Hi, devil 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/devil_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. [...] make[1]: Entering directory '/build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/obj-aarch64-linux-gnu' /usr/bin/cmake -S/build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/DevIL -B/build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/obj-aarch64-linux-gnu --check-build-system CMakeFiles/Makefile.cmake 0 make -f CMakeFiles/Makefile2 preinstall make[2]: Entering directory '/build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/obj-aarch64-linux-gnu' make[2]: Nothing to be done for 'preinstall'. make[2]: Leaving directory '/build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/obj-aarch64-linux-gnu' Install the project... /usr/bin/cmake -P cmake_install.cmake -- Install configuration: "None" -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/libIL.so.1.1.1 -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/libIL.so.1 -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/libIL.so -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/include/IL/il.h -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/pkgconfig/IL.pc -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/libILU.so.1.1.1 -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/libILU.so.1 -- Set non-toolchain portion of runtime path of "/build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/libILU.so.1.1.1" to "" -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/libILU.so -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/include/IL/ilu.h -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/pkgconfig/ILU.pc -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/libILUT.so.1.1.1 -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/libILUT.so.1 -- Set non-toolchain portion of runtime path of "/build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/libILUT.so.1.1.1" to "" -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/libILUT.so -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/include/IL/ilut.h -- Installing: /build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/debian/tmp/usr/lib/pkgconfig/ILUT.pc make[1]: Leaving directory '/build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg/obj-aarch64-linux-gnu' dh_install -O--sourcedirectory=DevIL -O--buildsystem=cmake dh_installdocs -O--sourcedirectory=DevIL -O--buildsystem=cmake debian/rules execute_after_dh_installdocs make[1]: Entering directory '/build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg' rm -fv debian/libdevil-dev/usr/share/doc/libdevil-dev/DevIL-docs/.cvsignore removed 'debian/libdevil-dev/usr/share/doc/libdevil-dev/DevIL-docs/.cvsignore' make[1]: Leaving directory '/build/reproducible-path/devil-1.8.0.40.g6f3d5e9b+dfsg' dh_installchangelogs -O--sourcedirectory=DevIL -O--buildsystem=cmake dh_installexamples -O--sourcedirectory=DevIL -O--buildsystem=cmake dh_installsystemduser -O--sourcedirectory=DevIL -O--buildsystem=cmake dh_lintian -O--sourcedirectory=DevIL -O--buildsystem=cmake dh_perl -O--sourcedirectory=DevIL -O--buildsystem=cmake dh_link -O--sourcedirectory=DevIL -O--buildsystem=cmake dh_strip_nondeterminism -O--sourcedirectory=DevIL -O--buildsystem=cmake dh_compress -O--sourcedirectory=DevIL -O--buildsystem=cmake dh_fixperms -O--sourcedirectory=DevIL -O--buildsystem=cmake dh_missing -O--sourcedirectory=DevIL -O--buildsystem=cmake dh_dwz -a -O--sourcedirectory=DevIL -O--buildsystem=cmake dwz: debian/libdevil1c2/usr/lib/aarch64-linux-gnu/libIL.so.1.1.1: DWARF compression not beneficial - old size 620151 new size 624612 dh_strip -a -O--sourcedirectory=DevIL -O--buildsystem=cmake dh_makeshlibs -a -O--sourcedirectory=DevIL -O--buildsystem=cmake dpkg-gensymbols: warning: some new symbols appeared in the symbols file: see diff output below dpkg-gensymbols: error: some symbols or patterns disappeared in the symbols file: see diff output below dpkg-gensymbols: warning: debian/libdevil1c2/DEBIAN/symbols does not match completely debian/libdevil1c2.symbols --- debian/libdevil1c2.symbols (libdevil1c2_1.8.0.40.g6f3d5e9b+dfsg-4_arm64) +++ dpkg-gensymbolsg_1Rve 2026-03-18 14:37:52.690549376 +0000 @@ -641,10 +641,11 @@ _ZN7rg_etc117unpack_etc1_blockEPKvPjb@Base 1.8.0.40.g6f3d5e9b+dfsg _ZN7rg_etc119indirect_radix_sortIjtEEPT_jS2_S2_PKT0_jjb@Base 1.8.0.40.g6f3d5e9b+dfsg _ZN7rg_etc120pack_etc1_block_initEv@Base 1.8.0.40.g6f3d5e9b+dfsg - (subst)_ZNSt6vectorI10UTXPALETTESaIS0_EE17_M_default_appendE{size_t}@Base 1.8.0.40.g6f3d5e9b+dfsg +#MISSING: 1.8.0.40.g6f3d5e9b+dfsg-4# (subst)_ZNSt6vectorI10UTXPALETTESaIS0_EE17_M_default_appendE{size_t}@Base 1.8.0.40.g6f3d5e9b+dfsg + _ZNSt6vectorI10UTXPALETTESaIS0_EE6resizeEm@Base 1.8.0.40.g6f3d5e9b+dfsg-4 (subst)_ZNSt6vectorI12UTXENTRYNAMESaIS0_EE17_M_default_appendE{size_t}@Base 1.7.8 - (subst)_ZNSt6vectorI14UTXEXPORTTABLESaIS0_EE17_M_default_appendE{size_t}@Base 1.7.8 - (subst)_ZNSt6vectorI14UTXIMPORTTABLESaIS0_EE17_M_default_appendE{size_t}@Base 1.7.8 +#MISSING: 1.8.0.40.g6f3d5e9b+dfsg-4# (subst)_ZNSt6vectorI14UTXEXPORTTABLESaIS0_EE17_M_default_appendE{size_t}@Base 1.7.8 +#MISSING: 1.8.0.40.g6f3d5e9b+dfsg-4# (subst)_ZNSt6vectorI14UTXIMPORTTABLESaIS0_EE17_M_default_appendE{size_t}@Base 1.7.8 _ZZN7rg_etc114etc1_optimizer6params22clear_optimizer_paramsEvE20s_default_scan_delta@Base 1.8.0.40.g6f3d5e9b+dfsg _ilLoadExt@Base 1.7.8 _ilSaveExt@Base 1.7.8 dh_makeshlibs: error: failing due to earlier errors make: *** [debian/rules:9: binary] Error 25 dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2