[Debian-astro-maintainers] Bug#1097161: libahp-gt: ftbfs with GCC-15

Matthias Klose doko at debian.org
Mon Feb 17 17:30:20 GMT 2025


Package: src:libahp-gt
Version: 1.6.7-1
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/libahp-gt_1.6.7-1_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

[...]
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:469:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  469 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 1);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:482:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  482 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 1);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:495:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  495 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 1);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:508:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  508 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 1);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:521:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  521 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 1);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:529:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  529 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 2);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:536:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  536 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 1);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:544:21: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  544 |                     write(devices[ahp_gt_get_current_device()].connfd, msg, 3);
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:551:21: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  551 |                     write(devices[ahp_gt_get_current_device()].connfd, msg, 1);
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:559:21: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  559 |                     write(devices[ahp_gt_get_current_device()].connfd, msg, 1);
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:578:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  578 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 1);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:599:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  599 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 1);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:620:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  620 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 1);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:632:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  632 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 7);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:636:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  636 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 2);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:642:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  642 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 2);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:646:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  646 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 2);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:653:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  653 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 2);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:657:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  657 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 2);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/reproducible-path/libahp-gt-1.6.7/ahp_gt.c:661:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  661 |                 write(devices[ahp_gt_get_current_device()].connfd, msg, 1);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
make[3]: *** [CMakeFiles/ahp_gt.dir/build.make:82: CMakeFiles/ahp_gt.dir/ahp_gt.c.o] Error 1
make[3]: Leaving directory '/build/reproducible-path/libahp-gt-1.6.7/obj-x86_64-linux-gnu'
make[2]: *** [CMakeFiles/Makefile2:90: CMakeFiles/ahp_gt.dir/all] Error 2
make[2]: Leaving directory '/build/reproducible-path/libahp-gt-1.6.7/obj-x86_64-linux-gnu'
make[1]: *** [Makefile:139: all] Error 2
make[1]: Leaving directory '/build/reproducible-path/libahp-gt-1.6.7/obj-x86_64-linux-gnu'
dh_auto_build: error: cd obj-x86_64-linux-gnu && make -j8 "INSTALL=install --strip-program=true" VERBOSE=1 returned exit code 2
make: *** [debian/rules:6: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2



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