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#!perl
use strict;
use warnings;
sub skipall {
my ($msg) = @_;
require Test::More;
Test::More::plan(skip_all => $msg);
}
use Config qw<%Config>;
BEGIN {
my $force = $ENV{PERL_AUTOVIVIFICATION_TEST_THREADS} ? 1 : !1;
skipall 'This perl wasn\'t built to support threads'
unless $Config{useithreads};
skipall 'perl 5.13.4 required to test thread safety'
unless $force or "$]" >= 5.013004;
}
use threads;
use Test::More;
BEGIN {
require autovivification;
skipall 'This autovivification isn\'t thread safe'
unless autovivification::A_THREADSAFE();
plan tests => 1;
defined and diag "Using threads $_" for $threads::VERSION;
}
sub run_perl {
my $code = shift;
my $SystemRoot = $ENV{SystemRoot};
local %ENV;
$ENV{SystemRoot} = $SystemRoot if $^O eq 'MSWin32' and defined $SystemRoot;
system { $^X } $^X, '-T', map("-I$_", @INC), '-e', $code;
}
SKIP:
{
skip 'Fails on 5.8.2 and lower' => 1 if "$]" <= 5.008002;
my $status = run_perl <<' RUN';
my $code = 1 + 2 + 4;
use threads;
$code -= threads->create(sub {
eval q{no autovivification; my $x; my $y = $x->{foo}; $x};
return defined($x) ? 0 : 1;
})->join;
$code -= defined(eval q{my $x; my $y = $x->{foo}; $x}) ? 2 : 0;
$code -= defined(eval q{no autovivification; my $x; my $y = $x->{foo}; $x})
? 0 : 4;
exit $code;
RUN
is $status, 0, 'loading the pragma in a thread and using it outside doesn\'t segfault';
}
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