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bug#37786: 26.3; Emacs crashes when calling function to decode string
From: |
Allen Li |
Subject: |
bug#37786: 26.3; Emacs crashes when calling function to decode string |
Date: |
Sat, 26 Oct 2019 02:44:52 -0700 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) |
Robert Pluim <rpluim@gmail.com> writes:
>>>>>> On Tue, 22 Oct 2019 20:25:40 -0700, Allen Li <darkfeline@felesatra.moe>
>>>>>> said:
>
> Allen> I haven't touched xft-ignore-color-fonts (and it reproduces from
> emacs -Q)
> >>
> Allen> #define FC_MAJOR 2
> Allen> #define FC_MINOR 13
> Allen> #define FC_REVISION 91
> >>
>
> Thatʼs a very recent (and maybe even unreleased) version of
> fontconfig.
>
> Allen> Arch Linux
>
> Hmm. Could you try the following against emacs-26 and see if it fixes
> your crash? (the character will almost certainly end up displayed
> wrong). This looks more like a fontconfig bug than anything else: the
> pattern we've supplied to FcFontList explicitly says "donʼt give me
> color fonts".
Yep, this fixes the crash and I get the box with unicode codepoint
inside. I don't know anything about fontconfig, so I can't comment on
whether this is a fontconfig bug.
>
> diff --git i/lisp/international/fontset.el w/lisp/international/fontset.el
> index c90d4f53bd..e80a1a87b9 100644
> --- i/lisp/international/fontset.el
> +++ w/lisp/international/fontset.el
> @@ -804,7 +804,6 @@ setup-default-fontset
> #x2664
> (#x2667 . #x2669)
> (#x266C . #x26FF)
> - (#x2700 . #x27bF) ;; Dingbats
> (#x27C0 . #x27EF) ;; Misc Mathematical Symbols-A
> (#x27F0 . #x27FF) ;; Supplemental Arrows-A
> (#x2900 . #x297F) ;; Supplemental Arrows-B
> diff --git i/src/ftfont.c w/src/ftfont.c
> index 823fb2095c..017b349318 100644
> --- i/src/ftfont.c
> +++ w/src/ftfont.c
> @@ -861,6 +861,9 @@ ftfont_list (struct frame *f, Lisp_Object spec)
> #endif /* FC_CAPABILITY */
> #ifdef FC_FONTFORMAT
> FC_FONTFORMAT,
> +#endif
> +#ifdef FC_COLOR
> + FC_COLOR,
> #endif
> NULL);
> if (! objset)
> @@ -902,6 +905,15 @@ ftfont_list (struct frame *f, Lisp_Object spec)
> {
> Lisp_Object entity;
>
> + {
> + FcBool b;
> + if (FcPatternGetBool (fontset->fonts[i], FC_COLOR, 0, &b)
> + == FcResultMatch && b)
> + {
> + fprintf (stderr, "Skipping Color font\n");
> + continue;
> + }
> + }
> if (spacing >= 0)
> {
> int this;
- bug#37786: 26.3; Emacs crashes when calling function to decode string, (continued)
- bug#37786: 26.3; Emacs crashes when calling function to decode string, Lars Ingebrigtsen, 2019/10/17
- bug#37786: 26.3; Emacs crashes when calling function to decode string, Robert Pluim, 2019/10/17
- bug#37786: 26.3; Emacs crashes when calling function to decode string, Allen Li, 2019/10/18
- bug#37786: 26.3; Emacs crashes when calling function to decode string, Robert Pluim, 2019/10/18
- bug#37786: 26.3; Emacs crashes when calling function to decode string, Allen Li, 2019/10/18
- bug#37786: 26.3; Emacs crashes when calling function to decode string, Robert Pluim, 2019/10/21
- bug#37786: 26.3; Emacs crashes when calling function to decode string, Allen Li, 2019/10/21
- bug#37786: 26.3; Emacs crashes when calling function to decode string, Robert Pluim, 2019/10/22
- bug#37786: 26.3; Emacs crashes when calling function to decode string, Allen Li, 2019/10/22
- bug#37786: 26.3; Emacs crashes when calling function to decode string, Robert Pluim, 2019/10/25
- bug#37786: 26.3; Emacs crashes when calling function to decode string,
Allen Li <=
- bug#37786: 26.3; Emacs crashes when calling function to decode string, Robert Pluim, 2019/10/27