[Scummvm-tracker] [ScummVM :: Bugs] #14338: AGS: Dreams in the Witch House - reproducible segfault

[ScummVM :: Bugs]

#14338: AGS: Dreams in the Witch House - reproducible segfault
-------------------+--------------------------
Reporter:  rfht    |       Owner:  (none)
    Type:  defect  |      Status:  new
Priority:  normal  |   Component:  Engine: AGS
 Version:          |  Resolution:
Keywords:          |        Game:
-------------------+--------------------------
Description changed by rfht:

Old description:

> Game: Dreams in the Witch House
>
> OS: OpenBSD
>
> ScummVM version: 2.7.0
>
> Description:
> In the dream sequence with the labyrinth, there is an outdoors area. If I
> click on "Landscape", the game reproducibly segfaults. I'm attaching
> pictures to clarify the location and a savegame. Stacktrace below
> indicates this happens in engines/ags/shared/gfx/allegro_bitmap.h, line
> 119:
>
> How to Reproduce:
> see above
>
> Top of Stacktrace:
> #0  0x00000c6deced556c in AGS3::AGS::Shared::Bitmap::GetSize
> (this=<optimized out>)
>     at ./engines/ags/shared/gfx/allegro_bitmap.h:119
> No locals.
> #1  AGS3::prepare_roomview_frame (view=<optimized out>) at
> engines/ags/engine/ac/draw.cpp:498
>         camera_buffer = @0xc709a7d6f40:
> {<Common::SafeBool<Common::SharedPtr<AGS3::AGS::Shared::Bitmap>,
> Common::impl::no_base<Common::SharedPtr<AGS3::AGS::Shared::Bitmap> > >> =
> {<Common::impl::no_base<Common::SharedPtr<AGS3::AGS::Shared::Bitmap> >> =
> {<No data fields>}, <No data fields>}, _pointer = 0xc7026e54940, _tracker
> = 0xc7026e4d140}
>         camera_frame = <optimized out>
>         view_sz = <optimized out>
>         draw_dat = <optimized out>
>         view_index = <optimized out>
>         cam_sz = <optimized out>
> #2  0x00000c6deced5802 in AGS3::sync_roomview (view=0xc6ff64b1200)
>     at engines/ags/engine/ac/draw.cpp:512
> No locals.
> #3  0x00000c6deced63c2 in AGS3::on_roomcamera_changed (cam=<optimized
> out>)
>     at engines/ags/engine/ac/draw.cpp:595
>         vp = {<Common::SafeBool<Common::SharedPtr<AGS3::Viewport>,
> Common::impl::no_base<Common::SharedPtr<AGS3::Viewport> > >> =
> {<Common::impl::no_base<Common::SharedPtr<AGS3::Viewport> >> = {<No data
> fields>}, <No data fields>}, _pointer = 0xc70c001c000, _tracker =
> 0xc70cc770960}
>         vr = {_pointer = 0xc70c001c000, _tracker = 0xc70cc770960}
>         __begin2 = 0xc70002a61f0
>         __end2 = 0xc70002a6200
>         __range2 = <optimized out>
>         viewrefs = {_capacity = <optimized out>, _size = <optimized out>,
>           _storage = 0xc70002a61f0}
> #4  0x00000c6decf10ceb in AGS3::GameState::UpdateViewports
> (this=<optimized out>)
>     at engines/ags/engine/ac/game_state.cpp:158
>         cam = {<Common::SafeBool<Common::SharedPtr<AGS3::Camera>,
> Common::impl::no_base<Common::SharedPtr<AGS3::Camera> > >> =
> {<Common::impl::no_base<Common::SharedPtr<AGS3::Camera> >> = {<No data
> fields>}, <No data fields>}, _pointer = 0xc701167cc00, _tracker =
> 0xc70cc770d40}
>         __range1 = <optimized out>
>         __begin1 = 0xc6ffae1c600
>         __end1 = 0xc6ffae1c610
>         vp_changed = <optimized out>
> #5  0x00000c6deced723b in AGS3::construct_game_scene
> (full_redraw=<optimized out>)
>     at engines/ags/engine/ac/draw.cpp:2167
> No locals.
> #6  0x00000c6decede8bf in AGS3::render_graphics (extraBitmap=0x0,
> extraX=0, extraY=0)
>     at engines/ags/engine/ac/draw.cpp:2406
> No locals.
> [...]

