[Gambas-user] [Gambas Bug Tracker] Bug #979: gtk_text_buffer_get_insert () signal 11

[bugtracker at ...3416...]

http://gambaswiki.org/bugtracker/edit?object=BUG.979&from=L21haW4-

Ron KLINKIEN reported a new bug.

Summary
-------

gtk_text_buffer_get_insert () signal 11

Type             : Bug
Priority         : High
Gambas version   : 3.8.90 (TRUNK)
Product          : Unknown


Description
-----------

Open attached project, click 2-3 times on Test button and close program, you will get a signal 11 crash like below:

~/BugHttpGet$ gdb gbx3
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.04) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from gbx3...done.
(gdb) run
Starting program: /usr/bin/gbx3 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe4b6b700 (LWP 5947)]
[New Thread 0x7fffdffff700 (LWP 5948)]
[New Thread 0x7fffdf7fe700 (LWP 5949)]
[New Thread 0x7fffde0e7700 (LWP 5950)]
[New Thread 0x7fffdd8e6700 (LWP 5951)]
[Thread 0x7fffde0e7700 (LWP 5950) exited]
[New Thread 0x7fffde0e7700 (LWP 5954)]
[Thread 0x7fffde0e7700 (LWP 5954) exited]

Thread 1 "gbx3" received signal SIGSEGV, Segmentation fault.
0x00007ffff5897946 in gtk_text_buffer_get_insert ()
   from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
(gdb) bt
#0  0x00007ffff5897946 in gtk_text_buffer_get_insert ()
   from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
Backtrace stopped: Cannot access memory at address 0x7fffffffac48
(gdb)


System information
------------------

[System]
Gambas=3.9
OperatingSystem=Linux
Kernel=4.4.0-34-generic
Architecture=x86_64
Distribution=Ubuntu 16.04.1 LTS
Desktop=UNITY
Theme=Gtk
Language=en_US.UTF-8
Memory=16015M

[Libraries]
Cairo=libcairo.so.2.11400.6
Curl=libcurl.so.4.4.0
DBus=libdbus-1.so.3.14.6
GStreamer=libgstreamer-0.10.so.0.30.0
GStreamer=libgstreamer-1.0.so.0.802.0
GTK+2=libgtk-x11-2.0.so.0.2400.30
GTK+3=libgtk-3.so.0.1800.9
OpenGL=libGL.so.1.0.0
OpenGL=libGL.so.1.2.0
Poppler=libpoppler.so.58.0.0
QT4=libQtCore.so.4.8.7
QT5=libQt5Core.so.5.5.1
SDL=libSDL-1.2.so.0.11.4
SQLite=libsqlite3.so.0.8.6

[Envi<user>ment]
CLUTTER_IM_MODULE=xim
COMPIZ_BIN_PATH=/usr/bin/
COMPIZ_CONFIG_PROFILE=ubuntu
DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-Z9DsdNCShJ
DEFAULTS_PATH=/usr/share/gconf/ubuntu.default.path
DESKTOP_SESSION=ubuntu
DISPLAY=:0
GB_GUI=gb.qt4
GDMSESSION=ubuntu
GDM_LANG=en_US
GIO_LAUNCHED_DESKTOP_FILE=<home>/.local/share/applications/gambas3.desktop
GIO_LAUNCHED_DESKTOP_FILE_PID=6289
GNOME_DESKTOP_SESSION_ID=this-is-deprecated
GNOME_KEYRING_CONTROL=
GNOME_KEYRING_PID=
GPG_AGENT_INFO=<home>/.gnupg/S.gpg-agent:0:1
GTK2_MODULES=overlay-scrollbar
GTK_IM_MODULE=ibus
GTK_MODULES=gail:atk-bridge:unity-gtk-module
HOME=<home>
IM_CONFIG_PHASE=1
INSTANCE=
JOB=unity-settings-daemon
LANG=en_US.UTF-8
LANGUAGE=en_US
LC_ADDRESS=nl_NL.UTF-8
LC_IDENTIFICATION=nl_NL.UTF-8
LC_MEASUREMENT=nl_NL.UTF-8
LC_MONETARY=nl_NL.UTF-8
LC_NAME=nl_NL.UTF-8
LC_NUMERIC=nl_NL.UTF-8
LC_PAPER=nl_NL.UTF-8
LC_TELEPHONE=nl_NL.UTF-8
LC_TIME=nl_NL.UTF-8
LOGNAME=<user>
MANDATORY_PATH=/usr/share/gconf/ubuntu.mandatory.path
NODE_PATH=/usr/lib/nodejs:/usr/lib/node_modules:/usr/share/javascript
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
PWD=<home>
QT4_IM_MODULE=xim
QT_ACCESSIBILITY=1
QT_IM_MODULE=ibus
QT_LINUX_ACCESSIBILITY_ALWAYS_ON=1
QT_QPA_PLATFORMTHEME=appmenu-qt5
SESSION=ubuntu
SESSIONTYPE=gnome-session
SHELL=/bin/bash
SHLVL=0
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
TZ=:/etc/localtime
UPSTART_EVENTS=xsession started
UPSTART_INSTANCE=
UPSTART_JOB=unity7
UPSTART_SESSION=unix:abstract=/com/ubuntu/upstart-session/1000/4326
USER=<user>
XAUTHORITY=<home>/.Xauthority
XDG_CONFIG_DIRS=/etc/xdg/xdg-ubuntu:/usr/share/upstart/xdg:/etc/xdg
XDG_CURRENT_DESKTOP=Unity
XDG_DATA_DIRS=/usr/share/ubuntu:/usr/share/gnome:/usr/local/share/:/usr/share/:/var/lib/snapd/desktop
XDG_GREETER_DATA_DIR=/var/lib/lightdm-data/<user>
XDG_MENU_PREFIX=gnome-
XDG_RUNTIME_DIR=/run/user/1000
XDG_SEAT=seat0
XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
XDG_SESSION_DESKTOP=ubuntu
XDG_SESSION_ID=c5
XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0
XDG_SESSION_TYPE=x11
XDG_VTNR=7
XMODIFIERS=@...3498...=ibus