(Tested on Ubuntu 14.04.5 LTS - Unity 7.2.6, using Krita 3.1.1 appimage) Steps to reproduce: 1) create a new document 2) open an image 3) copy an area of the image 4) switch to the new document 5) paste (CTRL + V) 6) transform the pasted area and apply 7) exit Krita. Expected Results: exit Krita without crash. Actual Results: SIGABRT signal at Krita exit. (See also Bug 374317, not sure if it's related)
Created attachment 103087 [details] (GDB Report)
(Link to the image that I saved and opened as local file in step 2: https://upload.wikimedia.org/wikipedia/commons/d/d3/Cascade_carieul_1280x960.jpg)
I'm unable to reproduce on Ubuntu 16.04 LTS with the most recent Krita source, gdb reports a clean exit. Was there any other intermediate step, or saving of images involved? How did you apply the changes in step 6?
Created attachment 103153 [details] (Video example of the steps) (In reply to Phil Blackburn from comment #3) > Was there any other intermediate step, or > saving of images involved? How did you apply the changes in step 6? Hi Phil, here is a video showing the steps. Thanks for checking
Thanks a lot for the video. I'm still unable to reproduce as of git 132213b. Perhaps it's been fixed and one of the core devs can verify.
On 14.04 and OpenSUSE Leap I can reproduce this -- the message QPrinter: Must construct a QCoreApplication before a QPrinter is also shown, which is kind of weird. I can also reproduce it with git master on OpenSUSE Leap running Gnome: #0 0x00007fffed21a0c7 in raise () at /lib64/libc.so.6 #1 0x00007fffed21b478 in abort () at /lib64/libc.so.6 #2 0x00007fffedec521e in () at /home/boud/dev/deps/lib/libQt5Core.so.5 #3 0x00007ffff3c30760 in QPrinter::QPrinter(QPrinter::PrinterMode) () at /home/boud/dev/deps/lib/libQt5PrintSupport.so.5 #4 0x00007ffff3c308cc in QPrinter::QPrinter(QPrinter::PrinterMode) () at /home/boud/dev/deps/lib/libQt5PrintSupport.so.5 #5 0x00007fffd86672eb in EPSHandler::write(QImage const&) (this=0xa38e320, image=...) at /home/boud/dev/b/ext_frameworks/ext_kimageformats-prefix/src/ext_kimageformats/src/imageformats/eps.cpp:257 #6 0x00007fffee6bdc54 in QImageWriter::write(QImage const&) () at /home/boud/dev/deps/lib/libQt5Gui.so.5 #7 0x00007fffee69e336 in QImageData::doImageIO(QImage const*, QImageWriter*, int) const () at /home/boud/dev/deps/lib/libQt5Gui.so.5 #8 0x00007fffee69e4d6 in QImage::save(QIODevice*, char const*, int) const () at /home/boud/dev/deps/lib/libQt5Gui.so.5 #9 0x00007fffee66ecc9 in QInternalMimeData::renderDataHelper(QString const&, QMimeData const*) () at /home/boud/dev/deps/lib/libQt5Gui.so.5 #10 0x00007fffe5d39cc5 in () at /home/boud/dev/deps/plugins/platforms/../../lib/libQt5XcbQpa.so.5 #11 0x00007fffe5d29db5 in () at /home/boud/dev/deps/plugins/platforms/../../lib/libQt5XcbQpa.so.5 #12 0x00007fffe5d2a515 in () at /home/boud/dev/deps/plugins/platforms/../../lib/libQt5XcbQpa.so.5 #13 0x00007fffe5d3173f in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /home/boud/dev/deps/plugins/platforms/../../lib/libQt5XcbQpa.so.5 #14 0x00007fffe5d29161 in () at /home/boud/dev/deps/plugins/platforms/../../lib/libQt5XcbQpa.so.5 #15 0x00007fffe5d29284 in () at /home/boud/dev/deps/plugins/platforms/../../lib/libQt5XcbQpa.so.5 #16 0x00007fffe5d292d9 in () at /home/boud/dev/deps/plugins/platforms/../../lib/libQt5XcbQpa.so.5 #17 0x00007fffe5d2db61 in QXcbConnection::~QXcbConnection() () at /home/boud/dev/deps/plugins/platforms/../../lib/libQt5XcbQpa.so.5 #18 0x00007fffe5d2e349 in QXcbConnection::~QXcbConnection() () at /home/boud/dev/deps/plugins/platforms/../../lib/libQt5XcbQpa.so.5 #19 0x00007fffe5d34f7e in QXcbIntegration::~QXcbIntegration() () at /home/boud/dev/deps/plugins/platforms/../../lib/libQt5XcbQpa.so.5 #20 0x00007fffe5d35069 in QXcbIntegration::~QXcbIntegration() () at /home/boud/dev/deps/plugins/platforms/../../lib/libQt5XcbQpa.so.5 #21 0x00007fffee656c24 in QGuiApplicationPrivate::~QGuiApplicationPrivate() () at /home/boud/dev/deps/lib/libQt5Gui.so.5 #22 0x00007fffef097109 in QApplicationPrivate::~QApplicationPrivate() () at /home/boud/dev/deps/lib/libQt5Widgets.so.5 #23 0x00007fffee0dcb86 in QObject::~QObject() () at /home/boud/dev/deps/lib/libQt5Core.so.5 #24 0x00007fffee0ac38e in QCoreApplication::~QCoreApplication() () at /home/boud/dev/deps/lib/libQt5Core.so.5 #25 0x00007fffee656a7f in QGuiApplication::~QGuiApplication() () at /home/boud/dev/deps/lib/libQt5Gui.so.5 #26 0x00007fffef098c7a in QApplication::~QApplication() () at /home/boud/dev/deps/lib/libQt5Widgets.so.5 #27 0x00007ffff793b3de in QtSingleApplication::~QtSingleApplication() (this=0x7fffffffd590, __in_chrg=<optimized out>) at /home/boud/dev/krita/libs/ui/qtsingleapplication/qtsingleapplication.cpp:102 #28 0x00000000004050e3 in main(int, char**) (argc=1, argv=<optimized out>) at /home/boud/dev/krita/krita/main.cc:131 But the backtrace is entirely inside Qt and it seems to happen whenever there is something on the clipboard -- you only need to create a single document and select then copy something.
Extra note: it only happens in Gnome or Unity (well, probably also in Mate and other gnome/gtk desktops). It seems to happen because the clipboard in those systems asks for the clip in eps format. This is a bug in the eps kimageformats plugin, not Krita.
The QApplication is already running the destructor, still QInternalMimeData tries to save an image. If this cannot be avoided inside Qt, the image handlers need to detect that condition and not do any work that requires a working QApplication.
Created attachment 110017 [details] (GDB Report) (Confirming with Krita 4.0.0-beta1.1 on Ubuntu 14.04 Unity - I understand that probably it isn't an issue with Krita)
This is probably fixed by http://code.qt.io/cgit/qt/qtbase.git/commit/src/plugins/platforms/xcb?id=f43c9697bcae997be3eb6db9504f3d7b64601148 available in Qt 5.6.3 or 5.9.x or newer. If you can still reproduce it with these Qt versions, please add a comment.