https://bugs.kde.org/show_bug.cgi?id=507065
Bug ID: 507065
Summary: kdiff3 empty window on startup when used as git
mergetool
Classification: Applications
Product: kdiff3
Version First 1.12.3
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: application
Assignee: reeves...@gmail.com
Reporter: brunopit...@hotmail.com
Target Milestone: ---
SUMMARY
kdiff3 empty window on startup when used as git mergetool about 95% of the
time. Occasionally starts successfully.
STEPS TO REPRODUCE
1. Procure a large conflict
2. Set kdiff3 as git mergetool
3. Try to use it
OBSERVED RESULT
The three upper textareas are black and artifact when the kdiff3 window gets
resized, the lower textarea is the background color. All menus and toolbars are
greyed out. Kdiff3 can still be closed and asks if you want to save.
EXPECTED RESULT
kdiff3 can be used normally
SOFTWARE/OS VERSIONS
kdiff3 version:
KDE Plasma Version: 6.4.2
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1
openSUSE Tumbleweed 20250711
ADDITIONAL INFORMATION
Thread 5 (Thread 0x7fb4467976c0 (LWP 22096) "QDBusConnection"):
#0 __syscall_cancel_arch () at
../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1 0x00007fb4498969e8 in __internal_syscall_cancel (a1=<optimized out>,
a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=8,
a6=a6@entry=0, nr=271) at cancellation.c:49
#2 0x00007fb449896a41 in __syscall_cancel (a1=<optimized out>, a2=<optimized
out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=8, a6=a6@entry=0,
nr=271) at cancellation.c:75
#3 0x00007fb449911522 in __GI_ppoll (fds=fds@entry=0x56423d6efe20,
nfds=nfds@entry=3, timeout=<optimized out>, timeout@entry=0x0,
sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#4 0x00007fb44951addf in ppoll (__fds=0x56423d6efe20, __nfds=3, __timeout=0x0,
__ss=0x0) at /usr/include/bits/poll2.h:101
#5 g_main_context_poll_unlocked (priority=<optimized out>,
context=0x7fb440000c80, timeout_usec=<optimized out>, fds=0x56423d6efe20,
n_fds=3) at ../glib/gmain.c:4632
#6 g_main_context_iterate_unlocked (context=context@entry=0x7fb440000c80,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
../glib/gmain.c:4309
#7 0x00007fb44951b52c in g_main_context_iteration (context=0x7fb440000c80,
may_block=1) at ../glib/gmain.c:4379
#8 0x00007fb44a41de83 in QEventDispatcherGlib::processEvents
(this=0x7fb440000b70, flags=...) at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#9 0x00007fb44a1c3afb in QEventLoop::exec (this=0x7fb446796a00, flags=...) at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/corelib/global/qflags.h:77
#10 0x00007fb44a2b771c in QThread::exec (this=this@entry=0x7fb449ffeb20
<QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager>
>::instance()::holder>) at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/corelib/global/qflags.h:77
#11 0x00007fb449f7457e in QDBusConnectionManager::run (this=0x7fb449ffeb20
<QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager>
>::instance()::holder>) at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/dbus/qdbusconnectionmanager.cpp:144
#12 0x00007fb44a332eae in operator() (__closure=<optimized out>) at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/corelib/thread/qthread_unix.cpp:434
#13 (anonymous
namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> >
(t=...) at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/corelib/thread/qthread_unix.cpp:366
#14 QThreadPrivate::start (arg=0x7fb449ffeb20
<QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager>
>::instance()::holder>) at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/corelib/thread/qthread_unix.cpp:394
#15 0x00007fb44989a7be in start_thread (arg=<optimized out>) at
pthread_create.c:448
#16 0x00007fb44991edcc in __GI___clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 4 (Thread 0x7fb445f966c0 (LWP 22097) "QXcbEventQueue"):
#0 __syscall_cancel_arch () at
../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1 0x00007fb4498969e8 in __internal_syscall_cancel
