Hi,

condor 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/condor_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[4]: Leaving directory '/build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu'
[ 38%] Built target blahpd_daemon
[ 38%] Linking CXX executable classad_version
cd /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu/src/classad && /usr/bin/cmake -E cmake_link_script CMakeFiles/classad_version.dir/link.txt --verbose=1
/usr/bin/c++ -g -O2 -ffile-prefix-map=/build/reproducible-path/condor-25.7.2+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/condor-25.7.2+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -O2 -g3 -DNDEBUG -Wl,-z,relro -Wl,-z,now -fopenmp -rdynamic -Wl,--warn-once -Wl,--warn-common -Wl,--enable-new-dtags -pthread -Wl,--dependency-file=CMakeFiles/classad_version.dir/link.d CMakeFiles/classad_version.dir/classad_version.cpp.o -o classad_version  libclassad.so.25.7.2 /usr/lib/aarch64-linux-gnu/libpcre2-8.so -ldl
make[4]: Leaving directory '/build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu'
[ 38%] Built target classad_version
[ 38%] Linking CXX static library libfmt.a
cd /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu/src/vendor/fmt-10.1.0 && /usr/bin/cmake -P CMakeFiles/fmt.dir/cmake_clean_target.cmake
cd /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu/src/vendor/fmt-10.1.0 && /usr/bin/cmake -E cmake_link_script CMakeFiles/fmt.dir/link.txt --verbose=1
[ 38%] Linking CXX executable condor_gpu_discovery
cd /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu/src/gpu && /usr/bin/cmake -E cmake_link_script CMakeFiles/condor_gpu_discovery.dir/link.txt --verbose=1
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/usr/bin/c++ -g -O2 -ffile-prefix-map=/build/reproducible-path/condor-25.7.2+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/condor-25.7.2+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -O2 -g3 -DNDEBUG -Wl,-z,relro -Wl,-z,now -fopenmp -rdynamic -Wl,--warn-once -Wl,--warn-common -Wl,--enable-new-dtags -pthread -Wl,--dependency-file=CMakeFiles/condor_gpu_discovery.dir/link.d CMakeFiles/condor_gpu_discovery.dir/condor_gpu_discovery.cpp.o CMakeFiles/condor_gpu_discovery.dir/cuda_device_enumeration.cpp.o CMakeFiles/condor_gpu_discovery.dir/opencl_device_enumeration.cpp.o CMakeFiles/condor_gpu_discovery.dir/hip_device_enumeration.cpp.o CMakeFiles/condor_gpu_discovery.dir/simulated_device_enumeration.cpp.o CMakeFiles/condor_gpu_discovery.dir/print_error.cpp.o -o condor_gpu_discovery  ../condor_utils/libcondor_version_obj.a -ldl
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[ 38%] Linking CXX executable ../condor_tests/queryAPI-sim
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[ 38%] Built target queryAPI-sim
make  -f src/condor_tests/CMakeFiles/job_ec2_basic.dir/build.make src/condor_tests/CMakeFiles/job_ec2_basic.dir/depend
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cd /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /build/reproducible-path/condor-25.7.2+dfsg /build/reproducible-path/condor-25.7.2+dfsg/src/condor_tests /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu/src/condor_tests /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu/src/condor_tests/CMakeFiles/job_ec2_basic.dir/DependInfo.cmake "--color=" job_ec2_basic
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[ 38%] Built target job_ec2_basic
[ 39%] Linking CXX executable classad_functional_tester
cd /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu/src/classad && /usr/bin/cmake -E cmake_link_script CMakeFiles/classad_functional_tester.dir/link.txt --verbose=1
/usr/bin/c++ -g -O2 -ffile-prefix-map=/build/reproducible-path/condor-25.7.2+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/condor-25.7.2+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -O2 -g3 -DNDEBUG -Wl,-z,relro -Wl,-z,now -fopenmp -rdynamic -Wl,--warn-once -Wl,--warn-common -Wl,--enable-new-dtags -pthread -Wl,--dependency-file=CMakeFiles/classad_functional_tester.dir/link.d CMakeFiles/classad_functional_tester.dir/classad_functional_tester.cpp.o -o classad_functional_tester  libclassad.so.25.7.2 /usr/lib/aarch64-linux-gnu/libpcre2-8.so -ldl
make[4]: Leaving directory '/build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu'
[ 39%] Built target classad_functional_tester
[ 39%] Linking CXX executable ../condor_tests/_test_classad_parse
cd /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu/src/classad && /usr/bin/cmake -E cmake_link_script CMakeFiles/_test_classad_parse.dir/link.txt --verbose=1
/usr/bin/c++ -g -O2 -ffile-prefix-map=/build/reproducible-path/condor-25.7.2+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/condor-25.7.2+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -O2 -g3 -DNDEBUG -Wl,-z,relro -Wl,-z,now -fopenmp -rdynamic -Wl,--warn-once -Wl,--warn-common -Wl,--enable-new-dtags -pthread -Wl,--dependency-file=CMakeFiles/_test_classad_parse.dir/link.d CMakeFiles/_test_classad_parse.dir/test_classad_parse.cpp.o -o ../condor_tests/_test_classad_parse  libclassad.so.25.7.2 ../condor_utils/libcondor_version_obj.a /usr/lib/aarch64-linux-gnu/libpcre2-8.so -ldl
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[ 39%] Built target _test_classad_parse
[ 39%] Linking CXX executable ../condor_tests/classad_unit_tester
cd /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu/src/classad && /usr/bin/cmake -E cmake_link_script CMakeFiles/classad_unit_tester.dir/link.txt --verbose=1
/usr/bin/c++ -g -O2 -ffile-prefix-map=/build/reproducible-path/condor-25.7.2+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/condor-25.7.2+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -Wdate-time -D_FORTIFY_SOURCE=2 -O2 -g3 -DNDEBUG -Wl,-z,relro -Wl,-z,now -fopenmp -rdynamic -Wl,--warn-once -Wl,--warn-common -Wl,--enable-new-dtags -pthread -Wl,--dependency-file=CMakeFiles/classad_unit_tester.dir/link.d CMakeFiles/classad_unit_tester.dir/classad_unit_tester.cpp.o -o ../condor_tests/classad_unit_tester  libclassad.so.25.7.2 ../condor_utils/libcondor_version_obj.a /usr/lib/aarch64-linux-gnu/libpcre2-8.so -ldl
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make[4]: Entering directory '/build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu'
cd /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /build/reproducible-path/condor-25.7.2+dfsg /build/reproducible-path/condor-25.7.2+dfsg/src/condor_tests /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu/src/condor_tests /build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu/src/condor_tests/CMakeFiles/classad_unit_test.dir/DependInfo.cmake "--color=" classad_unit_test
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[ 39%] Built target condor_api_and_utils_objects
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[ 39%] Built target condor_extra_objects
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make[3]: *** [CMakeFiles/Makefile2:26646: src/condor_utils/CMakeFiles/condor_utils_objects.dir/all] Error 2
make[3]: Leaving directory '/build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu'
make[2]: *** [Makefile:166: all] Error 2
make[2]: Leaving directory '/build/reproducible-path/condor-25.7.2+dfsg/obj-aarch64-linux-gnu'
dh_auto_build: error: cd obj-aarch64-linux-gnu && make -j128 INSTALL="install --strip-program=true" VERBOSE=1 returned exit code 2
make[1]: *** [debian/rules:33: override_dh_auto_build] Error 25
make[1]: Leaving directory '/build/reproducible-path/condor-25.7.2+dfsg'
make: *** [debian/rules:19: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2

