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bug#32038: 27.0.50; Emacs hangs when using :propertize mode line constru


From: Jonathan Kyle Mitchell
Subject: bug#32038: 27.0.50; Emacs hangs when using :propertize mode line construct and not providing a property value
Date: Mon, 02 Jul 2018 23:46:42 -0500
User-agent: mu4e 1.0; emacs 26.1

Jonathan Kyle Mitchell <kyle@jonathanmitchell.org> writes:

> Michał Kondraciuk <k.michal@zoho.com> writes:
>
>> When I evaluate this, Emacs becomes unresponsive and keeps
>> consuming 100% of my cpu:
>>
>> (progn
>>   (setq mode-line-format '(:propertize "a" face))
>>   (force-mode-line-update))
>>
>> Repository revision: ee3e432300054ca488896e39fca57b10d733330a
>
> I can also reproduce this issue on Emacs 26.1.

I compiled a debug build of Emacs 27.0.50 and took the attached
backtrace with a breakpoing on `error'.  Emacs stopped in
`validate_plist' as called from `set_text_properties' with the message
"Odd length text property list".

Attachment: txtKgW8gYMzom.txt
Description: bug#32038 set_text_propery backtrace

--
Jonathan Kyle Mitchell

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