Crash on shutdown (Linux and Mac)

[amesgames]

On Linux, when shutdown crash occurs, this text can be found in output:
Xlib: sequence lost (0x10675 > 0x67b) in reply type 0x23!
Xlib: sequence lost (0x11b93 > 0x1b95) in reply type 0x23!
Xlib: sequence lost (0x148f4 > 0x48fa) in reply type 0x23!
Segmentation fault (core dumped)

On Mac, it simply segfaults at shutdown.

[amesgames]

Running offscreen sample under apitrace on Linux produces a backtrace on segfault. This might be helpful to anyone wanting this fixed:

~/projects/apitrace/build/apitrace trace --output app.trace ./qt3d-offlinerenderer
apitrace: loaded into ~/projects/Qt3D-OffscreenRenderer/qt3d-offlinerenderer
apitrace: tracing to app.trace
apitrace: warning: unknown function "glBlendBarrier"
apitrace: warning: unknown function "glPrimitiveBoundingBox"
apitrace: warning: unknown function "glDiscardFramebuffer"
apitrace: warning: hiding program binary formats (apitrace/apitrace#316)
Xlib: sequence lost (0x10622 > 0x627) in reply type 0x23!
Xlib: sequence lost (0x10772 > 0x777) in reply type 0x23!
Xlib: sequence lost (0x108f2 > 0x8f7) in reply type 0x23!
apitrace: warning: caught signal 11
apitrace: flushing trace
~/projects/apitrace/build/wrappers/glxtrace.so+0x1cdc2c
/lib/x86_64-linux-gnu/libc.so.6+0x3ef1f
~/projects/opt/qt5/lib/libQt5Core.so.5: _ZN6QMutex4lockEv+0x7
~/projects/opt/qt5/lib/libQt53DRender.so.5+0x1577fe
~/projects/opt/qt5/lib/libQt53DRender.so.5: _ZN10Qt3DRender6Render8Renderer17submitRenderViewsERK7QVectorIPNS0_10RenderViewEE+0x739
~/projects/opt/qt5/lib/libQt53DRender.so.5: _ZN10Qt3DRender6Render8Renderer8doRenderEb+0x4d4
~/projects/opt/qt5/lib/libQt53DRender.so.5: _ZN10Qt3DRender6Render8Renderer6renderEv+0x22
~/projects/opt/qt5/lib/libQt53DRender.so.5+0x8d9ec
~/projects/opt/qt5/lib/libQt5Core.so.5+0xb178e
/lib/x86_64-linux-gnu/libpthread.so.0+0x76da
/lib/x86_64-linux-gnu/libc.so.6: clone+0x3e
?
apitrace: info: taking default action for signal 11

[florianblume]

Thanks for your issue! I am aware of it but deemed it a Qt internal bug that's why I did not try to solve it.