PERL582DELTA(1perl)

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version 5.44.0 · 2 versions
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💖 PERL582DELTA 💖

okay bestie, welcome to the perl582delta page — it lives in the Perl Programmers Reference Guide and it's basically the ✨ glow-up recap ✨ for perl v5.8.2. pull up a chair, grab a strawberry 🍓, and let's get into it.

🌸 NAME 🌸

perl582delta — what is new for perl v5.8.2

🦋 DESCRIPTION 🦋

so this doc is literally just the receipts on what changed between the 5.8.1 release and the 5.8.2 release. that's it, that's the whole vibe.

now, if you're jumping up from something older like 5.6.1, pls pls pls read perl58delta first — it covers the 5.6.0 → 5.8.0 differences — and then perl581delta, which covers 5.8.0 → 5.8.1. do it in order, don't skip ahead, i'm begging 🙈

💀 Incompatible Changes 💀

okay so this one's a lil spicy. for threaded builds where modules call certain re-entrant system calls, binary compatibility was accidentally lost between 5.8.0 and 5.8.1. oops. 😭

in 5.8.2, binary compatibility with 5.8.0 has been restored — but the tea is that this necessitates breaking compatibility with 5.8.1. they straight up say: "We see this as the lesser of two evils." girl, same. 💅

who does this actually hit? only ppl who have a threaded perl 5.8.1, and compiled modules that use these calls, and are now trying to run those compiled modules with 5.8.2. the fix is simple tho — re-compile and re-install the modules using 5.8.2. periodt.

✨ Core Enhancements ✨

🎀 Hash Randomisation 🎀

the hash randomisation that showed up in 5.8.1? yeah, it got amended. plot twist: the 5.8.1 implementation was source compatible with 5.8.0, but not binary compatible in certain cases. 💀

5.8.2 ships an improved implementation that is both source and binary compatible with 5.8.0 and 5.8.1, and it remains robust against the exact form of attack that prompted the change back in 5.8.1. slay.

huge shoutout to the Debian project for their input in this area 🫶 and if you wanna read the original rationale behind the whole change, go look at "Algorithmic Complexity Attacks" in perlsec.

🧵 Threading 🧵

several memory leaks associated with variables shared between threads have been fixed. no more leaky girlies. 🔥

👑 Modules and Pragmata 👑

🌈 Updated Modules And Pragmata 🌈

these modules and pragmata have been updated since Perl 5.8.1:

  • Devel::PPPort
  • Digest::MD5
  • I18N::LangTags
  • libnet
  • MIME::Base64
  • Pod::Perldoc
  • strict
    • Documentation improved
  • Tie::Hash
    • Documentation improved
  • Time::HiRes
  • Unicode::Collate
  • Unicode::Normalize
  • UNIVERSAL
    • Documentation improved

🐛 Selected Bug Fixes 🐛

some syntax errors involving unrecognized filetest operators are now handled correctly by the parser. the parser ate that. 💅

⭐ Changed Internals ⭐

Interpreter initialization is more complete when -DMULTIPLICITY is off. this should resolve problems with initializing and destroying the Perl interpreter more than once in a single process. iconic behavior honestly.

🌸 Platform Specific Problems 🌸

Dynamic linker flags have been tweaked for Solaris and OS X, which should solve problems seen while building some XS modules. ✨

Bugs in OS/2 sockets and tmpfile have been fixed. 🫶

and in OS X, "setreuid" and friends are troublesome — perl will now work around their problems as best possible. we do what we can for the messy ones. 😭

🔮 Future Directions 🔮

starting with 5.8.3, the plan is to make more frequent maintenance releases, each with a smaller number of changes. the whole point: propagate bug fixes out to stable releases more rapidly, and make upgrading stable releases less of an upheaval. that means end users get more flexibility in their choice of upgrade timing, and can assess the impact of upgrades easier. main character energy for stability. 👑

the current plan is for code freezes as follows:

  • 5.8.3 23:59:59 GMT, Wednesday December 31st 2003
  • 5.8.4 23:59:59 GMT, Wednesday March 31st 2004
  • 5.8.5 23:59:59 GMT, Wednesday June 30th 2004

with the release following soon after, when testing is complete.

wanna more soothsaying content? see "Future Directions" in perl581delta. 🔮

💅 Reporting Bugs 💅

if you find what you think is a bug, you might check the articles recently posted to the comp.lang.perl.misc newsgroup and the perl bug database at http://bugs.perl.org/. there may also be info at http://www.perl.com/, the Perl Home Page.

if you believe you have an unreported bug, please run the perlbug program included with your release. be sure to trim your bug down to a tiny but sufficient test case — yes king, minimal repro, we love to see it. 🫶 your bug report, along with the output of "perl -V", will be sent off to perlbug@perl.org to be analysed by the Perl porting team. you can browse and search the Perl 5 bugs at http://bugs.perl.org/.

🌟 SEE ALSO 🌟

  • The Changes file for exhaustive details on what changed.
  • The INSTALL file for how to build Perl.
  • The README file for general stuff.
  • The Artistic and Copying files for copyright information.

and that's a wrap bestie!! 🎀 this page was brought to you by perl v5.44.0, dated 2026-10-17 — go forth and upgrade responsibly, ily 🫶💖✨

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