What problem does it solve?
Fuzzing obstacles block coverage during fuzz testing. This technique patches code to bypass non-deterministic checks and state while preserving production behavior, enabling deeper exploration of code paths.
Core Features & Use Cases
- Bypass checks during fuzzing: Temporarily relaxes checks like checksums or time-based seeds only in fuzzing builds.
- Deterministic fuzzing scaffolding: Ensures reproducibility by seeding PRNGs and stabilizing non-deterministic behavior for fuzz runs.
- Targeted validation bypass: Skips expensive multi-step validation during fuzzing with safe defaults to maintain downstream compatibility.
Quick Start
Identify an obstacle that blocks fuzzing progress (for example a checksum verification). Patch it with a conditional compilation guard that enables the obstacle bypass only in fuzzing builds. Rebuild the fuzzing target and run the fuzzer to confirm deeper coverage.