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bug#61629: master: Sometimes M-x imenu throws an error when there's a si
From: |
Alan Mackenzie |
Subject: |
bug#61629: master: Sometimes M-x imenu throws an error when there's a single function in the buffer. |
Date: |
Sun, 19 Feb 2023 16:17:03 +0000 |
Bug fixed in master.
On Sun, Feb 19, 2023 at 15:39:13 +0000, Alan Mackenzie wrote:
> On the master branch, the recipe below leads to an error being thrown
> from imenu.
> Awareness of this bug resulted from the thread Subject: Error in C++
> Mode with Emacs 27.0.90, Date: Tue 24 Mar 2020, From: Angelo Graziosi.
> This thread reported a bug in imenu, which never made it to debbugs, but
> which was partially fixed.
> Thanks to Dmitry Gutov, who made me aware of the bit that didn't get
> fixed then.
> To reproduce the error in the master branch:
> (i) emacs -Q in a GUI environment.
> (ii) Evaluate the following:
> ;; C/C++ modes
> (defun my-c-mode ()
> "My customization for `c-mode' and `c++-mode'."
> ;; Add index of func. to menu bar
> (imenu-add-to-menubar "Functions"))
> ;; c++-mode
> (add-hook 'c-mode-common-hook 'my-c-mode)
> (setq imenu-auto-rescan t)
> (setq imenu-use-popup-menu t)
> (iii) Type the following into an empty C++ buffer called graziosi.cc:
> int main ()
> {
> return 0;
> }
> (iv) M-x imenu<RET>.
> This throws the error "Wrong type argument: seqencep, #<marker at 1 in
> graziosi.cc>". This is a bug.
--
Alan Mackenzie (Nuremberg, Germany).