Changelog:NAME    perldelta - what is new for perl v5.40.1DESCRIPTION    This document describes differences between the 5.40.0 release and the    5.40.1 release.    If you are upgrading from an earlier release such as 5.39.0, first read    perl5400delta, which describes differences between 5.39.0 and 5.40.0.Incompatible Changes    There are no changes intentionally incompatible with 5.40.0. If any    exist, they are bugs, and we request that you submit a report. See    "Reporting Bugs" below.Modules and Pragmata  Updated Modules and Pragmata    *   File::Spec has been upgraded from version 3.90 to 3.91.    *   Module::CoreList has been upgraded from version 5.20240609 to        5.20250118_40.    *   warnings has been upgraded from version 1.69 to 1.70.Documentation  Changes to Existing Documentation    We have attempted to update the documentation to reflect the changes    listed in this document. If you find any we have missed, open an issue    at <https://github.com/Perl/perl5/issues>.Configuration and Compilation    *   Fixed compilation on platforms (e.g. "Gentoo Prefix") with only a C        locale. [GH #22569 <Perl/perl5#22569>] Bug        first reported downstream at bugs.gentoo.org/939014        <https://bugs.gentoo.org/939014>.    *   Fixed compilation error on some systems due to a typo in a printf()        format. [GH #22793 <Perl/perl5#22793>]Testing    Tests were added and changed to reflect the other additions and changes    in this release.Selected Bug Fixes    *   Starting in Perl 5.39.8, ""strftime"" in POSIX would crash or        produce odd errors (such as "Out of memory in        perl:util:safesysmalloc") when given a format string that wasn't        actually a string, but a number, "undef", or an object (even one        with overloaded string conversion).        Now "strftime" stringifies its first argument, as before. [GH #22498        <Perl/perl5#22498>]    *   Builds with "-msse" and quadmath on 32-bit x86 systems would crash        with a misaligned access early in the build. [GH #22577        <Perl/perl5#22577>]    *   Using "goto" to tail call, or using the call_sv() and related APIs        to call, any of trim(), refaddr(), reftype(), ceil(), floor() or        stringify() in the "builtin::" package would crash or assert due to        a "TARG" handling bug. [GH #22542        <Perl/perl5#22542>]    *   Fixed an issue where utf8n_to_uvchr() failed to correctly identify        certain invalid UTF-8 sequences as invalid. Specifically, sequences        that start with continuation bytes or unassigned bytes could cause        unexpected behaviour or a panic. This fix ensures that such invalid        sequences are now properly detected and handled. This correction        also resolves related issues in modules that handle UTF-8        processing, such as Encode.    *   Fixed a double free error or possible memory leak when failing to        compile certain regexps. [GH #21661        <Perl/perl5#21661>]