GNU bug report logs - #75725
SIGSEGV in emacs 30.0.93

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Florian Franzmann <bwlf <at> bandrate.org>
Cc: 75725 <at> debbugs.gnu.org
Subject: bug#75725: SIGSEGV in emacs 30.0.93
Date: Tue, 21 Jan 2025 21:09:19 +0200

> Date: Tue, 21 Jan 2025 18:20:05 +0100
> From: Florian Franzmann <bwlf <at> bandrate.org>
> Cc: 75725 <at> debbugs.gnu.org
> 
> Here is what I have in my config regarding fonts:
> 
> (setq doom-font (font-spec :family "MartianMono Nerd Font" :size 8.000000)
>       doom-big-font (font-spec :family "MartianMono Nerd Font" :size 14.000000)
>       doom-variable-pitch-font (font-spec :family "Noto Sans" :size 12.000000)
>       doom-symbol-font (font-spec :family "MartianMono Nerd Font")
>       doom-serif-font (font-spec :family "Noto Serif" :size 12.000000)
>       my-org-font "Crimson Pro")
> ;; ...
> (defun my-refine-org-theme ()
>   "Custom refinements of the org-mode appearance."
>   (when window-system
>     (let* (
>            (custom--inhibit-theme-enable nil)
>            (variable-tuple     `(:font ,my-org-font))
>            (base-font-color     (face-foreground 'default nil 'default))
>            (headline           `(:inherit default :foreground ,base-font-color))
>            )
> 
>       (custom-theme-set-faces
>        'user
>        '(org-block ((t (:inherit fixed-pitch))))
>        '(org-code ((t (:inherit (shadow fixed-pitch)))))
>        '(org-document-info ((t (:foreground "dark orange"))))
>        '(org-document-info-keyword ((t (:inherit (shadow fixed-pitch)))))
>        '(org-indent ((t (:inherit (org-hide fixed-pitch)))))
>        '(org-link ((t (:foreground "royal blue" :underline t))))
>        '(org-meta-line ((t (:inherit (font-lock-comment-face fixed-pitch)))))
>        '(org-property-value ((t (:inherit fixed-pitch))) t)
>        '(org-special-keyword ((t (:inherit (font-lock-comment-face fixed-pitch)))))
>        '(org-table ((t (:inherit fixed-pitch :foreground "#83a598"))))
>        '(org-tag ((t (:inherit (shadow fixed-pitch) :weight bold :height 1.0))))
>        '(org-verbatim ((t (:inherit (shadow fixed-pitch)))))
>        `(org-document-title ((t (,@headline ,@variable-tuple :height 2.0736 :underline nil :bold nil))))
>        `(org-level-1 ((t (,@headline ,@variable-tuple :height 2.0736))))
>        `(org-level-2 ((t (,@headline ,@variable-tuple :height 1.728))))
>        `(org-level-3 ((t (,@headline ,@variable-tuple :height 1.44))))
>        `(org-level-4 ((t (,@headline ,@variable-tuple :height 1.2))))
>        `(org-level-5 ((t (,@headline ,@variable-tuple :height 1.0))))
>        `(org-level-6 ((t (,@headline ,@variable-tuple :height 1.0))))
>        `(org-level-7 ((t (,@headline ,@variable-tuple :height 1.0))))
>        `(org-level-8 ((t (,@headline ,@variable-tuple :height 1.0))))
>        `(org-default ((t (,@headline ,@variable-tuple :height 1.0))))
>        )
>       ))
>   )
> 
> and then somewhere
>   (add-hook 'after-enable-theme-hook 'my-refine-org-theme)
>   (add-hook 'org-mode-hook 'my-refine-org-theme)

Hmm... nothing stands out yet.

> Maybe using MartianMono as doom-symbol-font is problematic?

I don't know yet.  Which characters is doom-symbol-font used for?

But you could try that hypothesis by using some other font there, and
seeing if the previous build of Emacs still crashes then.

Also, any idea which font is used on the mode line, and
what part of the mode line uses the '(raise FACTOR)' display property
there?  That's the part where the display code hit the font = NULL
condition.

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