---
license: other
license_name: inria-non-commercial
license_link: https://github.com/AbsInt/CompCert/blob/master/LICENSE
task_categories:
  - text-generation
  - feature-extraction
language:
  - en
tags:
  - theorem-proving
  - formal-methods
  - coq
  - compcert
  - compiler-verification
  - c-compiler
size_categories:
  - 10K<n<100K
dataset_info:
  features:
  - {name: statement, dtype: string}
  - {name: proof, dtype: string}
  - {name: type, dtype: string}
  - {name: symbolic_name, dtype: string}
  - {name: library, dtype: string}
  - {name: filename, dtype: string}
  - {name: imports, list: string}
  - {name: deps, list: string}
  - {name: docstring, dtype: string}
  - {name: source_url, dtype: string}
  - {name: commit, dtype: string}
  splits:
  - {name: train, num_examples: 11014}
  config_name: default
configs:
- config_name: default
  data_files:
  - split: train
    path: data/train-*
---

# Coq-CompCert

A structured dataset of formalizations from **CompCert**, the verified C compiler.

## Source

- Repository: https://github.com/AbsInt/CompCert
- Commit: `0ef26dad76446c803da02d7368eb4f9d074c1401`
- Files: 222
- License: other

## Schema

| Column | Type | Description |
|--------|------|-------------|
| statement | string | Declaration signature/claim with the leading keyword removed (verbatim slice); the full declaration minus its proof |
| proof | string | Verbatim proof/body, empty if the declaration has none |
| type | string | Declaration keyword |
| symbolic_name | string | Declaration identifier |
| library | string | Sub-library |
| filename | string | Repository-relative source path |
| imports | list[string] | File-level `Require`/`Import` modules |
| deps | list[string] | Intra-corpus identifiers referenced |
| docstring | string | Preceding documentation comment, empty if absent |
| source_url | string | Upstream repository |
| commit | string | Upstream commit extracted |

## Statistics

- Entries: 11,014
- With proof: 10,392 (94.4%)
- With docstring: 2,240 (20.3%)
- Libraries: 14

### By type

| Type | Count |
|---|---|
| Lemma | 4,173 |
| Definition | 3,043 |
| Theorem | 1,252 |
| Inductive | 534 |
| Remark | 490 |
| Fixpoint | 347 |
| Axiom | 268 |
| Hypothesis | 206 |
| Parameter | 134 |
| Ltac | 116 |
| Record | 84 |
| Notation | 78 |
| Instance | 68 |
| Let | 59 |
| Corollary | 46 |
| Function | 40 |
| Scheme | 17 |
| CoInductive | 17 |
| Coercion | 13 |
| Proposition | 13 |
| Class | 11 |
| CoFixpoint | 2 |
| Structure | 1 |
| Canonical | 1 |
| Parameters | 1 |

## Example

```
splitlong_ptr32: splitlong = true -> ptr64 = false.
Proof.
  unfold splitlong, ptr64; congruence.
Qed.
```

- type: Lemma | symbolic_name: `splitlong_ptr32` | aarch64/Archi.v

## Use

Each declaration is split into a `statement` (signature/claim) and a `proof` (body) that are disjoint
and together form the complete declaration, for proof modeling, autoformalization, retrieval, and
dependency analysis via `deps`.

## Citation

```bibtex
@misc{coq_compcert_dataset,
  title  = {Coq-CompCert},
  author = {Norton, Charles},
  year   = {2026},
  note   = {Extracted from https://github.com/AbsInt/CompCert, commit 0ef26dad7644},
  url    = {https://huggingface.co/datasets/phanerozoic/Coq-CompCert}
}
```