bug#24839: 26.0.50; Emacs freezes when opening file attached

bug#24839: 26.0.50; Emacs freezes when opening file attached

[Andreas Röhler]

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In GNU Emacs 26.0.50.1 (i686-pc-linux-gnu, GTK+ Version 3.14.5)
  of 2016-10-11


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 """
    This is an example.

    * x hello this is an example. hello this is an example. hello this is an example. hello this is an example. hello this is an example.
    * y hi this is an example. hi this is an example. hi this is an example. hi this is an example. hi this is an example.

    - x hello this is an example. hello this is an example. hello this is an example. hello this is an example. hello this is an example.
    - y hi this is an example. hi this is an example. h i this is an example. hi this is an example. hi this is an example.

    1. x hello this is an example. hello this is an example. hello this is an example. hello this is an example. hello this is an example.
    2. y hi this is an example. hi this is an example. hi this is an example. hi this is an example. hi this is an example.

    : x hello this is an example. hello this is an example. hello this is an example. hello this is an example. hello this is an example.
    : y hi this is an example. hi this is an example. hi this is an example. hi this is an example. hi this is an example.

    :param hello this is an example. hello this is an example. hello this is an example. hello this is an example. hello this is an example.
    :param hi this is an example. hi this is an example. hi this is an example. hi this is an example. hi this is an example.

    @param hello this is an example. hello this is an example. hello this is an example. hello this is an example. hello this is an example.
    @param hi this is an example. hi this is an example. hi this is an example. hi this is an example. hi this is an example.
    """

bug#24839: 26.0.50; Emacs freezes when opening file attached

[npostavs]

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tags 24839 confirmed
found 24839 25.1
quit

Andreas Röhler <andreas.roehler@easy-emacs.de> writes:

> In GNU Emacs 26.0.50.1 (i686-pc-linux-gnu, GTK+ Version 3.14.5)
>  of 2016-10-11

I see it also in 25.1, GNU/Linux and Windows 10.  But not in 24.5.

C-g doesn't work, but here's a backtrace from sending SIGUSR2:


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Debugger entered--entering a function:
* #[nil "r\bq\210\302	!)\207" [buffer table set-syntax-table] 2]()
  font-lock-default-fontify-region(601 1101 nil)
  font-lock-fontify-region(601 1101)
  #[257 "\211\300\301\"\211\242\306=\203\x10