[bug #68237] "load" emits long series of "classdef not found" warnings when loading classdef arrays w/o definition

Rik <[email protected]> Fri, 17 Apr 2026 07:35:06 -0400 (EDT)

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

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Follow-up Comment #22, bug #68237 (group octave):

Responding to various questions

1) Use this pattern to find a warning ID, if it exists.

lastwarn ('', '');  # Clear last warning and warning ID
CODE
[MSG, MSGID] = lastwarn ()

Note, *CODE* may need to be just the single line that produces the warning.
In Philip's case, there are other lines of code that are apparently generating
warnings so calling the function is not specific enough.

2) New warnings should be placed in the file *scripts/help/warning_ids.m*.
Keep the warnings alphabetized.

3) The call *octave_quit()* does a single check to see if there is a keystroke
Ctrl+C in the input buffer.  For performance reasons it should not be placed
in the innermost part of a for loop.  In this case, checking once per
"variable" (which might be a struct element) seems good enough.

4) We try to keep line lengths to 80 characters

+    std::unordered_set<std::string> m_missing_classes; // Cache missing
classes to minimize lookup time

This line can be re-written to place the comment first.

+    // Cache missing classes to minimize lookup time
+    std::unordered_set<std::string> m_missing_classes;




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