Source: libmemcached-libmemcached-perl
Version: 1.001801+dfsg-5
Severity: important
Tags: ftbfs forky sid patch
User: debian-perl@lists.debian.org
Usertags: perl-5.42-transition

This package fails to build with Perl 5.42 (currently in experimental.)

https://perl.debian.net/rebuild-logs/perl-5.42/libmemcached-libmemcached-perl_1.001801+dfsg-5/libmemcached-libmemcached-perl_1.001801+dfsg-5+b3_amd64-2025-08-23T12:42:44Z.build

  "/usr/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- libmemcached.bs blib/arch/auto/Memcached/libmemcached/libmemcached.bs 644
  Substitution replacement not terminated at (eval 459) line 8, <GEN0> line 994.
  mv libmemcached.xsc libmemcached.c
[...]
  Not a CODE reference at /build/libmemcached-libmemcached-perl-0Dp8aB/libmemcached-libmemcached-perl-1.001801+dfsg/blib/lib/Memcached/libmemcached.pm line 492.
  # Looks like your test exited with 255 before it could output anything.
  t/10-set-get.t ...................
  1..14
  Dubious, test returned 255 (wstat 65280, 0xff00)
  Failed 14/14 subtests

It turns out that the package bundles a customized fork of an old
ExtUtils::ParseXS version, which is no longer quite compatible with the
main typemap file bundled with Perl core. See the description in the
attached proposed patch for details. This seems to work for me with both
Perl 5.40 and 5.42.

While we modify the Debian package build quite a bit by linking against
the system libmemcached, I suspect (but haven't tested) that this issue
also happens with an unmodified upstream build. The test suite needs a
running memcached server for the most part, so CPAN testers don't really
cover the full functionality. Also, they don't show the full build log,
so the "Substitution replacement not terminated" symptom is not visible.

I also briefly tried removing the bundled EU::ParseXS stuff, but the
test suite totally blew up because the module typemap file relies on the
customizations (at least $length_var). So I suppose the best we can do
is patch the bundled one to keep it working.

If you want to test changes against Perl 5.42 in experimental and run
into uninstallability problems, there is a test repository of rebuilt
Debian sid packages for amd64 available at <https://perl.debian.net/>.

Thanks for your work on Debian,

Hello,

Bug #1111915 in libmemcached-libmemcached-perl reported by you has been fixed in the
Git repository and is awaiting an upload. You can see the commit
message below and you can check the diff of the fix at:

https://salsa.debian.org/perl-team/modules/packages/libmemcached-libmemcached-perl/-/commit/13380f03e521d639ecad10b3f6fb50fff80427cd
------------------------------------------------------------------------
Add patch from Niko Tyni to adapt to ExtUtils::ParseXS changes in Perl 5.42.

Closes: #1111915
------------------------------------------------------------------------

(this message was generated automatically)
-- 
Greetings

https://bugs.debian.org/1111915

We believe that the bug you reported is fixed in the latest version of
libmemcached-libmemcached-perl, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1111915@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
gregor herrmann <gregoa@debian.org> (supplier of updated libmemcached-libmemcached-perl package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sun, 24 Aug 2025 01:12:42 +0200
Source: libmemcached-libmemcached-perl
Architecture: source
Version: 1.001801+dfsg-6
Distribution: unstable
Urgency: medium
Maintainer: Debian Perl Group <pkg-perl-maintainers@lists.alioth.debian.org>
Changed-By: gregor herrmann <gregoa@debian.org>
Closes: 1111915
Changes:
 libmemcached-libmemcached-perl (1.001801+dfsg-6) unstable; urgency=medium
 .
   * Team upload.
   * Add patch from Niko Tyni to adapt to ExtUtils::ParseXS changes in
     Perl 5.42. (Closes: #1111915)
   * Declare compliance with Debian Policy 4.7.2.
   * Remove «Rules-Requires-Root: no», which is the current default.
   * Remove «Priority: optional», which is the current default.
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