Browser lock-up/gray screen of death when running custom javascript

[ahungry]

Hi @joachifm, when I modify your #'simple-browser-main function as follows and run it (after loading the cl-webkit2 and simple-browser.lisp libraries) the browser opens, gives the alert, and then freezes as soon as I click on the alert (which does not close).

If I then tab off the alert to the browser, the browser grays out and is unusable (even a window manager kill command will not close it).

The modified function:

(defun simple-browser-main ()
  "A single-window browser with no keyboard or mouse input.                                                                    
Loads and renders a single web page."
  (gtk:within-main-loop
    (let ((win (make-instance 'gtk:gtk-window))
          (view (make-instance 'webkit2:webkit-web-view)))
      (gobject:g-signal-connect win "destroy"
                                #'(lambda (widget)
                                    (declare (ignore widget))
                                    (gtk:leave-gtk-main)))
      (gtk:gtk-container-add win view)
      (webkit2:webkit-web-view-load-uri view "http://www.example.com")
      (webkit2:webkit-web-view-run-javascript
       view
       "alert(1);"
       (cffi:null-pointer)
       (cffi:null-pointer)
       (cffi:null-pointer))
      (gtk:gtk-widget-show-all win))))

Please also find my own repository I wrote in C to make sure this was an issue with the cl-webkit bindings and not the underlying webkit2 libraries.

https://github.com/ahungry/puny-browser/blob/master/main.c

I'm running Arch Linux and it uses the 4.0.so file for webkit2.

[joachifm]

Thanks for the report. The webkit binding doesn't do anything except call C, so the lisp version should be equivalent to the C version. This is quite vexing ...
Seeing as lispkit is switching to QT, I'm not too motivated to look into this problem, however, unless you have some other use for it.

[ahungry]

No urgency, my bug tracking was a result of frustration at being unable to try out and use lispkit.

Probably an issue with cl-cffi-gtk or something :)

Thanks.

[joachifm]

Okay, cool. If you choose to proceed debugging, let me know if you have any questions about the code.