[Tts-project] Bug#1097914: speech-dispatcher: ftbfs with GCC-15

[Matthias Klose]

Package: src:speech-dispatcher
Version: 0.11.5-5.1
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/speech-dispatcher_0.11.5-5.1_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

[...]
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   76 |     :                                           \
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   77 |     (g_string_free) ((str), (free_segment)))
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
history.c:310:9: note: in expansion of macro ‘g_string_free’
  310 |         g_string_free(reply, FALSE);
      |         ^~~~~~~~~~~~~
make[4]: *** [Makefile:664: speech_dispatcher-history.o] Error 1
make[4]: *** Waiting for unfinished jobs....
parse.c: In function ‘parse_list’:
/usr/include/glib-2.0/glib/gstring.h:76:5: warning: ignoring return value of ‘g_string_free_and_steal’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   72 |   (__builtin_constant_p (free_segment) ?        \
      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   73 |     ((free_segment) ?                           \
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   74 |       (g_string_free) ((str), (free_segment)) : \
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   75 |       g_string_free_and_steal (str))            \
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   76 |     :                                           \
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   77 |     (g_string_free) ((str), (free_segment)))
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
parse.c:950:17: note: in expansion of macro ‘g_string_free’
  950 |                 g_string_free(result, 0);
      |                 ^~~~~~~~~~~~~
/usr/include/glib-2.0/glib/gstring.h:76:5: warning: ignoring return value of ‘g_string_free_and_steal’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   72 |   (__builtin_constant_p (free_segment) ?        \
      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   73 |     ((free_segment) ?                           \
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   74 |       (g_string_free) ((str), (free_segment)) : \
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   75 |       g_string_free_and_steal (str))            \
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   76 |     :                                           \
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   77 |     (g_string_free) ((str), (free_segment)))
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
parse.c:985:17: note: in expansion of macro ‘g_string_free’
  985 |                 g_string_free(result, 0);
      |                 ^~~~~~~~~~~~~
parse.c: In function ‘parse_get’:
/usr/include/glib-2.0/glib/gstring.h:76:5: warning: ignoring return value of ‘g_string_free_and_steal’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   72 |   (__builtin_constant_p (free_segment) ?        \
      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   73 |     ((free_segment) ?                           \
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   74 |       (g_string_free) ((str), (free_segment)) : \
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   75 |       g_string_free_and_steal (str))            \
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   76 |     :                                           \
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   77 |     (g_string_free) ((str), (free_segment)))
      |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
parse.c:1068:9: note: in expansion of macro ‘g_string_free’
 1068 |         g_string_free(result, 0);
      |         ^~~~~~~~~~~~~
make[4]: Leaving directory '/build/reproducible-path/speech-dispatcher-0.11.5/src/server'
make[3]: *** [Makefile:463: all-recursive] Error 1
make[3]: Leaving directory '/build/reproducible-path/speech-dispatcher-0.11.5/src'
make[2]: *** [Makefile:604: all-recursive] Error 1
make[2]: Leaving directory '/build/reproducible-path/speech-dispatcher-0.11.5'
make[1]: *** [Makefile:490: all] Error 2
make[1]: Leaving directory '/build/reproducible-path/speech-dispatcher-0.11.5'
dh_auto_build: error: make -j8 returned exit code 2
make: *** [debian/rules:30: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2