Bug#1111895: libhtml-html5-builder-perl: FTBFS with Perl 5.42: Undefined subroutine &Scalar::Util::refaddr called

[Niko Tyni]

Source: libhtml-html5-builder-perl
Version: 0.004-5
Severity: important
Tags: ftbfs forky sid upstream
User: debian-perl at 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-throwaway/libhtml-html5-builder-perl_0.004-5/libhtml-html5-builder-perl_0.004-5_amd64-2025-08-22T10:47:46Z.build

   /usr/bin/perl Makefile.PL INSTALLDIRS=vendor "OPTIMIZE=-g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/libhtml-html5-builder-perl-7jLXFu/libhtml-html5-builder-perl-0.004=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2" "LD=x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/libhtml-html5-builder-perl-7jLXFu/libhtml-html5-builder-perl-0.004=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wl,-z,relro"
   *** Module::AutoInstall version 1.03
   *** Checking for Perl dependencies...
   [Core Features]
   - ExtUtils::MakeMaker   ...loaded. (7.76 >= 6.42)
   - Test::More            ...missing. (would need 0.61)
   - common::sense         ...loaded. (3.75)
   - Scalar::Util          ...loaded. (1.21)
   - HTML::HTML5::Writer   ...loaded. (0.201)
   - HTML::HTML5::Entities ...loaded. (0.004 >= 0.001)
   - Carp                  ...loaded. (1.54)
   - XML::LibXML           ...loaded. (2.0134 >= 1.60)
   *** Module::AutoInstall configuration finished.
   Checking if your kit is complete...
   Looks good
   Generating a Unix-style Makefile
   Writing Makefile for HTML::HTML5::Builder
   CPAN::Meta::YAML->errstr and $CPAN::Meta::YAML::errstr is deprecated at /usr/share/perl/5.42/CPAN/Meta.pm line 627.
   Undefined subroutine &Scalar::Util::refaddr called
    at /usr/share/perl/5.42/ExtUtils/MM_Any.pm line 1702.
   END failed--call queue aborted.

It looks like this is because there's a bundled and stripped version of
Scalar::Util in inc/ that doesn't have refaddr(), but ExtUtils::MakeMaker
now requires it. I expect that removing the bundled version will fix
the issue.

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,
-- 
Niko Tyni   ntyni at debian.org