+#!perl
+
+use strict;
+use warnings;
+
+use Config qw/%Config/;
+
+BEGIN {
+ if (!$Config{useithreads}) {
+ require Test::More;
+ Test::More->import;
+ plan(skip_all => 'This perl wasn\'t built to support threads');
+ }
+}
+
+use threads;
+
+use Test::More;
+
+BEGIN {
+ require Lexical::Types;
+ if (Lexical::Types::LT_THREADSAFE()) {
+ plan tests => 1;
+ defined and diag "Using threads $_" for $threads::VERSION;
+ } else {
+ plan skip_all => 'This Lexical::Types isn\'t thread safe';
+ }
+}
+
+sub run_perl {
+ my $code = shift;
+
+ local %ENV;
+ system { $^X } $^X, '-T', map("-I$_", @INC), '-e', $code;
+}
+
+SKIP:
+{
+ skip 'Fails on 5.8.2 and lower' => 1 if $] <= 5.008002;
+
+ my $status = run_perl <<' RUN';
+ { package IntX; package IntY; package IntZ; }
+ my ($code, @expected);
+ sub cb {
+ my $e = shift(@expected) || q{DUMMY};
+ --$code if $_[0] eq $e;
+ ()
+ }
+ use threads;
+ $code = threads->create(sub {
+ $code = @expected = qw/IntX/;
+ eval q{use Lexical::Types as => \&cb; my IntX $x;}; die if $@;
+ return $code;
+ })->join;
+ $code += @expected = qw/IntZ/;
+ eval q{my IntY $y;}; die if $@;
+ eval q{use Lexical::Types as => \&cb; my IntZ $z;}; die if $@;
+ $code += 256 if $code < 0;
+ exit $code;
+ RUN
+ is $status, 0, 'loading the pragma in a thread and using it outside doesn\'t segfault';
+}