Hello,

The build issues with gcc 16 were resolved upstream today. We will pick
up these fixes in the May 2026 release (HTCondor 25.10.0)

...Tim

We believe that the bug you reported is fixed in the latest version of
condor, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1133446@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Tim Theisen <tim@cs.wisc.edu> (supplier of updated condor package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Tue, 12 May 2026 12:55:00 -0500
Source: condor
Architecture: source
Version: 25.10.1+dfsg-1
Distribution: unstable
Urgency: medium
Maintainer: Debian HPC Team <debian-hpc@lists.debian.org>
Changed-By: Tim Theisen <tim@cs.wisc.edu>
Closes: 1133446
Changes:
 condor (25.10.1+dfsg-1) unstable; urgency=medium
 .
   * Several improvements to throttle and monitor DAGMan resource usage
   * Can now automatically retry a job with a larger disk request
   * .chirp.config has been moved out of the job's scratch directory
   * Disables swap for jobs on cgroup v1 systems by default
   * Can now append columns to condor_(qusers|status|who) output
   * Allow URL style container images when file transfer is off
   * Improvements to handling batch universe jobs
   * Fixed Access Point spooled X.509 job proxy refresh
   * Fix reporting of RemoteUserCPU in parallel universe
   * condor_ssh_to_job can now execute one-shot commands when using containers
   * condor_ssh_to_job now enters the proper cgroup when using containers
   * Fixed Access Point spooled X.509 job proxy refresh
   * Fix reporting of RemoteUserCPU in parallel universe
   * condor_ssh_to_job can now execute one-shot commands when using containers
   * condor_ssh_to_job now enters the proper cgroup when using containers
   * Now builds using gcc 16 (Closes: #1133446)
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 cf8adf6f2384668ebef0df5f8d18384a952c703a 30428 condor_25.10.1+dfsg-1.debian.tar.xz
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Checksums-Sha256:
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Files:
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