fatal warning: parseLocationOrError returning a dangling reference to a temporary

FAILED: qtbase/src/tools/qtpaths/CMakeFiles/qtpaths.dir/qtpaths.cpp.o 
/usr/lib/ccache/bin/c++ -DPROEVALUATOR_FULL -DQMAKE_VERSION_STR=\"3.1\" -DQTPATHS_VERSION_STR=\"2.0\" -DQT_BUILD_QMAKE -DQT_CORE_LIB -DQT_DISABLE_DEPRECATED_UP_TO=0x050000 -DQT_EXPLICIT_QFILE_CONSTRUCTION_FROM_PATH -DQT_HOST_DATADIR=\".\" -DQT_HOST_MKSPEC=\"linux-g++\" -DQT_LEAN_HEADERS=1 -DQT_NO_AS_CONST=1 -DQT_NO_EXCEPTIONS -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_STRICT_QLIST_ITERATORS -DQT_TARGET_MKSPEC=\"linux-g++\" -DQT_USE_QSTRINGBUILDER -DQT_WARN_DEPRECATED_UP_TO=0x070000 -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I/home/rutledge/dev/qt-lts-dbg/qtbase/src/tools/qtpaths/qtpaths_autogen/include -I/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths -I/home/rutledge/dev/qt-lts-dbg/qtbase/src/tools/qtpaths -I/home/rutledge/dev/qt-lts-dbg/qtbase/mkspecs/linux-g++ -I/home/rutledge/dev/qt-lts-dbg/qtbase/include -I/home/rutledge/dev/qt-lts-dbg/qtbase/include/QtCore -I/home/rutledge/dev/qt-lts/qtbase/qmake -I/home/rutledge/dev/qt-lts/qtbase/qmake/library -I/home/rutledge/dev/qt-lts-dbg/qtbase/src/corelib -I/home/rutledge/dev/qt-lts-dbg/qtbase/include/QtCore/6.5.9 -I/home/rutledge/dev/qt-lts-dbg/qtbase/include/QtCore/6.5.9/QtCore -g -std=c++17 -fPIE -fvisibility=hidden -fvisibility-inlines-hidden -Wall -Wextra -fno-exceptions -Werror -Wno-error=cpp -Wno-error=deprecated-declarations -Wno-error=strict-overflow -Wno-error=implicit-fallthrough -Wno-error=deprecated-copy -Wno-error=redundant-move -Wno-error=init-list-lifetime -Wno-error=format-overflow -Wno-error=stringop-overflow -Wno-error=deprecated-enum-enum-conversion -Wno-error=deprecated-enum-float-conversion -Wsuggest-override -fPIC -MD -MT qtbase/src/tools/qtpaths/CMakeFiles/qtpaths.dir/qtpaths.cpp.o -MF qtbase/src/tools/qtpaths/CMakeFiles/qtpaths.dir/qtpaths.cpp.o.d -o qtbase/src/tools/qtpaths/CMakeFiles/qtpaths.dir/qtpaths.cpp.o -c /home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp: In function ‘int main(int, char**)’:
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:260:27: error: possibly dangling reference to a temporary [-Werror=dangling-reference]
  260 |         const StringEnum &location = parseLocationOrError(parser.value(display));
      |                           ^~~~~~~~
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:260:71: note: ‘QString’ temporary created here
  260 |         const StringEnum &location = parseLocationOrError(parser.value(display));
      |                                                           ~~~~~~~~~~~~^~~~~~~~~
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:266:27: error: possibly dangling reference to a temporary [-Werror=dangling-reference]
  266 |         const StringEnum &location = parseLocationOrError(parser.value(paths));
      |                           ^~~~~~~~
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:266:71: note: ‘QString’ temporary created here
  266 |         const StringEnum &location = parseLocationOrError(parser.value(paths));
      |                                                           ~~~~~~~~~~~~^~~~~~~
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:272:27: error: possibly dangling reference to a temporary [-Werror=dangling-reference]
  272 |         const StringEnum &location = parseLocationOrError(parser.value(writablePath));
      |                           ^~~~~~~~
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:272:71: note: ‘QString’ temporary created here
  272 |         const StringEnum &location = parseLocationOrError(parser.value(writablePath));
      |                                                           ~~~~~~~~~~~~^~~~~~~~~~~~~~
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:284:27: error: possibly dangling reference to a temporary [-Werror=dangling-reference]
  284 |         const StringEnum &location = parseLocationOrError(parser.value(locateDir));
      |                           ^~~~~~~~
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:284:71: note: ‘QString’ temporary created here
  284 |         const StringEnum &location = parseLocationOrError(parser.value(locateDir));
      |                                                           ~~~~~~~~~~~~^~~~~~~~~~~
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:291:27: error: possibly dangling reference to a temporary [-Werror=dangling-reference]
  291 |         const StringEnum &location = parseLocationOrError(parser.value(locateFile));
      |                           ^~~~~~~~
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:291:71: note: ‘QString’ temporary created here
  291 |         const StringEnum &location = parseLocationOrError(parser.value(locateFile));
      |                                                           ~~~~~~~~~~~~^~~~~~~~~~~~
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:298:27: error: possibly dangling reference to a temporary [-Werror=dangling-reference]
  298 |         const StringEnum &location = parseLocationOrError(parser.value(locateDirs));
      |                           ^~~~~~~~
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:298:71: note: ‘QString’ temporary created here
  298 |         const StringEnum &location = parseLocationOrError(parser.value(locateDirs));
      |                                                           ~~~~~~~~~~~~^~~~~~~~~~~~
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:305:27: error: possibly dangling reference to a temporary [-Werror=dangling-reference]
  305 |         const StringEnum &location = parseLocationOrError(parser.value(locateFiles));
      |                           ^~~~~~~~
/home/rutledge/dev/qt-lts/qtbase/src/tools/qtpaths/qtpaths.cpp:305:71: note: ‘QString’ temporary created here
  305 |         const StringEnum &location = parseLocationOrError(parser.value(locateFiles));
      |                                                           ~~~~~~~~~~~~^~~~~~~~~~~~~
cc1plus: all warnings being treated as errors