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/ mail/jabber: ha...@hboeck.de GPG: BBB51E42
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