Hi, garli fails to build in a test rebuild on at least amd64 and arm64 with gcc-16/g++-16, but builds properly with gcc-15/g++-15. The severity of this report will be raised before the forky release. The full build log can be found at: https://people.debian.org/~ema/gcc-16-rebuilds/output-1/garli_arm64.build.xz The last lines of the build log are at the end of this report. To build with GCC 16, either set CC=gcc-16 CXX=g++-16 explicitly, or install the gcc, g++, gfortran, ... packages from experimental. apt-get -t=experimental install g++ Common build failures include unused (but set) variables, array subscripts partly outside array bounds, and new/dropped symbols in Debian symbols files. For other C/C++ related build failures see the porting guide at http://gcc.gnu.org/gcc-16/porting_to.html Please only close this issue after double-checking that the package can be built correctly with GCC 16. Please do not reassign this bug to another package. If a fix in another package is required, then file a bug for the other package (or clone), and mark this bug as blocked by the bug in the other package. [...] 32 | __va_arg_pack ()); | ~~~~~~~~~~~~~~~~~ /usr/include/aarch64-linux-gnu/bits/stdio2.h:30:34: note: in a call to built-in function ‘int __builtin_sprintf(char*, const char*, ...)’ /usr/include/aarch64-linux-gnu/bits/stdio2.h:30:34: warning: null destination pointer [-Wformat-overflow=] In file included from /usr/include/stdio.h:970, from /usr/include/c++/16/cstdio:47, from /usr/include/ncl/ncl.h:27, from garlireader.cpp:41: In function ‘int sprintf(char*, const char*, ...)’, inlined from ‘ErrorException::ErrorException(const char*, ...)’ at errorexception.h:97:12: /usr/include/aarch64-linux-gnu/bits/stdio2.h:30:34: warning: argument 1 null where non-null expected [-Wnonnull] 30 | return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, | ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 31 | __glibc_objsize (__s), __fmt, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 32 | __va_arg_pack ()); | ~~~~~~~~~~~~~~~~~ /usr/include/aarch64-linux-gnu/bits/stdio2.h:30:34: note: in a call to built-in function ‘int __builtin_sprintf(char*, const char*, ...)’ /usr/include/aarch64-linux-gnu/bits/stdio2.h:30:34: warning: null destination pointer [-Wformat-overflow=] In file included from /usr/include/stdio.h:970, from /usr/include/c++/16/cstdio:47, from /usr/include/c++/16/ext/string_conversions.h:47, from /usr/include/c++/16/bits/basic_string.h:4499, from /usr/include/c++/16/string:58, from /usr/include/c++/16/bits/locale_classes.h:43, from /usr/include/c++/16/bits/ios_base.h:43, from /usr/include/c++/16/ios:46, from /usr/include/c++/16/bits/ostream.h:43, from /usr/include/c++/16/ostream:42, from /usr/include/c++/16/iostream:43, from datamatr.cpp:20: In function ‘int sprintf(char*, const char*, ...)’, inlined from ‘ErrorException::ErrorException(const char*, ...)’ at errorexception.h:97:12: /usr/include/aarch64-linux-gnu/bits/stdio2.h:30:34: warning: argument 1 null where non-null expected [-Wnonnull] 30 | return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, | ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 31 | __glibc_objsize (__s), __fmt, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 32 | __va_arg_pack ()); | ~~~~~~~~~~~~~~~~~ /usr/include/aarch64-linux-gnu/bits/stdio2.h:30:34: note: in a call to built-in function ‘int __builtin_sprintf(char*, const char*, ...)’ /usr/include/aarch64-linux-gnu/bits/stdio2.h:30:34: warning: null destination pointer [-Wformat-overflow=] In file included from /usr/include/stdio.h:970, from /usr/include/c++/16/cstdio:47, from /usr/include/c++/16/ext/string_conversions.h:47, from /usr/include/c++/16/bits/basic_string.h:4499, from /usr/include/c++/16/string:58, from datamatr.h:23, from sequencedata.h:27, from sequencedata.cpp:21: In function ‘int sprintf(char*, const char*, ...)’, inlined from ‘ErrorException::ErrorException(const char*, ...)’ at errorexception.h:97:12: /usr/include/aarch64-linux-gnu/bits/stdio2.h:30:34: warning: argument 1 null where non-null expected [-Wnonnull] 30 | return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1, | ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 31 | __glibc_objsize (__s), __fmt, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 32 | __va_arg_pack ()); | ~~~~~~~~~~~~~~~~~ /usr/include/aarch64-linux-gnu/bits/stdio2.h:30:34: note: in a call to built-in function ‘int __builtin_sprintf(char*, const char*, ...)’ /usr/include/aarch64-linux-gnu/bits/stdio2.h:30:34: warning: null destination pointer [-Wformat-overflow=] make[4]: Leaving directory '/build/reproducible-path/garli-2.1/src' make[3]: *** [Makefile:402: all-recursive] Error 1 make[3]: Leaving directory '/build/reproducible-path/garli-2.1' make[2]: *** [Makefile:343: all] Error 2 make[2]: Leaving directory '/build/reproducible-path/garli-2.1' dh_auto_build: error: make -j128 returned exit code 2 make[1]: *** [debian/rules:13: override_dh_auto_configure] Error 25 make[1]: Leaving directory '/build/reproducible-path/garli-2.1' make: *** [debian/rules:8: binary] Error 2 dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2