new file mode 100755
--- /dev/null
+++ b/t/64bit.t
@@ -0,0 +1,44 @@
+#!/usr/bin/perl
+
+use strict;
+use Test::More;
+use FindBin qw($Bin);
+use lib "$Bin/lib";
+use MemcachedTest;
+
+$ENV{T_MEMD_INITIAL_MALLOC} = "4294967328"; # 2**32 + 32 , just over 4GB
+$ENV{T_MEMD_SLABS_ALLOC}    = 0;  # don't preallocate slabs
+
+my $server = new_memcached("-m 4098 -M");
+my $sock = $server->sock;
+
+my ($stats, $slabs) = @_;
+
+$stats = mem_stats($sock);
+
+if ($stats->{'pointer_size'} eq "32") {
+    plan skip_all => 'Skipping 64-bit tests on 32-bit build';
+    exit 0;
+} else {
+    plan tests => 6;
+}
+
+is($stats->{'pointer_size'}, 64, "is 64 bit");
+is($stats->{'limit_maxbytes'}, "4297064448", "max bytes is 4098 MB");
+
+$slabs = mem_stats($sock, 'slabs');
+is($slabs->{'total_malloced'}, "4294967328", "expected (faked) value of total_malloced");
+is($slabs->{'active_slabs'}, 0, "no active slabs");
+
+my $hit_limit = 0;
+for (1..5) {
+    my $size = 400 * 1024;
+    my $data = "a" x $size;
+    print $sock "set big$_ 0 0 $size\r\n$data\r\n";
+    my $res = <$sock>;
+    $hit_limit = 1 if $res ne "STORED\r\n";
+}
+ok($hit_limit, "hit size limit");
+
+$slabs = mem_stats($sock, 'slabs');
+is($slabs->{'active_slabs'}, 1, "1 active slab");