feat(fuzz): add grep_fuzz target for ReDoS prevention#1148
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Closes #1099 — Fuzz target for the grep builtin to detect catastrophic backtracking (ReDoS) in regex patterns. Tests basic, extended (-E), case-insensitive (-in), and inverted match (-vc) modes.
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Summary
grepbuiltin to detect catastrophic backtracking (ReDoS)-E), case-insensitive (-in), and inverted match (-vc) modesCloses #1099
Test plan
cargo checkin fuzz crate passescargo fmt --checkcleancargo clippyclean