New description:

 Game: Dreams in the Witch House

 OS: OpenBSD

 ScummVM version: 2.7.0

 Description:
 In the dream sequence with the labyrinth, there is an outdoors area. If I
 click on "Landscape", the game reproducibly segfaults. I'm attaching
 pictures to clarify the location and a savegame. Stacktrace below
 indicates this happens in engines/ags/shared/gfx/allegro_bitmap.h, line
 119:

 How to Reproduce:
 see above

 Top of Stacktrace:
 {{{
 #0  0x00000c6deced556c in AGS3::AGS::Shared::Bitmap::GetSize
 (this=<optimized out>)
     at ./engines/ags/shared/gfx/allegro_bitmap.h:119
 No locals.
 #1  AGS3::prepare_roomview_frame (view=<optimized out>) at
 engines/ags/engine/ac/draw.cpp:498
         camera_buffer = @0xc709a7d6f40:
 {<Common::SafeBool<Common::SharedPtr<AGS3::AGS::Shared::Bitmap>,
 Common::impl::no_base<Common::SharedPtr<AGS3::AGS::Shared::Bitmap> > >> =
 {<Common::impl::no_base<Common::SharedPtr<AGS3::AGS::Shared::Bitmap> >> =
 {<No data fields>}, <No data fields>}, _pointer = 0xc7026e54940, _tracker
 = 0xc7026e4d140}
         camera_frame = <optimized out>
         view_sz = <optimized out>
         draw_dat = <optimized out>
         view_index = <optimized out>
         cam_sz = <optimized out>
 #2  0x00000c6deced5802 in AGS3::sync_roomview (view=0xc6ff64b1200)
     at engines/ags/engine/ac/draw.cpp:512
 No locals.
 #3  0x00000c6deced63c2 in AGS3::on_roomcamera_changed (cam=<optimized
 out>)
     at engines/ags/engine/ac/draw.cpp:595
         vp = {<Common::SafeBool<Common::SharedPtr<AGS3::Viewport>,
 Common::impl::no_base<Common::SharedPtr<AGS3::Viewport> > >> =
 {<Common::impl::no_base<Common::SharedPtr<AGS3::Viewport> >> = {<No data
 fields>}, <No data fields>}, _pointer = 0xc70c001c000, _tracker =
 0xc70cc770960}
         vr = {_pointer = 0xc70c001c000, _tracker = 0xc70cc770960}
         __begin2 = 0xc70002a61f0
         __end2 = 0xc70002a6200
         __range2 = <optimized out>
         viewrefs = {_capacity = <optimized out>, _size = <optimized out>,
           _storage = 0xc70002a61f0}
 #4  0x00000c6decf10ceb in AGS3::GameState::UpdateViewports
 (this=<optimized out>)
     at engines/ags/engine/ac/game_state.cpp:158
         cam = {<Common::SafeBool<Common::SharedPtr<AGS3::Camera>,
 Common::impl::no_base<Common::SharedPtr<AGS3::Camera> > >> =
 {<Common::impl::no_base<Common::SharedPtr<AGS3::Camera> >> = {<No data
 fields>}, <No data fields>}, _pointer = 0xc701167cc00, _tracker =
 0xc70cc770d40}
         __range1 = <optimized out>
         __begin1 = 0xc6ffae1c600
         __end1 = 0xc6ffae1c610
         vp_changed = <optimized out>
 #5  0x00000c6deced723b in AGS3::construct_game_scene
 (full_redraw=<optimized out>)
     at engines/ags/engine/ac/draw.cpp:2167
 No locals.
 #6  0x00000c6decede8bf in AGS3::render_graphics (extraBitmap=0x0,
 extraX=0, extraY=0)
     at engines/ags/engine/ac/draw.cpp:2406
 No locals.
 [...]
 }}}

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Ticket URL: <https://bugs.scummvm.org/ticket/14338#comment:1>
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