Package: src:glhack
Version: 1.2-7
Severity: important
Tags: sid forky
User: debian-...@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/glhack_1.2-7_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

[...]
SHELL=/bin/sh
USER=user42

dpkg-buildpackage
-----------------

Command: dpkg-buildpackage --sanitize-env -us -uc -b
dpkg-buildpackage: info: source package glhack
dpkg-buildpackage: info: source version 1.2-7
dpkg-buildpackage: info: source distribution unstable
dpkg-buildpackage: info: source changed by Niels Thykier <ni...@thykier.net>
 dpkg-source --before-build .
dpkg-buildpackage: info: host architecture amd64
 debian/rules clean
dh clean --no-parallel
   dh_auto_clean -O--no-parallel
        make -j1 clean
make[1]: Entering directory '/build/reproducible-path/glhack-1.2'
( cd src ; make clean )
make[2]: Entering directory '/build/reproducible-path/glhack-1.2/src'
rm -f *.o ../src/hack.h-t ../src/config.h-t
make[2]: Leaving directory '/build/reproducible-path/glhack-1.2/src'
( cd util ; make clean )
make[2]: Entering directory '/build/reproducible-path/glhack-1.2/util'
rm -f *.o
make[2]: Leaving directory '/build/reproducible-path/glhack-1.2/util'
make[1]: Leaving directory '/build/reproducible-path/glhack-1.2'
   dh_autoreconf_clean -O--no-parallel
   dh_clean -O--no-parallel
 debian/rules binary
dh binary --no-parallel
   dh_update_autotools_config -O--no-parallel
   dh_autoreconf -O--no-parallel
   dh_auto_configure -O--no-parallel
   debian/rules override_dh_auto_build
make[1]: Entering directory '/build/reproducible-path/glhack-1.2'
dh_auto_build -- CC="cc -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/glhack-1.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -fcf-protection -Wall -Wdate-time -D_FORTIFY_SOURCE=2" 
LINK="cc -Wl,-z,relro -Wl,-z,now -Wl,--as-needed"
        make -j1 "INSTALL=install --strip-program=true" "CC=cc -Wl,-z,relro 
-Wl,-z,now -Wl,--as-needed -g -O2 -Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/glhack-1.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -fcf-protection -Wall -Wdate-time -D_FORTIFY_SOURCE=2" 
"LINK=cc -Wl,-z,relro -Wl,-z,now -Wl,--as-needed"
make[2]: Entering directory '/build/reproducible-path/glhack-1.2'
( cd src ; make )
make[3]: Entering directory '/build/reproducible-path/glhack-1.2/src'
touch ../src/config.h-t
cc -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/glhack-1.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -fcf-protection -Wall -Wdate-time -D_FORTIFY_SOURCE=2 
-O -I../include -I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT -c monst.c
In file included from ../include/unixconf.h:282,
                 from ../include/global.h:150,
                 from ../include/config.h:393,
                 from monst.c:5:
/usr/include/stdlib.h:601:13: error: conflicting types for ‘srand48’; have 
‘void(long int)’
  601 | extern void srand48 (long int __seedval) __THROW;
      |             ^~~~~~~
In file included from ../include/unixconf.h:279:
../include/system.h:91:8: note: previous declaration of ‘srand48’ with type 
‘void(void)’
   91 | E void srand48();
      |        ^~~~~~~
In file included from ../include/unixconf.h:283:
/usr/include/unistd.h:464:21: error: conflicting types for ‘sleep’; have 
‘unsigned int(unsigned int)’
  464 | extern unsigned int sleep (unsigned int __seconds);
      |                     ^~~~~
../include/system.h:349:12: note: previous declaration of ‘sleep’ with type 
‘unsigned int(void)’
  349 | E unsigned sleep();
      |            ^~~~~
make[3]: *** [Makefile:487: monst.o] Error 1
make[3]: Leaving directory '/build/reproducible-path/glhack-1.2/src'
make[2]: *** [Makefile:100: glhack] Error 2
make[2]: Leaving directory '/build/reproducible-path/glhack-1.2'
dh_auto_build: error: make -j1 "INSTALL=install --strip-program=true" "CC=cc 
-Wl,-z,relro -Wl,-z,now -Wl,--as-needed -g -O2 
-Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/glhack-1.2=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -fcf-protection -Wall -Wdate-time -D_FORTIFY_SOURCE=2" 
"LINK=cc -Wl,-z,relro -Wl,-z,now -Wl,--as-needed" returned exit code 2
make[1]: *** [debian/rules:19: override_dh_auto_build] Error 25
make[1]: Leaving directory '/build/reproducible-path/glhack-1.2'
make: *** [debian/rules:33: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2

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