Hi,
For the demo, I have FOO.pm, Makefile.PL and t/01t.t. Here they are:

C:\temp\temp\FOO>type FOO.pm

package FOO;

$FOO::VERSION = 0.5;

1;

C:\temp\temp\FOO>type Makefile.PL

use ExtUtils::MakeMaker;

WriteMakefile (
     NAME => 'FOO',
     VERSION_FROM => 'FOO.pm',
);

C:\temp\temp\FOO>type t\01t.t

#!perl -T
use FOO;
use Test::More tests => 2;

is(${^TAINT}, 1, 'taint test');
is($FOO::VERSION, 0.5, 'version test');
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When I build that little distro on Win32, perl-5.12.0, all goes well:

C:\temp\temp\FOO>perl makefile.PL
Writing Makefile for FOO

C:\temp\temp\FOO>dmake test
cp FOO.pm blib\lib\FOO.pm
C:\perl512_M\bin\perl.exe "-MExtUtils::Command::MM" "-e" "test_harness
+(0, 'blib\lib', 'blib\arch')" t/*.t
t/01t.t .. ok
All tests successful.
Files=1, Tests=2,  1 wallclock secs ( 0.09 usr +  0.03 sys =  0.12 CPU
+)
Result: PASS
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But if I then try to run 'perl -T -Mblib t/01t.t', I get:

C:\temp\temp\FOO>perl -T -Mblib t/01t.t
Insecure dependency in require while running with -T switch at t/01t.t
+ line 2.
BEGIN failed--compilation aborted at t/01t.t line 2.

C:\temp\temp\FOO>
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What do I need to do in order that 'perl -T -Mblib t/01t.t' works as expected ?
Preferably, there will be some simple modification I can make to t/01t.t ... but if that's unrealistic, then I might be open to other approaches. However, if the "other approaches" are too cumbersome, then I probably just won't worry about it at all :-)

Cheers,
Rob