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/ Test2::Compare::Negatable
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CVE-2025-40909 (2025-05-30)

Perl threads have a working directory race condition where file operations may target unintended paths. If a directory handle is open at thread creation, the process-wide current working directory is temporarily changed in order to clone that handle for the new thread, which is visible from any third (or more) thread already running. This may lead to unintended operations such as loading code or accessing files from unexpected locations, which a local attacker may be able to exploit. The bug was introduced in commit 11a11ecf4bea72b17d250cfb43c897be1341861e and released in Perl version 5.13.6

NAME

Test2::Compare::Negatable - Poor mans 'role' for compare objects that can be negated.

DESCRIPTION

Using this package inside an Test2::Compare::Base subclass will overload !$obj and import clone_negate() and toggle_negate().

WHY?

Until perl 5.18 the 'fallback' parameter to overload would not be inherited, so we cannot use inheritance for the behavior we actually want. This module works around the problem by emulating the use overload call we want for each consumer class.

ATTRIBUTES

$bool = $obj->negate
$obj->set_negate($bool)
$attr = NEGATE()

The NEGATE attribute will be added via Test2::Util::HashBase.

METHODS

$clone = $obj->clone_negate()

Create a shallow copy of the object, and call toggle_negate on it.

$obj->toggle_negate()

Toggle the negate attribute. If the attribute was on it will now be off, if it was off it will now be on.

SOURCE

The source code repository for Test2-Suite can be found at https://github.com/Test-More/test-more/.

MAINTAINERS

Chad Granum <exodist@cpan.org>

AUTHORS

Chad Granum <exodist@cpan.org>

COPYRIGHT

Copyright Chad Granum <exodist@cpan.org>.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

See http://dev.perl.org/licenses/