[Debian-med-packaging] Bug#1096420: cde: ftbfs with GCC-15

[Matthias Klose]

Package: src:cde
Version: 0.1+git9-g551e54d-2
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/cde_0.1+git9-g551e54d-2_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

[...]
      |                                           ^~~~~~~~~~
syscall.c:243:57: warning: ‘qual_desc’ used but never defined
  243 | static int qual_syscall(), qual_signal(), qual_fault(), qual_desc();
      |                                                         ^~~~~~~~~
file.c:2616:1: warning: ‘decode_mknod’ defined but not used [-Wunused-function]
 2616 | decode_mknod(struct tcb *tcp, int offset)
      | ^~~~~~~~~~~~
file.c:2461:1: warning: ‘decode_chmod’ defined but not used [-Wunused-function]
 2461 | decode_chmod(struct tcb *tcp, int offset)
      | ^~~~~~~~~~~~
file.c:2311:1: warning: ‘decode_readlink’ defined but not used [-Wunused-function]
 2311 | decode_readlink(struct tcb *tcp, int offset)
      | ^~~~~~~~~~~~~~~
file.c:2227:26: warning: ‘unlinkatflags’ defined but not used [-Wunused-const-variable=]
 2227 | static const struct xlat unlinkatflags[] = {
      |                          ^~~~~~~~~~~~~
file.c:2060:1: warning: ‘decode_mkdir’ defined but not used [-Wunused-function]
 2060 | decode_mkdir(struct tcb *tcp, int offset)
      | ^~~~~~~~~~~~
file.c:1021:26: warning: ‘fileflags’ defined but not used [-Wunused-const-variable=]
 1021 | static const struct xlat fileflags[] = {
      |                          ^~~~~~~~~
file.c:564:1: warning: ‘decode_access’ defined but not used [-Wunused-function]
  564 | decode_access(struct tcb *tcp, int offset)
      | ^~~~~~~~~~~~~
file.c:455:1: warning: ‘decode_open’ defined but not used [-Wunused-function]
  455 | decode_open(struct tcb *tcp, int offset)
      | ^~~~~~~~~~~
syscall.c:476:1: warning: ‘dumpio’ defined but not used [-Wunused-function]
  476 | dumpio(struct tcb *tcp)
      | ^~~~~~
syscall.c:375:1: warning: ‘qual_desc’ defined but not used [-Wunused-function]
  375 | qual_desc(const char *s, int bitflag, int not)
      | ^~~~~~~~~
syscall.c:369:1: warning: ‘qual_fault’ defined but not used [-Wunused-function]
  369 | qual_fault(const char *s, int bitflag, int not)
      | ^~~~~~~~~~
syscall.c:342:1: warning: ‘qual_signal’ defined but not used [-Wunused-function]
  342 | qual_signal(const char *s, int bitflag, int not)
      | ^~~~~~~~~~~
syscall.c:304:1: warning: ‘qual_syscall’ defined but not used [-Wunused-function]
  304 | qual_syscall(const char *s, int bitflag, int not)
      | ^~~~~~~~~~~~
make[4]: *** [Makefile:543: syscall.o] Error 1
mv -f .deps/io.Tpo .deps/io.Po
file.c: In function ‘sprinttime’:
file.c:827:68: warning: ‘:’ directive output may be truncated writing 1 byte into a region of size between 0 and 18 [-Wformat-truncation=]
  827 |                 snprintf(buf, sizeof buf, "%02d/%02d/%02d-%02d:%02d:%02d",
      |                                                                    ^
file.c:827:17: note: ‘snprintf’ output between 18 and 72 bytes into a destination of size 32
  827 |                 snprintf(buf, sizeof buf, "%02d/%02d/%02d-%02d:%02d:%02d",
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  828 |                         tmp->tm_year + 1900, tmp->tm_mon + 1, tmp->tm_mday,
      |                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  829 |                         tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
      |                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mv -f .deps/ipc.Tpo .deps/ipc.Po
mv -f .deps/desc.Tpo .deps/desc.Po
mv -f .deps/file.Tpo .deps/file.Po
mv -f .deps/strace.Tpo .deps/strace.Po
make[4]: Leaving directory '/build/reproducible-path/cde-0.1+git9-g551e54d/strace-4.6'
make[3]: *** [Makefile:601: all-recursive] Error 1
make[3]: Leaving directory '/build/reproducible-path/cde-0.1+git9-g551e54d/strace-4.6'
make[2]: *** [Makefile:375: all] Error 2
make[2]: Leaving directory '/build/reproducible-path/cde-0.1+git9-g551e54d/strace-4.6'
make[1]: *** [Makefile:7: all] Error 2
make[1]: Leaving directory '/build/reproducible-path/cde-0.1+git9-g551e54d'
dh_auto_build: error: make -j8 "INSTALL=install --strip-program=true" returned exit code 2
make: *** [debian/rules:38: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2