[Merge] lp:~fboucault/camera-app/ui_rewrite into lp:camera-app

[Olivier Tilloy]

Review: Needs Fixing

I’m seeing a crash at startup, not 100% reproducible but I can trigger it approximately once every 3 launches (on N7 with image #101):

#0  0xaff57bc8 in AdvancedCameraSettings::hasFlash() const ()
   from /opt/click.ubuntu.com/com.ubuntu.camera/3.0.0.318/lib/arm-linux-gnueabihf/CameraApp/libcamera-qml.so
#1  0xaff587ac in AdvancedCameraSettings::qt_metacall(QMetaObject::Call, int, void**) ()
   from /opt/click.ubuntu.com/com.ubuntu.camera/3.0.0.318/lib/arm-linux-gnueabihf/CameraApp/libcamera-qml.so
#2  0xb6553a3e in Direct (property=..., n=0x0, output=0xbeabcc70, 
    object=0x666ac8) at jsruntime/qv4qobjectwrapper.cpp:139
#3  LoadProperty<ReadAccessor::Direct> (notifier=0x0, property=..., 
    object=0x666ac8, engine=0x5a9c58) at jsruntime/qv4qobjectwrapper.cpp:179
#4  QV4::QObjectWrapper::getProperty (object=0x666ac8, 
    ctx=ctx at entry=0xbeabce38, property=<optimized out>, 
    captureRequired=captureRequired at entry=true)
    at jsruntime/qv4qobjectwrapper.cpp:395
#5  0xb6553d34 in QV4::QObjectWrapper::getQmlProperty (this=0xaeba1660, 
    ctx=0xbeabce38, qmlContext=<optimized out>, n=<optimized out>, 
    revisionMode=QV4::QObjectWrapper::IgnoreRevision, hasProperty=0x0, 
    includeImports=true) at jsruntime/qv4qobjectwrapper.cpp:333
#6  0xb6553e6e in QV4::QObjectWrapper::get (m=0xaeba1660, name=..., 
    hasProperty=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:672
#7  0xb655b470 in get (hasProperty=<optimized out>, name=..., 
    this=<optimized out>) at jsruntime/qv4object_p.h:244
#8  QV4::Runtime::getProperty (ctx=0xbeabce38, object=..., name=...)
    at jsruntime/qv4runtime.cpp:672
#9  0xaff1799e in ?? ()

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https://code.launchpad.net/~fboucault/camera-app/ui_rewrite/+merge/224451
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