Individual skill

fuzzing-coverage-analysis

Use when a user needs to measure fuzz corpus coverage, explain a coverage plateau, or turn uncovered regions into campaign work. Not for harness creation: use fuzz-harness-writing.

.devin/skills/fuzzing-coverage-analysis/SKILL.md

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# Fuzzing coverage analysis

## Contract

| Field | Bound contract |
|---|---|
| Trigger | User needs to measure a fuzz corpus, explain a coverage plateau, or turn uncovered regions into campaign work. |
| Authority | Reversible local: writes only coverage profiles, reports, and temporary instrumented binaries under a single named target directory for one fuzz target; rollback is deleting the generated profiles, report directory, and temporary binaries. No remote mutation. No VCS mutation. |
| Side effect | Coverage profiles (`.profraw`, `.profdata`, `.gcda`) and a coverage report (text and HTML) written under the target directory for the named fuzz target. |
| Done | A reproducible coverage report excludes harness noise and identifies concrete reachable or blocked regions. |

## Not for

- Harness creation or improvement: use fuzz-harness-writing.