Please advise how I can call a subroutine in a die statement. I have a mail subroutine that I want to call if a file doesnt open and I want to get the error message to print out in my STDERR.
This is not working but this is what Iam trying to do:

sub mysub
{
  mail stuff here..
}
open(TMPFILE,"<datafile.txt") || die "Cant open: $!" mysub();
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