[Bug c++/71092] [6/7 Regression] ICE: in cxx_eval_call_expression, at cp/constexpr.c:1449; only with -Os

["schoko.teddy at web dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71092

--- Comment #4 from schoko.teddy at web dot de ---
(In reply to schoko.teddy from comment #3)
> Created attachment 38494 [details]
> Preprocessed source
> 
> This Error occurs while compiling this motioncontrollayer.cpp file from a Qt
> project. Gzipped because of largeness.

Oh, and the console output (I tried different -O values, all crashing):

g++ -c -pipe -O2 -march=x86-64 -mtune=generic -O2 -pipe
-fstack-protector-strong -flto -std=gnu++0x -Wall -W -D_REENTRANT -fPIC
-DQT_USE_QSTRINGBUILDER -DQT_STRICT_ITERATORS -DPACKAGE_VERSION=3.1.0
-DPACKAGE_NAME=turag-console -DSIM -DSIMULATION -DTURAG_DEBUG_ENABLE_BINARY
-DQWT_DLL -DQT_NO_DEBUG -DQT_PRINTSUPPORT_LIB -DQT_MULTIMEDIAWIDGETS_LIB
-DQT_SVG_LIB -DQT_WIDGETS_LIB -DQT_MULTIMEDIA_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB
-DQT_SERIALPORT_LIB -DQT_XML_LIB -DQT_CORE_LIB -I../Console -I.
-Itina-platform/public -I../Console -I../../../libs
-I../../../libs/libsimeurobot/plugin -I../../Debug-Server -I../../Debug-Server
-I../../../src/common -I../../../tina -I../../../tina/platform/desktop/public
-isystem /usr/include/qwt -isystem /usr/include/qt -isystem
/usr/include/qt/QtPrintSupport -isystem /usr/include/qt/QtMultimediaWidgets
-isystem /usr/include/qt/QtSvg -isystem /usr/include/qt/QtWidgets -isystem
/usr/include/qt/QtMultimedia -isystem /usr/include/qt/QtGui -isystem
/usr/include/qt/QtNetwork -isystem /usr/include/qt/QtSerialPort -isystem
/usr/include/qt/QtXml -isystem /usr/include/qt/QtCore -I.
-I/usr/lib/qt/mkspecs/linux-g++ -o motioncontrollayer.o
../../../libs/libsimeurobot/vis/motioncontrollayer.cpp

In file included from ../../../libs/libsimeurobot/vis/motioncontrollayer.h:7:0,
                 from ../../../libs/libsimeurobot/vis/motioncontrollayer.cpp:1:
../../../libs/libsimeurobot/vis/debugobjects.h: In constructor
'TURAG::SimEurobot::Debug::DriveSplineV1::DriveSplineV1()':
../../../libs/libsimeurobot/vis/debugobjects.h:108:8:   in constexpr expansion
of 'TURAG::Pose()'
../../../tina/tina++/geometry/geometry.h:167:20:   in constexpr expansion of
'((TURAG::Pose*)this)->TURAG::Pose::x.TURAG::Units::Quantity<Dim>::Quantity<int>(0)'
../../../tina/tina++/geometry/units/unit.h:185:42:   in constexpr expansion of
'TURAG::Units::detail::toValue<int, 0u>(val)'
../../../libs/libsimeurobot/vis/debugobjects.h:108:8: internal compiler error:
in cxx_eval_call_expression, at cp/constexpr.c:1449
 struct DriveSplineV1 {
        ^~~~~~~~~~~~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.archlinux.org/> for instructions.
Makefile:3342: recipe for target 'motioncontrollayer.o' failed
make: *** [motioncontrollayer.o] Error 1


So here we have our ICE in cxx_eval_call_expression etc.