Thanks, valgrind tend to avoid the segfault but does collect the errors still, your log has one
==18294== Invalid free() / delete / delete[] / realloc() ==18294== at 0x483897B: free (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so) ==18294== by 0x4891CEF: ??? (in /usr/lib/x86_64-linux-gnu/gedit/ That's missing debug symbols though, could you install those debug packages and try again? https://launchpad.net/ubuntu/+source/gtk+3.0/3.24.5-1ubuntu1/+build/16354960/+files/libgtk-3-0-dbgsym_3.24.5-1ubuntu1_amd64.ddeb https://launchpad.net/ubuntu/+source/glib2.0/2.59.2-2/+build/16381172/+files/libglib2.0-0-dbgsym_2.59.2-2_amd64.ddeb https://launchpad.net/ubuntu/+source/gedit/3.31.90-1build1/+build/16354854/+files/gedit-dbgsym_3.31.90-1build1_amd64.ddeb -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gedit in Ubuntu. https://bugs.launchpad.net/bugs/1817459 Title: gedit assert failure: corrupted size vs. prev_size To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gedit/+bug/1817459/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
