### Install Dependencies and Target

Source: https://github.com/rust-bitcoin/rust-miniscript/blob/master/embedded/README.md

Installs necessary dependencies and the target architecture for embedded development.

```shell
sudo ./scripts/install-deps
rustup target add thumbv7m-none-eabi
```

--------------------------------

### Setup Nix Shell for Fuzzing

Source: https://github.com/rust-bitcoin/rust-miniscript/blob/master/fuzz/README.md

Configure the Nix shell with specific versions of libraries required by honggfuzz and disable conflicting hardening flags.

```bash
nix-shell -p libopcodes_2_38 -p libunwind
# In the nix-shell run these
NIX_HARDENING_ENABLE=''${NIX_HARDENING_ENABLE/fortify/}
NIX_HARDENING_ENABLE=''${NIX_HARDENING_ENABLE/fortify3/}
```

--------------------------------

### List All Fuzz Targets

Source: https://github.com/rust-bitcoin/rust-miniscript/blob/master/fuzz/README.md

Source the utility script and call `listTargetNames` to get a comprehensive list of all available fuzzing targets.

```bash
source ./fuzz-util.sh
listTargetNames
```

--------------------------------

### Expected Output of Embedded Test

Source: https://github.com/rust-bitcoin/rust-miniscript/blob/master/embedded/README.md

Example output from a successful embedded test run, showing heap size, descriptor, and P2SH address.

```text
heap size 1048576
descriptor sh(wsh(or_d(c:pk_k(020e0338c96a8870479f2396c373cc7696ba124e8635d41b0ea581112b67817261),c:pk_k(0250863ad64a87ae8a2fe83c1af1a8403cb53f53e486d8511dad8a04887e5b2352))))
p2sh address 3CJxbQBfWAe1ZkKiGQNEYrioV73ZwvBWns
```

--------------------------------

### Run Basic Fuzz Tests

Source: https://github.com/rust-bitcoin/rust-miniscript/blob/master/fuzz/README.md

Execute the fuzzing harness to briefly test all targets. Ensure you are in the fuzzing directory.

```bash
./fuzz.sh
```

--------------------------------

### Run All Fuzz Targets Sequentially

Source: https://github.com/rust-bitcoin/rust-miniscript/blob/master/fuzz/README.md

Execute the `cycle.sh` script to run each fuzz target for an hour. This script uses `chrt` to manage job priorities.

```bash
./cycle.sh
```

--------------------------------

### Run a Specific Fuzz Target

Source: https://github.com/rust-bitcoin/rust-miniscript/blob/master/fuzz/README.md

After adding a new fuzz test and regenerating files, use this command to test your specific fuzz target.

```bash
./fuzz.sh <target>
```

--------------------------------

### Fuzz with Weak Cryptography

Source: https://github.com/rust-bitcoin/rust-miniscript/blob/master/fuzz/README.md

Compile and run fuzzing scripts with specific RUSTFLAGS to replace standard hashing and secp256k1 libraries with broken versions for faster fuzzing. Never use these flags for real code.

```bash
RUSTFLAGS="--cfg=hashes_fuzz --cfg=secp256k1_fuzz"
```

--------------------------------

### Run Embedded Test

Source: https://github.com/rust-bitcoin/rust-miniscript/blob/master/embedded/README.md

Executes the embedded test using cargo with the specified target.

```shell
source ./scripts/env.sh && cargo run +nightly --target thumbv7m-none-eabi
```

--------------------------------

### Run a Single Fuzz Test Indefinitely

Source: https://github.com/rust-bitcoin/rust-miniscript/blob/master/fuzz/README.md

Use `cargo hfuzz run` to execute a specific fuzz test target continuously until manually stopped.

```bash
cargo hfuzz run <target>
```

--------------------------------

### Reproduce Crash with Hex Input

Source: https://github.com/rust-bitcoin/rust-miniscript/blob/master/fuzz/README.md

Add a `duplicate_crash` test function to your code, pasting the hex-encoded crash input into `extend_vec_from_hex`. Then run `cargo test`.

```rust
#[cfg(test)]
mod tests {
    use miniscript::bitcoin::hex::FromHex;

    #[test]
    fn duplicate_crash() {
        let v = Vec::from_hex("abcd").unwrap();
        super::do_test(&v);
    }
}
```

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