Fails to build:

cd /home/gerry/dev/projects/mir/miral/miral/BUILD/test && /usr/lib/ccache/c++    -I/home/gerry/dev/projects/mir/miral/miral/include -isystem /usr/include/mirclient -isystem /usr/include/mircommon -isystem /usr/include/mircookie -I/usr/include/mirtest -I/usr/include/mirserver -I/usr/include/mirplatform -I/usr/src/googletest/googletest/include -I/usr/src/googletest/googlemock/include  -Wno-mismatched-tags -pthread -g -Werror -Wall -pedantic -Wextra -fPIC -Wnon-virtual-dtor -std=c++14 -Wno-mismatched-tags -Wno-inconsistent-missing-override -Wno-return-type-c-linkage   -o CMakeFiles/miral-test.dir/drag_active_window.cpp.o -c /home/gerry/dev/projects/mir/miral/miral/test/drag_active_window.cpp
/home/gerry/dev/projects/mir/miral/miral/test/drag_active_window.cpp:125:2: error: ISO C++11 requires at least one argument for the "..." in a variadic ma




Succeeds to build:
cd /home/gerry/dev/projects/qtmir/gmock-fixes/BUILD/tests/mirserver/WindowManager && /usr/lib/ccache/c++   -DMIR_REQUIRE_DEPRECATED_EVENT_OPT_IN=1 -DQT_CORE_LIB -DQT_DBUS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_NO_DEBUG -DQT_NO_KEYWORDS -DQT_QML_LIB -DQT_QUICK_LIB -DQT_SENSORS_LIB -DQT_TESTCASE_BUILDDIR=\"/home/gerry/dev/projects/qtmir/gmock-fixes/BUILD\" -DQT_TESTLIB_LIB -DQT_USE_QSTRINGBUILDER -DQT_USING_GL -I/home/gerry/dev/projects/qtmir/gmock-fixes/BUILD/tests/mirserver/WindowManager -I/home/gerry/dev/projects/qtmir/gmock-fixes/tests/mirserver/WindowManager -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore -isystem /usr/include/x86_64-linux-gnu/qt5 -I/home/gerry/dev/projects/qtmir/gmock-fixes/src/platforms/mirserver -isystem /usr/include/mirserver -isystem /usr/include/mirclient -isystem /usr/include/mircommon -isystem /usr/include/mircookie -isystem /usr/include/mirplatform -isystem /usr/include/x86_64-linux-gnu/qt5/QtTest -isystem /usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++-64 -isystem /usr/include/x86_64-linux-gnu/qt5/QtDBus -isystem /usr/include/x86_64-linux-gnu/qt5/QtQuick -isystem /usr/include/x86_64-linux-gnu/qt5/QtQml -isystem /usr/include/x86_64-linux-gnu/qt5/QtNetwork -isystem /usr/include/x86_64-linux-gnu/qt5/QtGui -isystem /usr/include/x86_64-linux-gnu/qt5/QtSensors -I/usr/src/googletest/googletest/include -I/usr/src/googletest/googlemock/include  -std=c++14 -fPIC -Wall -fno-strict-aliasing -Werror -Wextra -O2 -g -DNDEBUG   -fPIC -o CMakeFiles/WindowManagerTest.dir/window_manager.cpp.o -c /home/gerry/dev/projects/qtmir/gmock-fixes/tests/mirserver/WindowManager/window_manager.cpp