b5fc583c27
Previously, when given a negative -A/-B/-C argument bsdgrep would overflow the respective context flag(s) and exhibited surprising behavior. Fix this by removing unsignedness of Aflag/Bflag and erroring out if we're given a value < 0. Also adjust the type used to track 'tail' context in procfile() so that it accurately reflects the Aflag value rather than overflowing and losing trailing context. This also fixes an inconsistency previously existing between -n and -C "n" behavior. They are now both limited to LLONG_MAX, to be consistent. Add some test cases to make sure grep errors out properly for both negative context values as well as non-numeric context values rather than giving bogus matches. Submitted by: Kyle Evans <kevans91@ksu.edu> Reviewed by: cem Differential Revision: https://reviews.freebsd.org/D10675 |
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