[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/gap_4.14.0-3_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 [...] | struct OpaqueBag * (*)(struct OpaqueBag *, struct OpaqueBag *, struct OpaqueBag *, struct OpaqueBag *) src/calls.h:173:59: note: expected ‘ObjFunc’ {aka ‘struct OpaqueBag * (*)(void)’} but argument is of type ‘struct OpaqueBag * (*)(struct OpaqueBag *, struct OpaqueBag *, struct OpaqueBag *, struct OpaqueBag *)’ 173 | EXPORT_INLINE void SET_HDLR_FUNC(Obj func, Int i, ObjFunc hdlr) | ~~~~~~~~^~~~ src/bool.c:224:12: note: ‘ReturnFalse3’ declared here 224 | static Obj ReturnFalse3(Obj self, Obj val1, Obj val2, Obj val3) | ^~~~~~~~~~~~ src/common.h:168:16: note: ‘ObjFunc’ declared here 168 | typedef Obj (* ObjFunc) (/*arguments*/); | ^~~~~~~ src/bool.c:416:50: error: passing argument 4 of ‘NewFunctionC’ from incompatible pointer type [-Wincompatible-pointer-types] 416 | tmp = NewFunctionC("RETURN_FAIL", -1, "arg", ReturnFail1); | ^~~~~~~~~~~ | | | struct OpaqueBag * (*)(struct OpaqueBag *, struct OpaqueBag *) src/calls.h:454:31: note: expected ‘ObjFunc’ {aka ‘struct OpaqueBag * (*)(void)’} but argument is of type ‘struct OpaqueBag * (*)(struct OpaqueBag *, struct OpaqueBag *)’ 454 | ObjFunc hdlr); | ~~~~~~~~~~~~~^~~~ src/bool.c:236:12: note: ‘ReturnFail1’ declared here 236 | static Obj ReturnFail1(Obj self, Obj val1) | ^~~~~~~~~~~ src/common.h:168:16: note: ‘ObjFunc’ declared here 168 | typedef Obj (* ObjFunc) (/*arguments*/); | ^~~~~~~ src/bool.c:417:28: error: passing argument 3 of ‘SET_HDLR_FUNC’ from incompatible pointer type [-Wincompatible-pointer-types] 417 | SET_HDLR_FUNC( tmp, 1, ReturnFail1); | ^~~~~~~~~~~ | | | struct OpaqueBag * (*)(struct OpaqueBag *, struct OpaqueBag *) src/calls.h:173:59: note: expected ‘ObjFunc’ {aka ‘struct OpaqueBag * (*)(void)’} but argument is of type ‘struct OpaqueBag * (*)(struct OpaqueBag *, struct OpaqueBag *)’ 173 | EXPORT_INLINE void SET_HDLR_FUNC(Obj func, Int i, ObjFunc hdlr) | ~~~~~~~~^~~~ src/bool.c:236:12: note: ‘ReturnFail1’ declared here 236 | static Obj ReturnFail1(Obj self, Obj val1) | ^~~~~~~~~~~ src/common.h:168:16: note: ‘ObjFunc’ declared here 168 | typedef Obj (* ObjFunc) (/*arguments*/); | ^~~~~~~ src/bool.c:418:28: error: passing argument 3 of ‘SET_HDLR_FUNC’ from incompatible pointer type [-Wincompatible-pointer-types] 418 | SET_HDLR_FUNC( tmp, 2, ReturnFail2); | ^~~~~~~~~~~ | | | struct OpaqueBag * (*)(struct OpaqueBag *, struct OpaqueBag *, struct OpaqueBag *) src/calls.h:173:59: note: expected ‘ObjFunc’ {aka ‘struct OpaqueBag * (*)(void)’} but argument is of type ‘struct OpaqueBag * (*)(struct OpaqueBag *, struct OpaqueBag *, struct OpaqueBag *)’ 173 | EXPORT_INLINE void SET_HDLR_FUNC(Obj func, Int i, ObjFunc hdlr) | ~~~~~~~~^~~~ src/bool.c:246:12: note: ‘ReturnFail2’ declared here 246 | static Obj ReturnFail2(Obj self, Obj val1, Obj val2) | ^~~~~~~~~~~ src/common.h:168:16: note: ‘ObjFunc’ declared here 168 | typedef Obj (* ObjFunc) (/*arguments*/); | ^~~~~~~ src/bool.c:419:28: error: passing argument 3 of ‘SET_HDLR_FUNC’ from incompatible pointer type [-Wincompatible-pointer-types] 419 | SET_HDLR_FUNC( tmp, 3, ReturnFail3); | ^~~~~~~~~~~ | | | struct OpaqueBag * (*)(struct OpaqueBag *, struct OpaqueBag *, struct OpaqueBag *, struct OpaqueBag *) src/calls.h:173:59: note: expected ‘ObjFunc’ {aka ‘struct OpaqueBag * (*)(void)’} but argument is of type ‘struct OpaqueBag * (*)(struct OpaqueBag *, struct OpaqueBag *, struct OpaqueBag *, struct OpaqueBag *)’ 173 | EXPORT_INLINE void SET_HDLR_FUNC(Obj func, Int i, ObjFunc hdlr) | ~~~~~~~~^~~~ src/bool.c:256:12: note: ‘ReturnFail3’ declared here 256 | static Obj ReturnFail3(Obj self, Obj val1, Obj val2, Obj val3) | ^~~~~~~~~~~ src/common.h:168:16: note: ‘ObjFunc’ declared here 168 | typedef Obj (* ObjFunc) (/*arguments*/); | ^~~~~~~ make[1]: *** [Makefile.rules:426: build/obj/src/bool.c.o] Error 1 make[1]: Leaving directory '/build/reproducible-path/gap-4.14.0' make: *** [debian/rules:64: build-arch-stamp] Error 2 dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2