[Debian-med-packaging] Bug#1096727: gmap: ftbfs with GCC-15

[Matthias Klose]

Package: src:gmap
Version: 2024-11-20+ds-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/gmap_2024-11-20+ds-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

[...]
    7 | typedef unsigned char bool;
      | ^~~~~~~
In file included from ../../src/gmap_select.c:1:
../../src/bool.h:7:23: error: ‘bool’ cannot be defined via ‘typedef’
    7 | typedef unsigned char bool;
      |                       ^~~~
../../src/bool.h:7:23: note: ‘bool’ is a keyword with ‘-std=c23’ onwards
../../src/bool.h:7:1: warning: useless type name in empty declaration
    7 | typedef unsigned char bool;
      | ^~~~~~~
In file included from ../../src/cpuid.h:4,
                 from ../../src/cpuid.c:6:
../../src/bool.h:7:23: error: ‘bool’ cannot be defined via ‘typedef’
    7 | typedef unsigned char bool;
      |                       ^~~~
../../src/bool.h:7:23: note: ‘bool’ is a keyword with ‘-std=c23’ onwards
../../src/bool.h:7:1: warning: useless type name in empty declaration
    7 | typedef unsigned char bool;
      | ^~~~~~~
In file included from ../../src/gmapl_select.c:1:
../../src/bool.h:7:23: error: ‘bool’ cannot be defined via ‘typedef’
    7 | typedef unsigned char bool;
      |                       ^~~~
../../src/bool.h:7:23: note: ‘bool’ is a keyword with ‘-std=c23’ onwards
../../src/bool.h:7:1: warning: useless type name in empty declaration
    7 | typedef unsigned char bool;
      | ^~~~~~~
In file included from ../../src/cpuid.h:4,
                 from ../../src/cpuid.c:6:
../../src/bool.h:7:23: error: ‘bool’ cannot be defined via ‘typedef’
    7 | typedef unsigned char bool;
      |                       ^~~~
../../src/bool.h:7:23: note: ‘bool’ is a keyword with ‘-std=c23’ onwards
../../src/bool.h:7:1: warning: useless type name in empty declaration
    7 | typedef unsigned char bool;
      | ^~~~~~~
make[4]: *** [Makefile:27297: gmapl-cpuid.o] Error 1
make[4]: *** Waiting for unfinished jobs....
In file included from ../../src/except.c:11:
../../src/bool.h:7:23: error: ‘bool’ cannot be defined via ‘typedef’
    7 | typedef unsigned char bool;
      |                       ^~~~
../../src/bool.h:7:23: note: ‘bool’ is a keyword with ‘-std=c23’ onwards
../../src/bool.h:7:1: warning: useless type name in empty declaration
    7 | typedef unsigned char bool;
      | ^~~~~~~
make[4]: *** [Makefile:15495: get_genome-except.o] Error 1
make[4]: *** [Makefile:15887: gmap-cpuid.o] Error 1
make[4]: *** [Makefile:15481: cpuid-cpuid.o] Error 1
In file included from ../../src/mem.c:11:
../../src/bool.h:7:23: error: ‘bool’ cannot be defined via ‘typedef’
    7 | typedef unsigned char bool;
      |                       ^~~~
../../src/bool.h:7:23: note: ‘bool’ is a keyword with ‘-std=c23’ onwards
../../src/bool.h:7:1: warning: useless type name in empty declaration
    7 | typedef unsigned char bool;
      | ^~~~~~~
make[4]: *** [Makefile:15901: gmap-gmap_select.o] Error 1
make[4]: *** [Makefile:15523: get_genome-mem.o] Error 1
make[4]: *** [Makefile:27311: gmapl-gmapl_select.o] Error 1
make[4]: Leaving directory '/build/reproducible-path/gmap-2024-11-20+ds/build/src'
make[3]: *** [Makefile:9588: all] Error 2
make[3]: Leaving directory '/build/reproducible-path/gmap-2024-11-20+ds/build/src'
make[2]: *** [Makefile:404: all-recursive] Error 1
make[2]: Leaving directory '/build/reproducible-path/gmap-2024-11-20+ds/build'
dh_auto_build: error: cd build && make -j8 returned exit code 2
make[1]: *** [debian/rules:48: override_dh_auto_build] Error 25
make[1]: Leaving directory '/build/reproducible-path/gmap-2024-11-20+ds'
make: *** [debian/rules:17: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2