-#!./perl
+#!perl
+
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require './test.pl';
$| = 1;
-}
-use strict;
-use Config;
-
-BEGIN {
- if (!$Config{useithreads}) {
- print "1..0 # Skip: no ithreads\n";
- exit 0;
+ require Config;
+ if (!$Config::Config{useithreads}) {
+ print "1..0 # Skip: no ithreads\n";
+ exit 0;
}
if ($ENV{PERL_CORE_MINITEST}) {
print "1..0 # Skip: no dynamic loading on miniperl, no threads\n";
exit 0;
}
- plan(11);
+
+ plan(10);
}
+
+use strict;
+use warnings;
use threads;
# test that we don't get:
no strict 'vars'; # Accessing $TODO from test.pl
local $TODO = 'refcount issues with threads';
-# Attempt to free unreferenced scalar...
-fresh_perl_is(<<'EOI', 'ok', { }, 'thread sub via scalar');
- use threads;
- my $test = sub {};
- threads->create($test)->join();
- print 'ok';
-EOI
-
-# Attempt to free unreferenced scalar...
-fresh_perl_is(<<'EOI', 'ok', { }, 'thread sub via $_[0]');
- use threads;
- sub thr { threads->new($_[0]); }
- thr(sub { })->join;
- print 'ok';
-EOI
-
# Scalars leaked: 1
foreach my $BLOCK (qw(CHECK INIT)) {
fresh_perl_is(<<EOI, 'ok', { }, "threads in $BLOCK block");
} # TODO
+# [perl #45053] Memory corruption with heavy module loading in threads
+#
+# run-time usage of newCONSTSUB (as done by the IO boot code) wasn't
+# thread-safe - got occasional coredumps or malloc corruption
+{
+ local $SIG{__WARN__} = sub {}; # Ignore any thread creation failure warnings
+ my @t;
+ for (1..100) {
+ my $thr = threads->create( sub { require IO });
+ last if !defined($thr); # Probably ran out of memory
+ push(@t, $thr);
+ }
+ $_->join for @t;
+ ok(1, '[perl #45053]');
+}
+
# EOF