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DrRacket, IDE for Racket
http://www.racket-lang.org/
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Gtk issue on close-tab #645

Closed Metaxal closed 6 months ago

Metaxal commented 8 months ago

To reproduce:

  1. Open DrRacket from the command line to see the error port outputs in the console.
  2. Open a new tab.
  3. Close the tab (either from the menu or with a keyboard shortcut)

The following error message is displayed in the console:

Gtk: gtk_notebook_get_tab_label: assertion 'list != NULL' failed

While the tab does close and the message seems innocuous, it get displayed on the error port which breaks some tests (such as quickscript-test).

Related: https://racket.discourse.group/t/gtk-gtk-notebook-get-tab-label-assertion-list-null-failed/2373

racket-discourse-github-bot commented 8 months ago

This issue has been mentioned on Racket Discourse. There might be relevant details there:

https://racket.discourse.group/t/gtk-gtk-notebook-get-tab-label-assertion-list-null-failed/2373/2

Metaxal commented 8 months ago

The error appears as far as racket -7.5.0.3 (I haven't checked further), so it seems likely that this is a gtk-only issue.

Strangely, none of the tests drracket-test fail with this error, even though it appears as soon as a tab is closed — which likely means that no single test closes a tab.

mflatt commented 8 months ago

I haven't yet been able to replicate this error. If it's a question of suppressing a message that's due to an inconsistency in the library, I think you can do that by running with the PLTSTDERR environment variable set to none.

Metaxal commented 8 months ago

Thanks, I was looking for a way to suppress this error on DrDr, not just locally. For now I just remove the failing tests.