Fix for ancient reference-counting bug in NFA.cc

Description

The attached patch fixes a 19 year old reference-counting bug (which could lead to a use-after-free, not merely a leak) in the regular expression code. This was un-fun to find!

Environment

None

Status

Assignee

Johanna Amann

Reporter

Vern Paxson

Labels

None

External issue ID

None

Components

Priority

Normal
Configure