(a1=a1@entry=140412244810056, a2=a2@entry=1, a3=a3@entry=-1, a4=a4@entry=0,
a5=a5@entry=0, a6=a6@entry=0, nr=7) at cancellation.c:49
#2 0x00007fb449896a41 in __syscall_cancel (a1=a1@entry=140412244810056,
a2=a2@entry=1, a3=a3@entry=-1, a4=a4@entry=0, a5=a5@entry=0, a6=a6@entry=0,
nr=7) at cancellation.c:75
#3 0x00007fb449910f9a in __GI___poll (fds=fds@entry=0x7fb445f95948,
nfds=nfds@entry=1, timeout=timeout@entry=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
#4 0x00007fb447ec9a62 in poll (__fds=0x7fb445f95948, __nfds=1, __timeout=-1)
at /usr/include/bits/poll2.h:44
#5 _xcb_conn_wait (c=c@entry=0x56423d6f33e0, vector=vector@entry=0x0,
count=count@entry=0x0, cond=<optimized out>) at
/usr/src/debug/libxcb-1.17.0/src/xcb_conn.c:510
#6 0x00007fb447ecb4bc in _xcb_conn_wait (c=0x56423d6f33e0,
cond=0x56423d6f3420, vector=0x0, count=0x0) at
/usr/src/debug/libxcb-1.17.0/src/xcb_conn.c:476
#7 xcb_wait_for_event (c=0x56423d6f33e0) at
/usr/src/debug/libxcb-1.17.0/src/xcb_in.c:703
#8 0x00007fb446b95378 in QXcbEventQueue::run (this=0x56423d6e79e0) at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/plugins/platforms/xcb/qxcbeventqueue.cpp:192
#9 0x00007fb44a332eae in operator() (__closure=<optimized out>) at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/corelib/thread/qthread_unix.cpp:434
#10 (anonymous
namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> >
(t=...) at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/corelib/thread/qthread_unix.cpp:366
#11 QThreadPrivate::start (arg=0x56423d6e79e0) at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/corelib/thread/qthread_unix.cpp:394
#12 0x00007fb44989a7be in start_thread (arg=<optimized out>) at
pthread_create.c:448
#13 0x00007fb44991edcc in __GI___clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 3 (Thread 0x7fb43cc6e6c0 (LWP 22098) "kdiff3:disk$0"):
#0 __syscall_cancel_arch () at
../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1 0x00007fb4498969e8 in __internal_syscall_cancel (a1=<optimized out>,
a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=0,
a6=a6@entry=4294967295, nr=202) at cancellation.c:49
#2 0x00007fb4498971bc in __futex_abstimed_wait_common64 (private=0,
futex_word=0x56423d8ce2d0, expected=<optimized out>, op=<optimized out>,
abstime=0x0, cancel=true) at futex-internal.c:57
#3 __futex_abstimed_wait_common (futex_word=futex_word@entry=0x56423d8ce2d0,
expected=<optimized out>, clockid=clockid@entry=0, abstime=abstime@entry=0x0,
private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#4 0x00007fb44989723f in __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x56423d8ce2d0, expected=<optimized out>,
clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at
futex-internal.c:139
#5 0x00007fb449899d08 in __pthread_cond_wait_common (cond=0x56423d8ce2b0,
mutex=0x56423d8ce280, clockid=0, abstime=0x0) at pthread_cond_wait.c:426
#6 ___pthread_cond_wait (cond=0x56423d8ce2b0, mutex=0x56423d8ce280) at
pthread_cond_wait.c:458
#7 0x00007fb43d601139 in cnd_wait (cond=<optimized out>, mtx=<optimized out>)
at ../src/c11/impl/threads_posix.c:111
#8 0x00007fb43d5bc13c in util_queue_thread_func
(input=input@entry=0x56423d8d1700) at ../src/util/u_queue.c:275
#9 0x00007fb43d601077 in impl_thrd_routine (p=<optimized out>) at
../src/c11/impl/threads_posix.c:43
#10 0x00007fb44989a7be in start_thread (arg=<optimized out>) at
pthread_create.c:448
#11 0x00007fb44991edcc in __GI___clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 2 (Thread 0x7fb42fbff6c0 (LWP 22099) "kdiff3:sh0"):
#0 __syscall_cancel_arch () at
../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1 0x00007fb4498969e8 in __internal_syscall_cancel (a1=<optimized out>,
a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=0,
a6=a6@entry=4294967295, nr=202) at cancellation.c:49
#2 0x00007fb4498971bc in __futex_abstimed_wait_common64 (private=0,
