[Fontconfig-bugs] [Bug 101159] New: San Franciso TrueType fonts from macOS 10.12 cause lag

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101159

            Bug ID: 101159
           Summary: San Franciso TrueType fonts from macOS 10.12 cause lag
           Product: fontconfig
           Version: 2.12
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: fc-cache
          Assignee: fontconfig-bugs at lists.freedesktop.org
          Reporter: ranguvar at archlinux.us
        QA Contact: freedesktop at behdad.org

Created attachment 131456
  --> https://bugs.freedesktop.org/attachment.cgi?id=131456&action=edit
macOS San Francisco TTFs

I have a licensed macOS 10.12 installation on another computer.

Copying the fonts to Linux and using them there has worked fine, save three of
the newer TrueTypes offered - SFNSDisplay.ttf, SFNSTextItalic.ttf, and
SFNSText.ttf.

Each of these, when added to a font folder and cached, cause the launch of
simple desktop applications to go from instantaneous, to just under a second of
lag.

Also noteworthy is that fc-cache -v, once these fonts are installed, seems to
find a corrupt cache file on every run, and it is there that the stall happens.

This is using fontconfig-2.12.1 on a fully updated Arch system.

If it is unacceptable to host this attachment, let me know and I will take it
down (and upload elsewhere, if permitted).

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