Crash in opengl fonthandler_cc:99

[Jens Beyer]

Start game in windowed mode
Go to Options
Change resolution
Apply
Go back to Options
Change resolution
Move the mouse over one of the + or - buttons (change resolution or Autosave stuff)
----> crash

(gdb) bt
#0 0x00000000012d62b0 in ?? ()
#1 0x0000000000bd25bf in UI::Font_Handler1::render (this=0x15a7530, text="<rt><p><font face=DejaVuSerif size=14 bold=1 color=ffff00>Verkleinere den Wert um 10</font></p></rt>", w=360)
    at /xxxxxxx/widelands/widelands/src/graphic/font_handler1.cc:99
#2 0x0000000000bb1c84 in UI::Panel::draw_tooltip (dst=..., text="Verkleinere den Wert um 10") at /xxxxxxx/widelands/widelands/src/ui_basic/panel.cc:1122
#3 0x0000000000bafe01 in UI::Panel::run (this=0x1d28180) at /xxxxxxx/widelands/widelands/src/ui_basic/panel.cc:192
#4 0x00000000009c9203 in Options_Ctrl::handle_menu (this=0x7fffffffc6a0) at /xxxxxxx/widelands/widelands/src/ui_fsmenu/options.cc:646
#5 0x00000000009c9177 in Options_Ctrl::Options_Ctrl (this=0x7fffffffc6a0, s=...) at /xxxxxxx/widelands/widelands/src/ui_fsmenu/options.cc:637
#6 0x000000000099eeb4 in WLApplication::mainmenu (this=0x1273190) at /xxxxxxx/widelands/widelands/src/wlapplication.cc:1603
#7 0x000000000099a0c0 in WLApplication::run (this=0x1273190) at /xxxxxxx/widelands/widelands/src/wlapplication.cc:482
#8 0x000000000099828f in main (argc=1, argv=0x7fffffffdcc8) at /xxxxxxx/widelands/widelands/src/main.cc:107

This should also be the cause for the mail by "Lars Schim­mer" <l.schim­mer@cg­v.tugr­az.at> at the public mailing list.

[Jens Beyer (qcumber-some)]

Additional problem:
After changing resolution like above, it is also not possible to start a game anymore.

Bot happens also without bumblebee/Optimus in the run, so this fact from the mail does not count.

[SirVer (sirver)]

likely a reinitialization error somewhere.

[Hans Joachim Desserud (hjd)]

Looks like this is also triggered by toggeling fullscreen/windowed mode, see bug 1137765. I don't know whether we simply wish to mark this as a duplicate or to keep both bugs open to make sure we double check both ways of triggering the crash is fixed once we have solved this.

[SirVer (sirver)]

I started working on this and I have something that sortof works - but it crashes in random places on my machine. I would appreciate some testing and maybe a reliable way to reproduce a crash. The code is in lp:~widelands-dev/widelands/graphic_resetting

[cghislai (charlyghislain)]

could not make it crash here

[SirVer (sirver)]

It should definitively crash if you change your bpp to something else.

Charly, could you also test lp:~widelands-dev/widelands/graphic_resetting

[cghislai (charlyghislain)]

I tested that branch when i posted #5. But I don't have any option to change the bpp, its always 32 on my linux box.

[SirVer (sirver)]

You should still be able to trigger it by switching between OpenGL and SDL - something should crash :).

[cghislai (charlyghislain)]

ah yeah, indeed, i wasn't using opengl. With opengl rendering, i get a crash whenever stats are turned on. It comes from various places, so I'm not sure it is specially related to this bug. I'll investigate

[Borim (borim)]

When I disable opengl, widelands crash after I pressed the apply button the second time(advanced options and normal options)

I am not sure if this have the same reason as the bug described here, but it sounds familiar. The backtrace is attached.

Steps to reproduce:
1. start widelands
2. enter advanced option
3. disable opengl
4. click apply
5. in the normal option screen click, aplly again. -> crash

[Hans Joachim Desserud (hjd)]

Borim: yes, see also bug 1130905. I'm not sure either if all these crashes when changing settings are duplicates of each other, but I don't think we'll really find out until it is properly fixed.

[SirVer (sirver)]

Fixed in r6635.

[SirVer (sirver)]

Released in build-18 rc1.