piggz@linux-f1uu ~/projects/build-gadget_crash-Desktop_Qt_5_8_0_GCC_64bit-Debug $ gdb ./gadget_crash 
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Reading symbols from ./gadget_crash...done.
(gdb) r
Starting program: /home/piggz/projects/build-gadget_crash-Desktop_Qt_5_8_0_GCC_64bit-Debug/gadget_crash 
<snip missing symbols>
Created object
Created gadget

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff72518ad in ?? () from /home/piggz/sdks/Qt5.8.0/5.8/gcc_64/lib/libQt5Qml.so.5
(gdb) bt
#0  0x00007ffff72518ad in ?? () from /home/piggz/sdks/Qt5.8.0/5.8/gcc_64/lib/libQt5Qml.so.5
#1  0x00007ffff7252741 in ?? () from /home/piggz/sdks/Qt5.8.0/5.8/gcc_64/lib/libQt5Qml.so.5
#2  0x00007ffff72531ef in ?? () from /home/piggz/sdks/Qt5.8.0/5.8/gcc_64/lib/libQt5Qml.so.5
#3  0x00007ffff72533da in QV4::QMetaObjectWrapper::callConstructor(QQmlPropertyData const&, QV4::ExecutionEngine*, QV4::CallData*) const () from /home/piggz/sdks/Qt5.8.0/5.8/gcc_64/lib/libQt5Qml.so.5
#4  0x00007ffff7253c12 in QV4::QMetaObjectWrapper::constructInternal(QV4::CallData*) const () from /home/piggz/sdks/Qt5.8.0/5.8/gcc_64/lib/libQt5Qml.so.5
#5  0x00007ffff7253c7c in QV4::QMetaObjectWrapper::construct(QV4::Managed const*, QV4::Scope&, QV4::CallData*) () from /home/piggz/sdks/Qt5.8.0/5.8/gcc_64/lib/libQt5Qml.so.5
#6  0x00007ffff726a44c in QV4::Runtime::method_constructActivationProperty(QV4::ExecutionEngine*, int, QV4::CallData*) () from /home/piggz/sdks/Qt5.8.0/5.8/gcc_64/lib/libQt5Qml.so.5
#7  0x00007ffff7e0609c in ?? ()
#8  0x0000000000000000 in ?? ()