Created attachment 749727 [details]
gdb backtrace
Actually, this bug is a crash from /usr/lib64/ibus/ibus-engine-libpinyin.
You'll find attached a gdb backtrace at the crash time.
I couldn't get a core for it, though the core ulimit value is set to unlimited.
I would be happy to run that in valgrind if only I knew how to do it for only
that process spawned by the ibus daemon.