Re: GNU G-Golf 0.8.0-rc-3 available for testing

[David Pirotte <david@altosw.be>]

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Hi Florian,

> >  Could you tell  me if, when you run such commands in guile in your
> > Debian setup, you get similar output?  First with tracepoint:  

> With all due respect, this will get you nowhere, please upload the
> full gdb backtrace ... thanks

I patched the drawing-widget example so users may pass a -d or --debug
option, which triggers the setting of the %debug parameter.

This will track (some of the) g-golf (engine) calls 'only', so in this
particular situation that it segfault (in guix) upon a gtk snapshot
engine call, i probably will still very much need you to upload the
full gdb backtrace.

But it will at least give you some useful info on what's going on
'internally' - and who knows, might also give me some idea to further
investigate the problem ... tracking those calls is also a nice way to
learn about some g-golf internals ....

I pushed the patch to the devel branch, commit
8fbc8c27774986b4b5ad09a6545698b3e3ee1812, so, could either grab the
latest devel branch version, or simply grab the latest version of the example 

	https://git.savannah.gnu.org/cgit/g-golf.git/tree/examples/gtk-4/drawing-widget.scm?h=devel

then try (as shown below) and post the result here ...

Thanks,
David

Here is a debian session, passing the option at start-up, till i close
the window:

GNU Guile 3.0.9.179-8cabb
Copyright (C) 1995-2024 Free Software Foundation, Inc.
...

	[ given your guile session is in the appropriate directory

scheme@(guile-user)> (load "drawing-widget.scm")
scheme@(guile-user)> (main '("-d"))
;; g-application-run 
;;          application: #<<gtk-application> 7efed470ab10> 
;;                 argc: 0 
;;                 argv: () 
;; gtk-window-set-child 
;;               window: #<<gtk-application-window> 7efed470e270> 
;;                child: #<<drawing-widget> 7efed470e020> 
;; gtk-window-present 
;;               window: #<<gtk-application-window> 7efed470e270> 
;; g-golf-callback-closure-marshal 
;;   snapshot 
;;               widget: #<<drawing-widget> 7efed470e020> 
;;             snapshot: #<<gtk-snapshot> 7efed471b1f0> 
;; gtk-widget-get-width 
;;               widget: #<<drawing-widget> 7efed470e020> 
;; gtk-widget-get-height 
;;               widget: #<<drawing-widget> 7efed470e020> 
;; graphene-rect-alloc 
;; graphene-rect-init 
;;                 rect: #<pointer 0x5633517e0080> 
;;                    x: 0 
;;                    y: 0 
;;                width: 160 
;;               height: 283/2 
;; gtk-snapshot-append-color 
;;             snapshot: #<<gtk-snapshot> 7efed471b1f0> 
;;                color: (0.93 0.08 0.08 1.0) 
;;               bounds: #<pointer 0x5633517e0080> 
;; graphene-rect-alloc 
;; graphene-rect-init 
;;                 rect: #<pointer 0x5633517d8ae0> 
;;                    x: 160 
;;                    y: 0 
;;                width: 160 
;;               height: 283/2 
;; gtk-snapshot-append-color 
;;             snapshot: #<<gtk-snapshot> 7efed471b1f0> 
;;                color: (0.18 0.8 0.44 1.0) 
;;               bounds: #<pointer 0x5633517d8ae0> 
;; graphene-rect-alloc 
;; graphene-rect-init 
;;                 rect: #<pointer 0x563351803ec0> 
;;                    x: 0 
;;                    y: 283/2 
;;                width: 160 
;;               height: 283/2 
;; gtk-snapshot-append-color 
;;             snapshot: #<<gtk-snapshot> 7efed471b1f0> 
;;                color: (0.99 0.74 0.29 1.0) 
;;               bounds: #<pointer 0x563351803ec0> 
;; graphene-rect-alloc 
;; graphene-rect-init 
;;                 rect: #<pointer 0x563351804520> 
;;                    x: 160 
;;                    y: 283/2 
;;                width: 160 
;;               height: 283/2 
;; gtk-snapshot-append-color 
;;             snapshot: #<<gtk-snapshot> 7efed471b1f0> 
;;                color: (0.16 0.5 0.73 1.0) 
;;               bounds: #<pointer 0x563351804520> 
;; status 0 
$5 = 0
scheme@(guile-user)> 

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