[bug #68237] "load" emits long series of "classdef not found" warnings when loading struct array

foreverallama <[email protected]> Thu, 16 Apr 2026 12:12:57 -0400 (EDT)

Newsgroups	gmane.comp.gnu.octave.bugs
Message-ID	<[email protected]>

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Follow-up Comment #19, bug #68237 (group octave):

Attaching a patch that resolves the issue:
- Added an internal cache in subsystem for missing classes to prevent repeated
lookups. @kolmanthomas this might be something to look into for text formats.
- classdef-not-found warnings are now displayed only once per missing class.
Additionally displaying the classname in the warning.
- Checking for interrupts with `octave_quit ()` when loading struct and cell
arrays. I kept the check in these cases as only they have the potential to be
deeply nested and cause potential slowdown.

I wasn't sure where to update docs for warning IDs. I found
"scripts/help/warning_ids.m", is this the right place to update?

(file #58476)

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