Created attachment 182238 [details] svn(1) diff of mail/spmfilter Hello! In EREs, left-brace is not to be interpreted as an ordinary character unless escaped. Using an unescaped left-brace as part of an invalid repetition specification is undefined behavior. Attached is a patch to escape one instance of such undefined behavior usage to fix inconsistency in how we treat them between BREs and EREs. This was discovered as part of the exp-run in PR 218495. Thanks, Kyle Evans
A commit references this bug: Author: bapt Date: Thu May 25 20:12:32 UTC 2017 New revision: 441714 URL: https://svnweb.freebsd.org/changeset/ports/441714 Log: In EREs, left-brace is not to be interpreted as an ordinary character unless escaped. Using an unescaped left-brace as part of an invalid repetition specification is undefined behavior. PR: 219009 Submitted by: Kyle Evans <bsdports@kyle-evans.net> Approved by: maintainer timeout (3 weeks) Changes: head/mail/spmfilter/Makefile