Bug#1096555: dx: ftbfs with GCC-15

Mon Feb 17 17:10:56 GMT 2025

Package: src:dx
Version: 1:4.4.4-18
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/dx_4.4.4-18_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

[...]
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c productarray.c  -fPIC -DPIC -o .libs/productarray.o
cc1: warning: command-line option '-std=c++11' is valid for C++/ObjC++ but not for C
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c productarray.c -o productarray.o >/dev/null 2>&1
/bin/bash ../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include  -Dlinux  -Wdate-time -D_FORTIFY_SOURCE=2   -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c -o mesharray.lo mesharray.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c mesharray.c  -fPIC -DPIC -o .libs/mesharray.o
cc1: warning: command-line option '-std=c++11' is valid for C++/ObjC++ but not for C
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c mesharray.c -o mesharray.o >/dev/null 2>&1
/bin/bash ../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include  -Dlinux  -Wdate-time -D_FORTIFY_SOURCE=2   -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c -o xform.lo xform.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c xform.c  -fPIC -DPIC -o .libs/xform.o
cc1: warning: command-line option '-std=c++11' is valid for C++/ObjC++ but not for C
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c xform.c -o xform.o >/dev/null 2>&1
/bin/bash ../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include  -Dlinux  -Wdate-time -D_FORTIFY_SOURCE=2   -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c -o lbscreen.lo lbscreen.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c lbscreen.c  -fPIC -DPIC -o .libs/lbscreen.o
cc1: warning: command-line option '-std=c++11' is valid for C++/ObjC++ but not for C
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c lbscreen.c -o lbscreen.o >/dev/null 2>&1
/bin/bash ../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include  -Dlinux  -Wdate-time -D_FORTIFY_SOURCE=2   -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c -o lbprivate.lo lbprivate.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c lbprivate.c  -fPIC -DPIC -o .libs/lbprivate.o
cc1: warning: command-line option '-std=c++11' is valid for C++/ObjC++ but not for C
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c lbprivate.c -o lbprivate.o >/dev/null 2>&1
/bin/bash ../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include  -Dlinux  -Wdate-time -D_FORTIFY_SOURCE=2   -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c -o lbmessage.lo lbmessage.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c lbmessage.c  -fPIC -DPIC -o .libs/lbmessage.o
cc1: warning: command-line option '-std=c++11' is valid for C++/ObjC++ but not for C
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c lbmessage.c -o lbmessage.o >/dev/null 2>&1
/bin/bash ../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include  -Dlinux  -Wdate-time -D_FORTIFY_SOURCE=2   -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c -o timing.lo timing.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c timing.c  -fPIC -DPIC -o .libs/timing.o
cc1: warning: command-line option '-std=c++11' is valid for C++/ObjC++ but not for C
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c timing.c -o timing.o >/dev/null 2>&1
/bin/bash ../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include  -Dlinux  -Wdate-time -D_FORTIFY_SOURCE=2   -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c -o lock.lo lock.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c lock.c  -fPIC -DPIC -o .libs/lock.o
cc1: warning: command-line option '-std=c++11' is valid for C++/ObjC++ but not for C
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c lock.c -o lock.o >/dev/null 2>&1
/bin/bash ../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include  -Dlinux  -Wdate-time -D_FORTIFY_SOURCE=2   -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c -o plock.lo plock.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c plock.c  -fPIC -DPIC -o .libs/plock.o
cc1: warning: command-line option '-std=c++11' is valid for C++/ObjC++ but not for C
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c plock.c -o plock.o >/dev/null 2>&1
/bin/bash ../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include  -Dlinux  -Wdate-time -D_FORTIFY_SOURCE=2   -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c -o stringtable.lo stringtable.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c stringtable.c  -fPIC -DPIC -o .libs/stringtable.o
cc1: warning: command-line option '-std=c++11' is valid for C++/ObjC++ but not for C
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c stringtable.c -o stringtable.o >/dev/null 2>&1
/bin/bash ../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include  -Dlinux  -Wdate-time -D_FORTIFY_SOURCE=2   -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c -o client.lo client.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../include -I../../../include -Dlinux -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/dx-4.4.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fsigned-char -fno-strict-aliasing -std=c++11 -D_GNU_SOURCE -c client.c  -fPIC -DPIC -o .libs/client.o
cc1: warning: command-line option '-std=c++11' is valid for C++/ObjC++ but not for C
client.c: In function 'DXConnectToServer':
client.c:140:21: error: conflicting types for 'gethostbyname'; have 'struct hostent *(void)'
  140 |     struct hostent *gethostbyname();
      |                     ^~~~~~~~~~~~~
In file included from client.c:37:
/usr/include/netdb.h:142:24: note: previous declaration of 'gethostbyname' with type 'struct hostent *(const char *)'
  142 | extern struct hostent *gethostbyname (const char *__name);
      |                        ^~~~~~~~~~~~~
client.c:174:14: error: too many arguments to function 'gethostbyname'; expected 0, have 1
  174 |         hp = gethostbyname(host);
      |              ^~~~~~~~~~~~~ ~~~~
client.c:140:21: note: declared here
  140 |     struct hostent *gethostbyname();
      |                     ^~~~~~~~~~~~~
make[6]: *** [Makefile:886: client.lo] Error 1
make[6]: Leaving directory '/build/reproducible-path/dx-4.4.4/src/exec/libdx'
make[5]: *** [Makefile:627: all] Error 2
make[5]: Leaving directory '/build/reproducible-path/dx-4.4.4/src/exec/libdx'
make[4]: *** [Makefile:585: all-recursive] Error 1
make[4]: Leaving directory '/build/reproducible-path/dx-4.4.4/src/exec'
make[3]: *** [Makefile:408: all-recursive] Error 1
make[3]: Leaving directory '/build/reproducible-path/dx-4.4.4/src'
make[2]: *** [Makefile:442: all-recursive] Error 1
make[2]: Leaving directory '/build/reproducible-path/dx-4.4.4'
make[1]: *** [debian/rules:40: override_dh_auto_build] Error 2
make[1]: Leaving directory '/build/reproducible-path/dx-4.4.4'
make: *** [debian/rules:18: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2