Crashes in qt5-gui

[Mikhail T.]

Hello!

This week I decided to try KDE5 on a new machine, and, unfortunately can 
not bring it up... The plasmashell and ksplashqml both crash at startup 
-- I get the X11-screen, but it is empty save for mouse cursor. The 
crash is in the same place for both, in a little plugin installed by 
qt5-gui.

First I thought, something is miscompiled, but even when qt5-gui is 
rebuilt without march and WITH_DEBUG=yes, I still get the same crash -- 
although the backtrace (attached) has more information.

My machine runs FreeBSD-11.x/amd64 of very recent vintage.

What am I doing wrong? Thank you. Yours,

    -mi

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GNU gdb (GDB) 8.1 [GDB v8.1 for FreeBSD]
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Reading symbols from /opt/bin/ksplashqml...(no debugging symbols found)...done.
[New LWP 100589]
[New LWP 101028]
Core was generated by `ksplashqml Breeze --pid'.
Program terminated with signal SIGABRT, Aborted.
#0  0x0000000804f3e20a in thr_kill () from /lib/libc.so.7
[Current thread is 1 (LWP 100589)]
(gdb) #0  0x0000000804f3e20a in thr_kill () from /lib/libc.so.7
No symbol table info available.
#1  0x0000000804f3e131 in __raise (s=6) at /usr/src/lib/libc/gen/raise.c:52
        id = 100589
#2  0x0000000804f3da59 in abort () at /usr/src/lib/libc/stdlib/abort.c:65
        act = <optimized out>
#3  0x000000080409d3a9 in ?? () from /opt/lib/qt5/libQt5Core.so.5
No symbol table info available.
#4  0x000000080409e908 in QMessageLogger::fatal(char const*, ...) const ()
   from /opt/lib/qt5/libQt5Core.so.5
No symbol table info available.
#5  0x00000008142162d3 in QGLXContext::init (this=0x80fe427d0, 
    screen=0x80fe72000, share=0x0) at qglxintegration.cpp:323
        config = 0x0
        visualInfo = 0x0
        window = 0
#6  0x0000000814215591 in QGLXContext::QGLXContext (this=0x80fe427d0, 
    screen=0x80fe72000, format=..., share=0x0, nativeHandle=...)
    at qglxintegration.cpp:184
No locals.
#7  0x000000081421449c in QXcbGlxIntegration::createPlatformOpenGLContext (
    this=0x80ff1b820, context=0x7fffffffe458) at qxcbglxintegration.cpp:184
        screen = 0x80fe72000
        platformContext = 0x7fffffffe290
#8  0x0000000811bf777b in QXcbIntegration::createPlatformOpenGLContext (
    this=0x80fe421e0, context=0x7fffffffe458) at qxcbintegration.cpp:279
        screen = 0x80fe72000
        glIntegration = 0x80ff1b820
#9  0x000000080377f78a in QOpenGLContext::create (this=0x7fffffffe458)
    at kernel/qopenglcontext.cpp:612
        d = 0x80fe48540
#10 0x0000000814217b34 in QGLXContext::queryDummyContext ()
    at qglxintegration.cpp:691
        skip = false
        oldContext = 0x0
        oldSurface = 0x0
        surface = {d = 0x813e2f840}
        display = 0x80fe4d400
        glxvendor = 0x807f683c0 "Mesa Project and SGI"
        context = {<QObject> = {
            _vptr$QObject = 0x803e881a0 <vtable for QOpenGLContext+16>, 
            static staticMetaObject = {d = {superdata = 0x0, 
                stringdata = 0x8046e1200, data = 0x8043ccab0, 
                static_metacall = 0x8042a6520, relatedMetaObjects = 0x0, 
                extradata = 0x0}}, d_ptr = {d = 0x80fe48540}, 
            static staticQtMetaObject = {d = {superdata = 0x0, 
                stringdata = 0x8046d5f80, data = 0x8043c9f30, 
                static_metacall = 0x0, relatedMetaObjects = 0x0, 
                extradata = 0x0}}}, static staticMetaObject = {d = {
              superdata = 0x8046bf4b8 <QObject::staticMetaObject>, 
              stringdata = 0x803e97fa0 <qt_meta_stringdata_QOpenGLContext>, 
              data = 0x803b5e370 <qt_meta_data_QOpenGLContext>, 
              static_metacall = 0x803782230 <QOpenGLContext::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, 
              extradata = 0x0}}}
#11 0x0000000814217fb9 in QGLXContext::supportsThreading ()
    at qglxintegration.cpp:738
No locals.
#12 0x0000000814214611 in QXcbGlxIntegration::supportsThreadedOpenGL (
    this=0x80ff1b820) at qxcbglxintegration.cpp:215
No locals.
#13 0x0000000811bf79cd in QXcbIntegration::hasCapability (this=0x80fe421e0, 
    cap=QPlatformIntegration::ThreadedOpenGL) at qxcbintegration.cpp:313
        integration = 0x80ff1b820
        connection = 0x80fe29c00
#14 0x0000000800f97c5a in QSGRenderLoop::instance() ()
   from /opt/lib/qt5/libQt5Quick.so.5
No symbol table info available.
#15 0x0000000800ffeade in QQuickWindowPrivate::init(QQuickWindow*, QQuickRenderControl*) () from /opt/lib/qt5/libQt5Quick.so.5
No symbol table info available.
#16 0x00000008008320ff in KQuickAddons::QuickViewSharedEngine::QuickViewSharedEngine(QWindow*) () from /opt/lib/libKF5QuickAddons.so.5
No symbol table info available.
#17 0x0000000000406ce2 in ?? ()
No symbol table info available.
#18 0x000000000040608a in ?? ()
No symbol table info available.
#19 0x0000000000405cdb in ?? ()
No symbol table info available.
#20 0x000000000040557a in ?? ()
No symbol table info available.
#21 0x0000000000404fe5 in ?? ()
No symbol table info available.
#22 0x000000080062a000 in ?? ()
No symbol table info available.
#23 0x0000000000000000 in ?? ()
No symbol table info available.
(gdb)