You are absolutely correct. The error “Can't locate Module.pm in @INC” exists, but AFAIK no such error message referring to functions does. So there are two and a half possibilities:
- It is a trick question to test your knowledge of Perl. Explain how a similar error regarding modules does exist, and what the role of @INC is.
- The question contains a mistake. This is the most likely explanation, considering that perldiag has no entry for such an error message.
- There is some surprising new behavior in Perl which neither you nor I am not aware of. While possible, this isn't exactly the most likely explanation.