[Gambas-bugtracker] Bug #1709: new _read and _write methods crash with jit

[bugtracker at gambaswiki.org]

http://gambaswiki.org/bugtracker/edit?object=BUG.1709&from=L21haW4-

Brian G reported a new bug.

Summary
-------

new _read and _write methods crash with jit

Type             : Bug
Priority         : High
Gambas version   : Master
Product          : JIT compiler


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

The _read or _write cause a random crash when the fast class calling them is created and accessed inside a function which is not fast!

The attached example calls the class which is defined as fast from a main which is not defined as fast this causes a random memory pointer error

in my primary app the jit just crashes with

** 
** OOPS! INTERNAL ERROR. Program aborting, sorry! :-(
** Stack mismatch in JIT function (SP +1)

** 
** Please send a bug report to the gambas bugtracker [1] or to the gambas mailing-list [2].
** [1] http://gambaswiki.org/bugtracker
** [2] https://lists.gambas-basic.org/listinfo/user
** 

the first time the class object is called

in this example the crash is somewhat more random


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

[System]
Gambas=3.14.90 2429cff72 (master)
OperatingSystem=Linux
Kernel=5.3.0-24-generic
Architecture=x86_64
Distribution=Linux Mint 19.2 Tina
Desktop=MATE
Theme=Qt5CTProxy
Language=en_US.UTF-8
Memory=7340M

[Libraries]
Cairo=libcairo.so.2.11510.0
Curl=libcurl.so.4.5.0
DBus=libdbus-1.so.3.19.4
GStreamer=libgstreamer-1.0.so.0.1405.0
GTK+2=libgtk-x11-2.0.so.0.2400.32
GTK+3=libgtk-3.so.0.2200.30
OpenGL=libGL.so.1.0.0
Poppler=libpoppler.so.73.0.0
QT4=libQtCore.so.4.8.7
QT5=libQt5Core.so.5.9.5
SDL=libSDL-1.2.so.0.11.4
SQLite=libsqlite3.so.0.8.6

[Environment]
CLUTTER_BACKEND=x11
COMPIZ_CONFIG_PROFILE=mate
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
DEFAULTS_PATH=/usr/share/gconf/mate.default.path
DESKTOP_SESSION=mate
DISPLAY=:0
GB_GUI=gb.qt5
GDMSESSION=mate
GDM_LANG=en_US
GIO_LAUNCHED_DESKTOP_FILE=<home>/Desktop/gambas3.desktop
GIO_LAUNCHED_DESKTOP_FILE_PID=7629
GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1
GTK_MODULES=gail:atk-bridge
GTK_OVERLAY_SCROLLING=0
HOME=<home>
INSIDE_CAJA_PYTHON=
LANG=en_US.UTF-8
LANGUAGE=en_US.UTF-8
LOGNAME=<user>
MANDATORY_PATH=/usr/share/gconf/mate.mandatory.path
MATE_DESKTOP_SESSION_ID=this-is-deprecated
PATH=<home>/.local/bin:<home>/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
PWD=<home>
QT_ACCESSIBILITY=1
QT_AUTO_SCREEN_SCALE_FACTOR=0
QT_LOGGING_RULES=*.debug=false
QT_QPA_PLATFORMTHEME=qt5ct
QT_SCALE_FACTOR=1
SESSION_MANAGER=local/<hostname>:@/tmp/.ICE-unix/5463,unix/<hostname>:/tmp/.ICE-unix/5463
SHELL=/bin/bash
SHLVL=0
SSH_AGENT_PID=5799
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
TZ=:/etc/localtime
USER=<user>
XAUTHORITY=<home>/.Xauthority
XDG_CONFIG_DIRS=/etc/xdg/xdg-mate:/etc/xdg
XDG_CURRENT_DESKTOP=MATE
XDG_DATA_DIRS=/usr/share/mate:<home>/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr/share
XDG_GREETER_DATA_DIR=/var/lib/lightdm-data/<user>
XDG_RUNTIME_DIR=/run/user/1000
XDG_SEAT=seat0
XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
XDG_SESSION_DESKTOP=mate
XDG_SESSION_ID=c8
XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session3
XDG_SESSION_TYPE=x11
XDG_VTNR=7