Bug in pict3d leads to crash in DrRacket

Questions & Answers
1

There has been a bug with pict3d for some time now.

Already posted the problem a couple of times on the racket discord. Hopefully someone here can fix it

2

Thanks for the bump. Perhaps unsurprisingly, I'm unable to reproduce this bug on macOS. Are there other linux desktop users that can test this?

1 Like
3

Please, could anyone else with linux ( or another os besides mac os ) try to replicate the bug?

4

I see the bug as well. The current-pict3d-legacy? parameter does not change the results.

5

This appears to be a pretty fundamental issue in racket/draw. The following program crashes for me (on 8.17):

#lang racket
(require racket/gui/base)

(define canvas (new canvas% [parent (new frame% [label ""])] [style '(gl)]))
(send (send canvas get-dc) get-gl-context)
6

For me, too:

philip@bastet:/tmp$ cat sam.rkt 
#lang racket
(require racket/gui/base)

(define canvas (new canvas% [parent (new frame% [label ""])] [style '(gl)]))
(send (send canvas get-dc) get-gl-context)
philip@bastet:/tmp$ racket sam.rkt 

(process:410960): Gtk-WARNING **: 16:25:02.222: Locale not supported by C library.
        Using the fallback 'C' locale.
Gtk-Message: 16:25:02.312: Failed to load module "colorreload-gtk-module"
Gtk-Message: 16:25:02.312: Failed to load module "window-decorations-gtk-module"
invalid memory reference.  Some debugging context lost
  context...:
   /gnu/store/z0qlv55n78aajs2f6r5jcq1rfcwrdlrb-racket-vm-cs-8.17/opt/racket-vm/collects/racket/private/more-scheme.rkt:266:2: call-with-exception-handler
   /gnu/store/z0qlv55n78aajs2f6r5jcq1rfcwrdlrb-racket-vm-cs-8.17/opt/racket-vm/collects/racket/private/promise.rkt:104:0: force/generic
   /gnu/store/1c5x53nqspxpsqqipvzzf99wpas532qb-racket-8.17/lib/racket/pkgs/gui-lib/mred/private/wx/gtk/gl-context.rkt:352:0: make-gtk-drawable-gl-context
   /gnu/store/1c5x53nqspxpsqqipvzzf99wpas532qb-racket-8.17/lib/racket/pkgs/gui-lib/mred/private/wx/gtk/gl-context.rkt:465:0: make-gtk-widget-gl-context
   /gnu/store/1c5x53nqspxpsqqipvzzf99wpas532qb-racket-8.17/lib/racket/pkgs/gui-lib/mred/private/wx/gtk/dc.rkt:190:4: get-gl-context method in dc%
   .../private/arrow-higher-order.rkt:379:33
   body of "/tmp/sam.rkt"

(The Gtk locale and module-loading messages are probably due to my local setup, but the rest shouldn't be.)

7

This code is not crashing for me on Linux. I'm running Mint 20, which is fairly old, and Racket from git(only 2 commits behind).

8

Are you suggesting pict3d is bugged because of an error with racket/draw?

9

Yes, I do not think the bug is in pict3d.