can remove the problem by using
use Win32::ChangeNotify qw(FILE_NOTIFY_CHANGE_SIZE);
As this will just export _NOTIFY_CHANGE_SIZE from the module. Therefore there will not be any conflict with INFINITE. This worked so I no longer have a problem!
Thanks for your help in pointing me in the right direction

In reply to Re^3: Prototype mismatch error - ChangeNotify by merrymonk
in thread Prototype mismatch error - ChangeNotify by merrymonk

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