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pdftract/notes/bf-2pq5z.md
jedarden f51a96cc8f docs(bf-2pq5z): document fuzz dependency verification findings 
Verified fuzz infrastructure dependencies:
- PASS: cargo-fuzz 0.13.1 installed
- PASS: Rust nightly 1.98.0 toolchain supports fuzzing
- PASS: fuzz/fuzz_targets/ directory exists with 5 working targets
- FAIL: content.rs fuzz target does not exist (critical dependency issue)

Parent beads (bf-2mzuw, bf-2g0kn) reference non-existent 'content' fuzz target.
Available targets: lexer, object_parser, xref, stream_decoder, cmap_parser.

Closes bf-2pq5z
2026-07-05 13:13:51 -04:00

2.7 KiB
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Fuzz Dependency Verification - bf-2pq5z

Task

Verify fuzz dependencies are installed for the content.rs fuzz harness.

Findings

✅ PASS: cargo-fuzz Installation

  • Status: Installed and working
  • Version: cargo-fuzz 0.13.1
  • Command: cargo fuzz --version succeeded

✅ PASS: Rust Toolchain

  • Status: Supports fuzzing
  • Version: rustc 1.98.0-nightly (f20a92ec0 2026-06-07)
  • Cargo: 1.98.0-nightly (0b1123a48 2026-06-01)

✅ PASS: Fuzz Harness Directory

  • Status: Directory exists and contains fuzz targets
  • Location: fuzz/fuzz_targets/
  • Available targets: 5 fuzz targets found
    • cmap_parser.rs
    • lexer.rs
    • object_parser.rs
    • stream_decoder.rs
    • xref.rs

❌ FAIL: content.rs Fuzz Target

  • Status: NOT FOUND
  • Expected: fuzz/fuzz_targets/content.rs
  • Found: The file does not exist
  • Verified by: test -f fuzz/fuzz_targets/content.rs returned false

Critical Issue

The parent beads (bf-2mzuw, bf-2g0kn) reference a non-existent content fuzz target:

  1. bf-2mzuw (closed) claims to verify "the content.rs fuzz harness compiles" with command cargo fuzz build content
  2. bf-2g0kn (in_progress) expects to run cargo fuzz run content -- -max_total_time=5
  3. fuzz/Cargo.toml defines 5 fuzz targets but NO content target

This is a dependency chain inconsistency. The content.rs fuzz target was never created, but dependent beads were written as if it existed.

Available Fuzz Targets

The actual fuzz infrastructure includes these working targets:

  • lexer - PDF lexer fuzzing
  • object_parser - PDF object parsing fuzzing
  • xref - Cross-reference table fuzzing
  • stream_decoder - PDF stream decoding fuzzing
  • cmap_parser - Character map parsing fuzzing

Recommendation

Before running fuzz tests (bf-2g0kn), the dependency chain needs resolution:

  1. Either create the missing content.rs fuzz target, OR
  2. Update dependent beads to reference existing fuzz targets

Acceptance Criteria Status

Criterion Status Result
cargo fuzz --version succeeds ✅ PASS Version 0.13.1
fuzz/fuzz_targets/content.rs exists ❌ FAIL File NOT found
No missing dependency errors ⚠️ WARN Missing target itself

Conclusion

Fuzz dependencies (cargo-fuzz, Rust toolchain, harness infrastructure) are properly installed and working. However, the specific content.rs fuzz target referenced by this bead and its parent does not exist in the codebase.

Note: This verification exposes a pre-existing dependency chain issue that existed before this bead started. The parent bead (bf-2mzuw) was incorrectly closed despite the content.rs target not existing.