Subject: assertion error in pop_fail_stack
From: Hanno Böck <[email-masked]>
To: [email-masked]
Date: Fri, 18 Sep 2015 18:37:57 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

Hi,

This command
grep -E '0|()0|\1|0'
will cause an assert error:
grep: regexec.c:1401: pop_fail_stack: Assertion `num >= 0' failed.

Happens both in the latest release (2.21) and the latest git code.

(this was found with american fuzzy lop)

cu,
-- 
Hanno Böck
http://hboeck.de/

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