From: npostavs@users.sourceforge.net
To: Thierry Volpiatto <thierry.volpiatto@gmail.com>
Cc: 25391@debbugs.gnu.org
Subject: bug#25391: 24.5; ffap-guesser "stack overflow in regexp matcher" error may crash emacs.
Date: Sun, 08 Jan 2017 10:08:50 -0500 [thread overview]
Message-ID: <87y3yl1tdp.fsf@users.sourceforge.net> (raw)
In-Reply-To: <87vatqc8j1.fsf@gmail.com> (Thierry Volpiatto's message of "Sun, 08 Jan 2017 08:31:30 +0100")
Thierry Volpiatto <thierry.volpiatto@gmail.com> writes:
> Reproduce from emacs -Q:
>
> 1) require ffap.
> 2) Open a file of about 560k containing only one line, e.g
> "~/emacs.d/elpa/archives/archive-contents"
> 3) M-: (ffap-guesser)
>
> Debugger entered--Lisp error: (error "Variable binding depth exceeds max-specpdl-size")
> looking-at("^.*\\<\\(Type\\|Name\\|Path\\|Host\\|Port\\) *= *\\(.*\\) *$")
[...]
>
> This is reproductible from emacs-26 as well.
The max-specpdl-size error looks like #24751 (I was planning to push the
patch for that today), but as far as I know, that's only in emacs-26.
emacs-25 and earlier correctly throw "stack overflow in regexp matcher".
Unless you have REL_ALLOC enabled (which is the default for GNU/Linux
distributions with the latest glibc), in which case any buffer search
may crash emacs instead. That's #24358, occurs in 25.1 (and probably
earlier), but it's already fixed in the emacs-25 branch. Also fixable
by configuring with REL_ALLOC=no.
next prev parent reply other threads:[~2017-01-08 15:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-08 7:31 bug#25391: 24.5; ffap-guesser "stack overflow in regexp matcher" error may crash emacs Thierry Volpiatto
2017-01-08 15:08 ` npostavs [this message]
2017-01-08 17:28 ` Thierry Volpiatto
2017-01-08 23:29 ` npostavs
2017-01-09 7:00 ` Thierry Volpiatto
2017-01-10 4:37 ` npostavs
2017-01-10 7:17 ` Thierry Volpiatto
2017-01-10 13:37 ` npostavs
2017-01-10 14:42 ` Thierry Volpiatto
2017-01-14 2:25 ` npostavs
2017-01-14 6:57 ` npostavs
[not found] ` <874m12t57f.fsf@gmail.com>
2017-01-14 14:43 ` Noam Postavsky
[not found] ` <8737gltvw8.fsf@gmail.com>
2017-01-15 19:08 ` Noam Postavsky
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