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bug#22146: Stack overflow in reftex-parse-all

From: David Kastrup
Subject: bug#22146: Stack overflow in reftex-parse-all
Date: Sun, 13 Dec 2015 18:52:48 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux)

Tassilo Horn <address@hidden> writes:

> Mosè Giordano <address@hidden> writes:

> Isn't the syntax "\\[[^]]\\{0,1000\\}\\<label"?  I tried going up to a
> maximum of 30000 and it still didn't overflow, so I think that's an
> appropriate fix (say, maybe 2000 instead of 1000 to be extra safe).
> Feel free to change `reftex-label-regexps' accordingly.
> Interestingly, "x\\{0,40000\\}" gives an error:
>   (invalid-regexp "Invalid content of \\{\\}")
> So there seems to be a (pretty random) limit...

I'd guess that the regexp library translates this into a "short", so the
limit would be SHORT_MAX, namely 32767.

David Kastrup

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