Package: src:futuresql
Version: 0.1.1-2
Severity: important
Tags: sid forky
User: debian-...@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/futuresql_0.1.1-2_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

[...]
    FETCHCONTENT_FULLY_DISCONNECTED


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[ 12%] Automatic MOC for target futuresql6
cd /build/reproducible-path/futuresql-0.1.1/obj-x86_64-linux-gnu/src && 
/usr/bin/cmake -E cmake_autogen 
/build/reproducible-path/futuresql-0.1.1/obj-x86_64-linux-gnu/src/CMakeFiles/futuresql6_autogen.dir/AutogenInfo.json
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AutoGen: Refreshing parse cache because it doesn't exist.
AutoMoc: Generating 
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/usr/bin/c++ -std=gnu++20 -dM -E -c 
/usr/share/cmake-3.31/Modules/CMakeCXXCompilerABI.cpp 
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-D_LARGEFILE64_SOURCE -Dfuturesql6_EXPORTS 
-I/build/reproducible-path/futuresql-0.1.1/obj-x86_64-linux-gnu/src 
-I/build/reproducible-path/futuresql-0.1.1/src 
-I/usr/include/x86_64-linux-gnu/qt6/QtCore -I/usr/include/x86_64-linux-gnu/qt6 
-I/usr/lib/x86_64-linux-gnu/qt6/mkspecs/linux-g++ 
-I/usr/include/x86_64-linux-gnu/qt6/QtSql -I/usr/include/c++/15 
-I/usr/include/x86_64-linux-gnu/c++/15 -I/usr/include/c++/15/backward 
-I/usr/lib/gcc/x86_64-linux-gnu/15/include -I/usr/local/include 
-I/usr/include/x86_64-linux-gnu -I/usr/include
AutoGen: Parsing "SRC:/src/threadeddatabase.h"
AutoGen: Parsing "SRC:/src/threadeddatabase_p.h"
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/usr/lib/qt6/libexec/moc -DFUTURESQL_DEPRECATED_WARNINGS_SINCE=0x0 
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-D_LARGEFILE64_SOURCE -Dfuturesql6_EXPORTS 
-I/build/reproducible-path/futuresql-0.1.1/obj-x86_64-linux-gnu/src 
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/usr/bin/c++ -DFUTURESQL_DEPRECATED_WARNINGS_SINCE=0x0 
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-DQT_SQL_LIB -DQT_STRICT_ITERATORS -DQT_USE_QSTRINGBUILDER -D_GNU_SOURCE 
-D_LARGEFILE64_SOURCE -Dfuturesql6_EXPORTS 
-I/build/reproducible-path/futuresql-0.1.1/obj-x86_64-linux-gnu/src 
-I/build/reproducible-path/futuresql-0.1.1/src 
-I/build/reproducible-path/futuresql-0.1.1/obj-x86_64-linux-gnu/src/futuresql6_autogen/include
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/usr/include/x86_64-linux-gnu/qt6 -isystem 
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-fno-exceptions -Wall -Wextra -Wcast-align -Wchar-subscripts -Wformat-security 
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-Werror=return-type -Werror=init-self -Wvla -Wdate-time -Wsuggest-override 
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-std=gnu++20 -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -MD -MT 
src/CMakeFiles/futuresql6.dir/futuresql6_autogen/mocs_compilation.cpp.o -MF 
CMakeFiles/futuresql6.dir/futuresql6_autogen/mocs_compilation.cpp.o.d -o 
CMakeFiles/futuresql6.dir/futuresql6_autogen/mocs_compilation.cpp.o -c 
/build/reproducible-path/futuresql-0.1.1/obj-x86_64-linux-gnu/src/futuresql6_autogen/mocs_compilation.cpp
[ 50%] Linking CXX shared library ../bin/libfuturesql6.so
cd /build/reproducible-path/futuresql-0.1.1/obj-x86_64-linux-gnu/src && 
/usr/bin/cmake -E cmake_link_script CMakeFiles/futuresql6.dir/link.txt 
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/usr/bin/ld: CMakeFiles/futuresql6.dir/threadeddatabase.cpp.o (symbol from 
plugin): in function `asyncdatabase()':
(.text+0x0): multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/futuresql6.dir/futuresql6_autogen/mocs_compilation.cpp.o (symbol 
from plugin):(.text+0x0): first defined here
collect2: error: ld returned 1 exit status
/usr/bin/c++ -fPIC -g -O2 
-ffile-prefix-map=/build/reproducible-path/futuresql-0.1.1=. -flto=auto 
-ffat-lto-objects -fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2 
-fno-exceptions -Wall -Wextra -Wcast-align -Wchar-subscripts -Wformat-security 
-Wno-long-long -Wpointer-arith -Wundef -Wnon-virtual-dtor -Woverloaded-virtual 
-Werror=return-type -Werror=init-self -Wvla -Wdate-time -Wsuggest-override 
-Wlogical-op -pedantic -Wzero-as-null-pointer-constant -Wmissing-include-dirs 
-Wl,--no-undefined -Wl,--fatal-warnings -Wl,--enable-new-dtags -flto=auto 
-ffat-lto-objects -Wl,-z,relro -Wl,-z,now -shared 
-Wl,-soname,libfuturesql6.so.0 -o ../bin/libfuturesql6.so.0 
CMakeFiles/futuresql6.dir/futuresql6_autogen/mocs_compilation.cpp.o 
CMakeFiles/futuresql6.dir/threadeddatabase.cpp.o  
/usr/lib/x86_64-linux-gnu/libQt6Sql.so.6.7.2 
/usr/lib/x86_64-linux-gnu/libQt6Core.so.6.7.2
make[3]: *** [src/CMakeFiles/futuresql6.dir/build.make:119: 
bin/libfuturesql6.so.0] Error 1
make[3]: Leaving directory 
'/build/reproducible-path/futuresql-0.1.1/obj-x86_64-linux-gnu'
make[2]: *** [CMakeFiles/Makefile2:1127: src/CMakeFiles/futuresql6.dir/all] 
Error 2
make[2]: Leaving directory 
'/build/reproducible-path/futuresql-0.1.1/obj-x86_64-linux-gnu'
make[1]: *** [Makefile:149: all] Error 2
make[1]: Leaving directory 
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dh_auto_build: error: cd obj-x86_64-linux-gnu && make -j8 "INSTALL=install 
--strip-program=true" VERBOSE=1 returned exit code 2
make: *** [debian/rules:7: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2

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