[pkg-gnupg-maint] Bug#1096756: gpgme1.0: ftbfs with GCC-15

[Matthias Klose]

Package: src:gpgme1.0
Version: 1.24.1-4
Severity: important
Tags: sid forky
User: debian-gcc at 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/gpgme1.0_1.24.1-4_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

[...]
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmeaddexistingsubkeyjob.o:(.rodata+0xac): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmebackend.o:(.rodata+0x30): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmechangeexpiryjob.o:(.rodata+0xe4): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmechangeownertrustjob.o:(.rodata+0xa8): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmechangepasswdjob.o:(.rodata+0xa4): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmedecryptjob.o:(.rodata+0xa0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmedecryptverifyarchivejob.o:(.rodata+0x36c): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmedecryptverifyjob.o:(.rodata+0x348): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmedeletejob.o:(.rodata+0xa0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmedownloadjob.o:(.rodata+0xa0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmeencryptarchivejob.o:(.rodata+0x368): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmeencryptjob.o:(.rodata+0x340): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmeexportjob.o:(.rodata+0xa0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmeimportfromkeyserverjob.o:(.rodata+0xac): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmeimportjob.o:(.rodata+0xe0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmekeygenerationjob.o:(.rodata+0xa8): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmekeylistjob.o:(.rodata+0xa0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-listallkeysjob.o:(.rodata+0x0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmelistallkeysjob.o:(.rodata+0xe4): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmenewcryptoconfig.o:(.rodata+0x110): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmereceivekeysjob.o:(.rodata+0xa4): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmerefreshsmimekeysjob.o:(.rodata+0x268): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmerevokekeyjob.o:(.rodata+0xa4): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmesetprimaryuseridjob.o:(.rodata+0x308): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmesignarchivejob.o:(.rodata+0x344): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmesignencryptjob.o:(.rodata+0x344): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmesignencryptarchivejob.o:(.rodata+0x36c): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmesignjob.o:(.rodata+0x31c): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmesignkeyjob.o:(.rodata+0x580): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmeverifydetachedjob.o:(.rodata+0x368): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmeverifyopaquejob.o:(.rodata+0x344): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmewkdlookupjob.o:(.rodata+0xa4): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-threadedjobmixin.o:(.rodata+0x0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmewkdrefreshjob.o:(.rodata+0x344): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmekeyformailboxjob.o:(.rodata+0xa8): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgme_debug.o:(.rodata+0x0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmetofupolicyjob.o:(.rodata+0xa4): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmequickjob.o:(.rodata+0x380): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-defaultkeygenerationjob.o:(.rodata+0x16c): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmewkspublishjob.o:(.rodata+0xa4): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-qgpgmegpgcardjob.o:(.rodata+0xa0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-changeexpiryjob.o:(.rodata+0x0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-encryptjob.o:(.rodata+0x188): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-importjob.o:(.rodata+0x0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-quickjob.o:(.rodata+0x144): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-signarchivejob.o:(.rodata+0x220): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-signencryptjob.o:(.rodata+0x1f8): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-signencryptarchivejob.o:(.rodata+0x294): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-signjob.o:(.rodata+0x184): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-cryptoconfig.o:(.rodata+0x0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-util.o:(.rodata+0x0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-verifydetachedjob.o:(.rodata+0x160): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-verifyopaquejob.o:(.rodata+0x190): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
/usr/bin/ld: .libs/libqgpgmeqt6_la-wkdrefreshjob.o:(.rodata+0x60): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; .libs/libqgpgmeqt6_la-cleaner.o:(.rodata+0x50): first defined here
collect2: error: ld returned 1 exit status
make[6]: *** [Makefile:1392: libqgpgmeqt6.la] Error 1
make[6]: Leaving directory '/build/reproducible-path/gpgme1.0-1.24.1/build/lang/qt/src'
make[5]: *** [Makefile:1307: all] Error 2
make[5]: Leaving directory '/build/reproducible-path/gpgme1.0-1.24.1/build/lang/qt/src'
make[4]: *** [Makefile:483: all-recursive] Error 1
make[4]: Leaving directory '/build/reproducible-path/gpgme1.0-1.24.1/build/lang/qt'
make[3]: *** [Makefile:480: all-recursive] Error 1
make[3]: Leaving directory '/build/reproducible-path/gpgme1.0-1.24.1/build/lang'
make[2]: *** [Makefile:564: all-recursive] Error 1
make[2]: Leaving directory '/build/reproducible-path/gpgme1.0-1.24.1/build'
make[1]: *** [Makefile:496: all] Error 2
make[1]: Leaving directory '/build/reproducible-path/gpgme1.0-1.24.1/build'
dh_auto_build: error: cd build && make -j8 returned exit code 2
make: *** [debian/rules:15: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2