Bug#1097172: libcommonmark-perl: ftbfs with GCC-15

[Matthias Klose]

Package: src:libcommonmark-perl
Version: 0.310100-1
Severity: important
Tags: sid forky
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-15

[This bug is NOT targeted to the upcoming trixie release]

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

The package fails to build in a test rebuild on at least amd64 with
gcc-15/g++-15, but succeeds to build with gcc-14/g++-14. The
severity of this report will be raised before the forky release.

The full build log can be found at:
http://qa-logs.debian.net/2025/02/16/amd64exp/libcommonmark-perl_0.310100-1_unstable_gccexp.log.gz
The last lines of the build log are at the end of this report.

To build with GCC 15, either set CC=gcc-15 CXX=g++-15 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++ 

GCC 15 now defaults to the C23/C++23 standards, exposing many FTBFS.
Other Common build failures are new warnings resulting in build failures
with -Werror turned on, or new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-15/porting_to.html

[...]
dpkg-buildpackage: info: source distribution unstable
dpkg-buildpackage: info: source changed by gregor herrmann <gregoa at debian.org>
 dpkg-source --before-build .
dpkg-buildpackage: info: host architecture amd64
 debian/rules clean
dh clean
   dh_clean
 debian/rules binary
dh binary
   dh_update_autotools_config
   dh_autoreconf
   dh_auto_configure
	/usr/bin/perl Makefile.PL INSTALLDIRS=vendor "OPTIMIZE=-g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/libcommonmark-perl-0.310100=. -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/reproducible-path/libcommonmark-perl-0.310100=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wl,-z,relro -Wl,-z,now"
WARNING: Older versions of ExtUtils::MakeMaker may errantly install README.pod as part of this distribution. It is recommended to avoid using this path in CPAN modules.
Checking if your kit is complete...
Looks good
Generating a Unix-style Makefile
Writing Makefile for CommonMark
Writing MYMETA.yml and MYMETA.json
   dh_auto_build
	make -j8
make[1]: Entering directory '/build/reproducible-path/libcommonmark-perl-0.310100'
Running Mkbootstrap for CommonMark ()
"/usr/bin/perl" "/usr/share/perl/5.40/ExtUtils/xsubpp"  -typemap '/usr/share/perl/5.40/ExtUtils/typemap' -typemap '/build/reproducible-path/libcommonmark-perl-0.310100/typemap'  CommonMark.xs > CommonMark.xsc
chmod 644 "CommonMark.bs"
"/usr/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- CommonMark.bs blib/arch/auto/CommonMark/CommonMark.bs 644
cp lib/CommonMark.pod blib/lib/CommonMark.pod
cp lib/CommonMark.pm blib/lib/CommonMark.pm
cp lib/CommonMark/Parser.pod blib/lib/CommonMark/Parser.pod
cp lib/CommonMark/Node.pod blib/lib/CommonMark/Node.pod
cp lib/CommonMark/Iterator.pod blib/lib/CommonMark/Iterator.pod
mv CommonMark.xsc CommonMark.c
x86_64-linux-gnu-gcc -c   -D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fwrapv -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/libcommonmark-perl-0.310100=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2   -DVERSION=\"0.310100\" -DXS_VERSION=\"0.310100\" -fPIC "-I/usr/lib/x86_64-linux-gnu/perl/5.40/CORE"   CommonMark.c
CommonMark.c: In function ‘XS_CommonMark__Node_interface_get_node’:
CommonMark.c:675:18: error: too many arguments to function ‘XSFUNCTION’; expected 0, have 1
  675 |         RETVAL = XSFUNCTION(node);
      |                  ^~~~~~~~~~ ~~~~
CommonMark.c: In function ‘XS_CommonMark__Node_interface_get_int’:
CommonMark.c:701:18: error: too many arguments to function ‘XSFUNCTION’; expected 0, have 1
  701 |         RETVAL = XSFUNCTION(node);
      |                  ^~~~~~~~~~ ~~~~
CommonMark.c: In function ‘XS_CommonMark__Node_interface_set_int’:
CommonMark.c:729:18: error: too many arguments to function ‘XSFUNCTION’; expected 0, have 2
  729 |         RETVAL = XSFUNCTION(node, value);
      |                  ^~~~~~~~~~ ~~~~
CommonMark.c: In function ‘XS_CommonMark__Node_interface_get_utf8’:
CommonMark.c:754:18: error: too many arguments to function ‘XSFUNCTION’; expected 0, have 1
  754 |         RETVAL = XSFUNCTION(node);
      |                  ^~~~~~~~~~ ~~~~
CommonMark.c: In function ‘XS_CommonMark__Node_interface_set_utf8’:
CommonMark.c:783:18: error: too many arguments to function ‘XSFUNCTION’; expected 0, have 2
  783 |         RETVAL = XSFUNCTION(node, value);
      |                  ^~~~~~~~~~ ~~~~
CommonMark.c: In function ‘XS_CommonMark__Node_interface_move_node’:
CommonMark.c:882:18: error: too many arguments to function ‘XSFUNCTION’; expected 0, have 2
  882 |         RETVAL = XSFUNCTION(node, other);
      |                  ^~~~~~~~~~ ~~~~
CommonMark.c: In function ‘XS_CommonMark__Node_interface_render’:
CommonMark.c:920:18: error: too many arguments to function ‘XSFUNCTION’; expected 0, have 2
  920 |         RETVAL = XSFUNCTION(root, options);
      |                  ^~~~~~~~~~ ~~~~
CommonMark.c: In function ‘XS_CommonMark__Node_interface_render_width’:
CommonMark.c:966:18: error: too many arguments to function ‘XSFUNCTION’; expected 0, have 3
  966 |         RETVAL = XSFUNCTION(root, options, width);
      |                  ^~~~~~~~~~ ~~~~
make[1]: *** [Makefile:348: CommonMark.o] Error 1
make[1]: Leaving directory '/build/reproducible-path/libcommonmark-perl-0.310100'
dh_auto_build: error: make -j8 returned exit code 2
make: *** [debian/rules:6: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2