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bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' fro
From: |
Robert Pluim |
Subject: |
bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1' |
Date: |
Thu, 03 Sep 2020 12:06:53 +0200 |
>>>>> On Thu, 3 Sep 2020 11:53:05 +0200, Alexander Shukaev
>>>>> <emacs@Alexander.Shukaev.name> said:
Alexander> On 03/09/2020 11:50, Alexander Shukaev wrote:
>> On 03/09/2020 11:40, Alexander Shukaev wrote:
>>> (gdb) f 7
>>> #7 0x0000555555a8d875 in xfont_supported_scripts
>>> (display=0x555556594940, fontname=0x55556a79e428 "-misc-trirong
>>> medium-medium-i-normal--0-0-0-0-p-0-iso10646-1",
>>> props=XIL(0x7ffff27926e5),
>>> encoding=0x7ffff23ab8d0) at xfont.c:266
>>> 266 xfont = XLoadQueryFont (display, fontname);
>>> (gdb) pp fontname
>>> #<INVALID_LISP_OBJECT 0x55556a79e428>
>>> (gdb) pp fontname
>>> #<INVALID_LISP_OBJECT 0x55556a79e428>
>>> (gdb) p fontname
>>> $3 = 0x55556a79e428 "-misc-trirong
>>> medium-medium-i-normal--0-0-0-0-p-0-iso10646-1"
>>> (gdb)
>> It appears to always be different `fontname' here as I try multiple
>> times to reproduce. Maybe it's not really hanging but is merely
>> ultra-slow somehow in looping over the fonts here. Any ideas?
Alexander> Hmm, right, waited for about a minute or so, and the file got
opened
Alexander> finally. Reopening it was instant as well as if something got
Alexander> cached/loaded already. So any ideas how to speed things up
here? I
Alexander> don't think I've encountered that with 26.3...
You can check easily enough by building emacs-27 --without-cairo, that
should get you back to emacs-26's font handling.
The issue is: why is Emacs falling back to the 'x' backend?
Robert
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Alexander Shukaev, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Robert Pluim, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Pip Cet, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Alexander Shukaev, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Alexander Shukaev, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Robert Pluim, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Alexander Shukaev, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Alexander Shukaev, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Alexander Shukaev, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1',
Robert Pluim <=
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Alexander Shukaev, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Robert Pluim, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Alexander Shukaev, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Robert Pluim, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Andreas Schwab, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Robert Pluim, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Andreas Schwab, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Robert Pluim, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Andreas Schwab, 2020/09/03
- bug#43177: Bug: Emacs 27.1 hangs forever in `FcCharSetSubtractCount' from '/usr/lib/libfontconfig.so.1', Robert Pluim, 2020/09/03