pdftract/notes/bf-4ce3y.md

bf-4ce3y: Verify profile_yaml fuzz harness file exists and is valid

Task

Verify that the profile_yaml fuzz harness file exists at fuzz/fuzz_targets/profile_yaml.rs and has valid Rust syntax.

Findings

CRITICAL: The fuzz harness file does not exist.

What exists

• ✅ Corpus directory: fuzz/corpus/profile_yaml/ (empty)
• ✅ Plan reference: docs/plan/plan.md lists fuzz/profile_yaml/ as an expected target

What's missing

• ❌ Fuzz harness: fuzz/fuzz_targets/profile_yaml.rs does not exist
• ❌ Cargo.toml registration: No [[bin]] entry for profile_yaml in fuzz/Cargo.toml

Acceptance criteria status

• fuzz/fuzz_targets/profile_yaml.rs file exists - FAIL
• rustc syntax check passes without errors - FAIL (see output below)
• File contains proper harness function signature - FAIL (file doesn't exist)

rustc syntax check output

$ rustc --crate-type lib fuzz/fuzz_targets/profile_yaml.rs
error: couldn't read `fuzz/fuzz_targets/profile_yaml.rs`: No such file or directory (os error 2)
error: aborting due to 1 previous error

Result: Cannot check syntax of non-existent file. Error code: 1

Reference: Expected structure

Based on existing content.rs fuzz target:

#![no_main]
use libfuzzer_sys::fuzz_target;

fuzz_target!(|data: &[u8]| {
    // Fuzz logic here
});

And Cargo.toml registration:

[[bin]]
name = "profile_yaml"
path = "fuzz_targets/profile_yaml.rs"

Conclusion

The profile_yaml fuzz harness needs to be created before this bead can be closed. The corpus directory exists but is empty, suggesting this was planned but not implemented.