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t/test.pl: Make /dev/null available for portability #23683

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Merged
khwilliamson merged 1 commit into from
Sep 8, 2025
Merged

t/test.pl: Make /dev/null available for portability #23683

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13 changes: 9 additions & 4 deletions t/test.pl
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Original file line number Diff line number Diff line change
@@ -1,7 +1,6 @@
#
# t/test.pl - most of Test::More functionality without the fuss


# NOTE:
#
# Do not rely on features found only in more modern Perls here, as some CPAN
Expand All @@ -19,6 +18,10 @@
# In this file, we use the latter "Baby Perl" approach, and increment
# will be worked over by t/op/inc.t

# This file sets for its caller $::IS_ASCII and $::IS_EBCDIC appropriately;
# and $::devnull to be the string to use to specify /dev/null on this
# platform.

$| = 1;
our $Level = 1;
my $test = 1;
Expand Down Expand Up @@ -697,6 +700,9 @@ ($)
my $is_vms = $^O eq 'VMS';
my $is_cygwin = $^O eq 'cygwin';

# /dev/null appears to be surprisingly portable.
$::devnull = ($is_mswin ? 'nul' : '/dev/null');

sub _quote_args {
my ($runperl, $args) = @_;

Expand Down Expand Up @@ -798,14 +804,13 @@ sub _create_runperl { # Create the string to qx in runperl().
# needing a pipeline, so that the fork tests have a sane environment
# without these surprises.

# /dev/null appears to be surprisingly portable.
$runperl = $runperl . ($is_mswin ? ' <nul' : ' </dev/null');
$runperl = "$runperl <$::devnull";
}
if (defined $args{args}) {
$runperl = _quote_args($runperl, $args{args});
}
if (exists $args{stderr} && $args{stderr} eq 'devnull') {
$runperl = $runperl . ($is_mswin ? ' 2>nul' : ' 2>/dev/null');
$runperl = "$runperl 2>$::devnull";
}
elsif ($args{stderr}) {
$runperl = $runperl . ' 2>&1';
Expand Down
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