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.IX Title "Perl::Critic::Policy::InputOutput::RequireCheckedClose 3pm"
.TH Perl::Critic::Policy::InputOutput::RequireCheckedClose 3pm 2023-07-26 "perl v5.38.0" "User Contributed Perl Documentation"
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.SH NAME
Perl::Critic::Policy::InputOutput::RequireCheckedClose \- Write "my $error = close $fh;" instead of "close $fh;".
.SH AFFILIATION
.IX Header "AFFILIATION"
This Policy is part of the core Perl::Critic
distribution.
.SH DESCRIPTION
.IX Header "DESCRIPTION"
The perl builtin I/O function \f(CW\*(C`close\*(C'\fR returns a false value on
failure. That value should be checked to ensure that the close was
successful.
.PP
.Vb 3
\&    my $error = close $filehandle;                   # ok
\&    close $filehandle or die "unable to close: $!";  # ok
\&    close $filehandle;                               # not ok
\&
\&    use autodie qw< :io >;
\&    close $filehandle;                               # ok
.Ve
.PP
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.
.SH CONFIGURATION
.IX Header "CONFIGURATION"
If you create a module that exports \f(CW\*(C`autodie\*(C'\fR you can tell this policy about
it with the \f(CW\*(C`autodie_modules\*(C'\fR setting:
.PP
.Vb 2
\&    [InputOutput::RequireCheckedSyscalls]
\&    autodie_modules = My::Thing
.Ve
.SH AUTHOR
.IX Header "AUTHOR"
Andrew Moore <amoore@mooresystems.com>
.SH ACKNOWLEDGMENTS
.IX Header "ACKNOWLEDGMENTS"
This policy module is based heavily on policies written by Jeffrey
Ryan Thalhammer <jeff@imaginative\-software.com>.
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright (c) 2007\-2011 Andrew Moore.  All rights reserved.
.PP
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.