Opening the file dialog from imageviewer (Linux 64bit) via File/Open causes an exit crash.

#0 0x00007ffff6fe33f1 in QBasicAtomicInt::operator== (this=0x0, value=0) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:70
#1 0x00007ffff71b9c78 in qt_painter_removePaintDevice (dev=0xb1b880) at qt-46/src/gui/painting/qpainter.cpp:7532
#2 0x00007ffff7194a5b in ~QPaintDevice (this=0xb1b880, __in_chrg=<value optimized out>) at painting/qpaintdevice.cpp:58
#3 0x00007ffff711c47c in ~QPixmap (this=0xb1b880, __in_chrg=<value optimized out>) at image/qpixmap.cpp:325
#4 0x00007ffff209b08c in ?? () from /usr/lib/kde4/plugins/styles/oxygen.so
#5 0x00007ffff20a7b87 in ?? () from /usr/lib/kde4/plugins/styles/oxygen.so
#6 0x00007ffff20a7e56 in ?? () from /usr/lib/kde4/plugins/styles/oxygen.so
#7 0x00007ffff5b5dc12 in __run_exit_handlers (status=0) at exit.c:78
#8 *__GI_exit (status=0) at exit.c:100
#9 0x00007ffff5b43ac4 in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>,
init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack

The test "qimage" apparently only checks whether the image format detection works. It probably should be extended to actually load the image?

#0  0x00007f0bc64973f1 in QBasicAtomicInt::operator== (this=0x0, value=0) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:70
#1  0x00007f0bc666dc70 in qt_painter_removePaintDevice (dev=0xdea0e8) at qt-46/src/gui/painting/qpainter.cpp:7532
#2  0x00007f0bc6648a53 in ~QPaintDevice (this=0xdea0e8, __in_chrg=<value optimized out>)
    at  qt-46/src/gui/painting/qpaintdevice.cpp:58
#3  0x00007f0bc65a2988 in ~QImage (this=0xdea0e8, __in_chrg=<value optimized out>) at qt-46/src/gui/image/qimage.cpp:1303
#4  0x00007f0bc0d955d0 in KIconLoader::~KIconLoader() () from /usr/lib/libkdeui.so.5
#5  0x00007f0bc4c96c12 in __run_exit_handlers (status=0) at exit.c:78
#6  *__GI_exit (status=0) at exit.c:100
#7  0x00007f0bc4c7cac4 in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>,
    init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff11072f08) at libc-start.c:252
#8  0x0000000000407c19 in _start () at ../sysdeps/x86_64/elf/start.S:113

==3411== Invalid read of size 4
==3411==    at 0x50623F1: QBasicAtomicInt::operator==(int) const (qbasicatomic.h:70)
==3411==    by 0x5238C6F: qt_painter_removePaintDevice(QPaintDevice*) (qpainter.cpp:7532)
==3411==    by 0x5213A52: QPaintDevice::~QPaintDevice() (qpaintdevice.cpp:58)
==3411==    by 0x516D987: QImage::~QImage() (qimage.cpp:1303)
==3411==    by 0xB8E55CF: KIconLoader::~KIconLoader() (in /usr/lib/libkdeui.so.5.3.0)
==3411==    by 0x712CC11: exit (exit.c:78)
==3411==    by 0x7112AC3: (below main) (libc-start.c:252)
==3411==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==3411== 
==3411== 
==3411== Process terminating with default action of signal 11 (SIGSEGV)
==3411==  Access not within mapped region at address 0x0
==3411==    at 0x50623F1: QBasicAtomicInt::operator==(int) const (qbasicatomic.h:70)
==3411==    by 0x5238C6F: qt_painter_removePaintDevice(QPaintDevice*) (qpainter.cpp:7532)
==3411==    by 0x5213A52: QPaintDevice::~QPaintDevice() (qpaintdevice.cpp:58)
==3411==    by 0x516D987: QImage::~QImage() (qimage.cpp:1303)
==3411==    by 0xB8E55CF: KIconLoader::~KIconLoader() (in /usr/lib/libkdeui.so.5.3.0)
==3411==    by 0x712CC11: exit (exit.c:78)
==3411==    by 0x7112AC3: (below main) (libc-start.c:252)
==3411==  If you believe this happened as a result of a stack
==3411==  overflow in your program's main thread (unlikely but
==3411==  possible), you can try to increase the size of the
==3411==  main thread stack using the --main-stacksize= flag.
==3411==  The main thread stack size used in this run was 8388608.
==3411==