GNU bug report logs - #34373
26.1; Missing range check in rx-submatch-n

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Package: emacs;

Reported by: Mattias Engdegård <mattiase <at> acm.org>

Date: Thu, 7 Feb 2019 18:03:02 UTC

Severity: minor

Tags: patch

Found in version 26.1

Done: Mattias Engdegård <mattiase <at> acm.org>

Bug is archived. No further changes may be made.

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From: Mattias Engdegård <mattiase <at> acm.org>
To: 34373 <at> debbugs.gnu.org
Subject: bug#34373: 26.1; Missing range check in rx-submatch-n
Date: Thu, 7 Feb 2019 19:01:33 +0100

`rx' should protect its own abstractions and never generate an invalid regexp, but will if given a bad submatch number:

(rx (group-n 0 "x"))
=> "\\(?0:x\\)"

It's a missing range check in rx-submatch-n.

In GNU Emacs 26.1 (build 1, x86_64-apple-darwin14.5.0, NS appkit-1348.17 Version 10.10.5 (Build 14F2511))
 of 2018-05-31 built on builder10-10.porkrind.org
Windowing system distributor 'Apple', version 10.3.1671
This bug report was last modified 6 years and 24 days ago.

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