Limbo Fuzzing

Prerequisites

Ensure you have the following installed:

• Nightly Rust toolchain (required for cargo-fuzz unless using Nix)
• cargo-fuzz (install it using cargo install cargo-fuzz)
• Nix (if using a flake.nix setup)

Using Nix

nix develop .#fuzz

This will set up the required environment with the nightly toolchain and dependencies.

Running the Fuzzer

If using Nix:

cargo fuzz run <fuzz_target>

If using rustup without Nix:

cargo +nightly fuzz run <fuzz_target>

This will compile the fuzz target and start fuzzing with libFuzzer.

Example

Run the expression target with:

cargo fuzz run expression