bug#38750: Segmentfault on Emacs 26.3

[Eli Zaretskii]

> From: c4droid <c4droid@foxmail.com>
> Date: Thu, 26 Dec 2019 20:14:13 +0800
> Cc: hekinami <zoubibo@amiunique.net>
> 
> * Phenomenon
> GNU Emacs crashed with a segmentation fault by initializing with a font
> change setting.
> * Environment
>   1. Linux Mint 19.2
>   2. GNU Emacs 26.3 (Compiled from source)
> * How to reproduce
>   1. Use the specified .emacs.d (Latest commint 248995b)
>      $ git clone --depth 1 https://github.com/hekinami/dotemacs ~/.emacs.d
>   2. Run emacs to initialize .emacs.d
>      $ emacs # Be waiting for the completation of packages installing 
> patiently
>   3. Create a file (Just because of a miss of the configuration)
>      $ mkdir -p ~/.emacs.d/contents/organizer/fin
>      $ touch ~/.emacs.d/contents/organizer/fin/fin.ledger
>   4. Revise .emacs.d/settings.org
>      From:
>      #+BEGIN_SRC emacs-lisp
>      (use-package all-the-icons
>        :ensure t) ;; M-x all-the-icons-install-fonts
>      #+END_SRC
>      To:
>      #+BEGIN_SRC emacs-lisp
>      (use-package all-the-icons
>        :ensure t
>        :config
>        (set-fontset-font t 'unicode (font-spec :family "all-the-icons") nil 
> 'append)
>          (set-fontset-font t 'unicode (font-spec :family "file-icons") nil 
> 'append)
>          (set-fontset-font t 'unicode (font-spec :family "Material Icons") 
> nil 'append)
>          (set-fontset-font t 'unicode (font-spec :family "github-octicons") 
> nil 'append)
>          (set-fontset-font t 'unicode (font-spec :family "FontAwesome") nil 
> 'append)
>          (set-fontset-font t 'unicode (font-spec :family "Weather Icons") nil 
> 'append)) ;; M-x all-the-icons-install-fonts
>      #+END_SRC

Another manifestation of bug#38569?