It's actually rather simple. 
sub IO::Handle::DESTROY {
  my $deadbody = shift;
  not defined fileno $deadbody
    or close $deadbody
    or die "Cannot close $deadbody: $!";
}

[download]
Of course, this is a global change, but that's life. You can make it regional by putting it inside a local setting: 
{
  local *IO::Handle::DESTROY = sub { ... };
  {
    open my $fh, "...";
    ...
  } # will trigger here
}

[download]
The nested parens here ensure that the handle is destroyed before the local sub assignment goes out of scope.

-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.

In reply to •Re: Catching errors in closing lexical filehandles by merlyn
in thread Catching errors in closing lexical filehandles by gaal

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