futex_word=0x56423d8d4fc0, expected=<optimized out>, op=<optimized out>,
abstime=0x0, cancel=true) at futex-internal.c:57
#3 __futex_abstimed_wait_common (futex_word=futex_word@entry=0x56423d8d4fc0,
expected=<optimized out>, clockid=clockid@entry=0, abstime=abstime@entry=0x0,
private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#4 0x00007fb44989723f in __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x56423d8d4fc0, expected=<optimized out>,
clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at
futex-internal.c:139
#5 0x00007fb449899d08 in __pthread_cond_wait_common (cond=0x56423d8d4fa0,
mutex=0x56423d8d4f70, clockid=0, abstime=0x0) at pthread_cond_wait.c:426
#6 ___pthread_cond_wait (cond=0x56423d8d4fa0, mutex=0x56423d8d4f70) at
pthread_cond_wait.c:458
#7 0x00007fb43d601139 in cnd_wait (cond=<optimized out>, mtx=<optimized out>)
at ../src/c11/impl/threads_posix.c:111
#8 0x00007fb43d5bc13c in util_queue_thread_func
(input=input@entry=0x56423d8d0c70) at ../src/util/u_queue.c:275
#9 0x00007fb43d601077 in impl_thrd_routine (p=<optimized out>) at
../src/c11/impl/threads_posix.c:43
#10 0x00007fb44989a7be in start_thread (arg=<optimized out>) at
pthread_create.c:448
#11 0x00007fb44991edcc in __GI___clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 1 (Thread 0x7fb446c69b00 (LWP 22095) "kdiff3"):
#0 __syscall_cancel_arch () at
../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1 0x00007fb4498969e8 in __internal_syscall_cancel (a1=<optimized out>,
a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=8,
a6=a6@entry=0, nr=271) at cancellation.c:49
#2 0x00007fb449896a41 in __syscall_cancel (a1=<optimized out>, a2=<optimized
out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=8, a6=a6@entry=0,
nr=271) at cancellation.c:75
#3 0x00007fb449911522 in __GI_ppoll (fds=fds@entry=0x56423d8a0330,
nfds=nfds@entry=2, timeout=<optimized out>, timeout@entry=0x7ffc58344350,
sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#4 0x00007fb44951addf in ppoll (__fds=0x56423d8a0330, __nfds=2,
__timeout=0x7ffc58344350, __ss=0x0) at /usr/include/bits/poll2.h:101
#5 g_main_context_poll_unlocked (priority=<optimized out>,
context=0x7fb440000f00, timeout_usec=<optimized out>, fds=0x56423d8a0330,
n_fds=2) at ../glib/gmain.c:4632
#6 g_main_context_iterate_unlocked (context=context@entry=0x7fb440000f00,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
../glib/gmain.c:4309
#7 0x00007fb44951b52c in g_main_context_iteration (context=0x7fb440000f00,
may_block=1) at ../glib/gmain.c:4379
#8 0x00007fb44a41de83 in QEventDispatcherGlib::processEvents
(this=0x56423d7984a0, flags=...) at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#9 0x00007fb44a1c3afb in QEventLoop::exec (this=0x7ffc583444b0, flags=...) at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/corelib/global/qflags.h:77
#10 0x00007fb44a1bc40c in QCoreApplication::exec () at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/corelib/global/qflags.h:77
#11 0x00007fb44aa17120 in QGuiApplication::exec () at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/gui/kernel/qguiapplication.cpp:1986
#12 0x00007fb44b3dcb79 in QApplication::exec () at
/usr/src/debug/qtbase-everywhere-src-6.9.1/src/widgets/kernel/qapplication.cpp:2570
#13 0x00005642356f22ab in main (argc=<optimized out>, argv=<optimized out>) at
/usr/src/debug/kdiff3-1.12.3/src/main.cpp:195
#14 0x00007fb44982b37b in __libc_start_call_main
(main=main@entry=0x5642356f1160 <main(qint32, char**)>, argc=argc@entry=13,
argv=argv@entry=0x7ffc58344948) at ../sysdeps/nptl/libc_start_call_main.h:58
#15 0x00007fb44982b44b in __libc_start_main_impl (main=0x5642356f1160
<main(qint32, char**)>, argc=13, argv=0x7ffc58344948, init=<optimized out>,
fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc58344938) at
../csu/libc-start.c:360
#16 0x00005642356f5a85 in _start () at ../sysdeps/x86_64/start.S:115
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