Perl::Critic::Policy::InputOutput::RequireCheckedOpen(3)
NAME
Perl::Critic::Policy::InputOutput::RequireCheckedOpen - Write "my
$error = open $fh, $mode, $filename;" instead of "open $fh, $mode,
$filename;".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
The perl builtin I/O function "open" returns a false value on failure.
That value should always be checked to ensure that the open was
successful.
my $error = open( $filehandle, $mode, $filename ); # ok
open( $filehandle, $mode, $filename ) or die "unable to open: $!"; # ok
open( $filehandle, $mode, $filename ); # not ok
use autodie;
open $filehandle, $mode, $filename; # ok
You can use autodie, Fatal, or Fatal::Exception to get around this.
Currently, autodie is not properly treated as a pragma; its lexical
effects aren't taken into account.
CONFIGURATION
If you create a module that exports "autodie" you can tell this policy
about it with the "autodie_modules" setting:
[InputOutput::RequireCheckedSyscalls]
autodie_modules = My::Thing
AUTHOR
Andrew Moore <amoore@mooresystems.com>
ACKNOWLEDGMENTS
This policy module is based heavily on policies written by Jeffrey Ryan
Thalhammer <jeff@imaginative-software.com>.
COPYRIGHT
Copyright (c) 2007-2011 Andrew Moore. All rights reserved.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself. The full text of this license can
be found in the LICENSE file included with this module.
perl v5.28.2 Perl::Critic::Policy::InputOutput::RequireCheckedOpen(3)
perl-critic 1.134.0 - Generated Mon Jun 3 13:05:40 CDT 2019