Bug#1111976: libaudio-scan-perl: FTBFS with Perl 5.42: Unparseable XSUB parameter

[Niko Tyni]

Source: libaudio-scan-perl
Version: 1.01-2
Severity: important
Tags: ftbfs forky sid patch upstream
Forwarded: https://rt.cpan.org/Public/Bug/Display.html?id=167903
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/libaudio-scan-perl_1.01-2/libaudio-scan-perl_1.01-2+b5_amd64-2025-08-20T07:17:49Z.build

   "/usr/bin/perl" "/usr/share/perl/5.42/ExtUtils/xsubpp"  -typemap '/usr/share/perl/5.42/ExtUtils/typemap'  Scan.xs > Scan.xsc
   cp lib/Audio/Scan.pm blib/lib/Audio/Scan.pm
   "/usr/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- Scan.bs blib/arch/auto/Audio/Scan/Scan.bs 644
   Unparseable XSUB parameter: 'char *' in Scan.xs, line 217
   Unparseable XSUB parameter: 'char *' in Scan.xs, line 269
   Unparseable XSUB parameter: 'char *' in Scan.xs, line 285
   Unparseable XSUB parameter: 'char *' in Scan.xs, line 309
   Unparseable XSUB parameter: 'char *' in Scan.xs, line 325
   Unparseable XSUB parameter: 'char *' in Scan.xs, line 363
   Please specify prototyping behavior for Scan.xs (see perlxs manual)
   make[1]: *** [Makefile:363: Scan.c] Error 1

This is because of changes in ExtUtils-ParseXS, which
now properly detects invalid XS syntax in this module. See
https://rt.cpan.org/Public/Bug/Display.html?id=162293 for a similar issue
in Crypt-SMIME. The attached patch adopts the technique suggested there
by Dave Mitchell: give the ignored first parameter a name but no type.
This works for on both Perl 5.40 and 5.42.

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
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