octave-gui crashed when using its internal editor

[Shuang Song]

I'm using Ubuntu 16.04 amd64 version. And the Octave-gui package is installed from offical repo. I can use octave-cli in terminal well, but when using code editor in octave-gui, only when typing several characters ( less than 10 charactors), The program freezed and crashed. I don't what happend.

BTW, when I typing, I saw the auto-complete bar flashed fast and dispeared. Maybe some problem with display framework? Incompative library version?

Here is a part of the crash report:

Package: octave 4.0.0-3ubuntu9.1
Title: octave-gui crashed with SIGSEGV in QWidget::testAttribute_helper()

My laptop with the same software environment throw the same exception.

[Shuang Song (sxs)]

some guys told me it due to bugs in qt.He told me I could use this script to launch Octave-gui without crash.

#!/bin/bash
export QT4_IM_MODULE=
export QT_IM_MODULE=
/usr/bin/octave --force-gui

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.