BEGIN {
my $force = $ENV{PERL_LEXICAL_TYPES_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'
BEGIN {
my $force = $ENV{PERL_LEXICAL_TYPES_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'