cargo-llvm-cov

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  "desc": "Cargo subcommand to easily use LLVM source-based code coverage",
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  "enrichment_fetched_at": "2026-06-20T23:36:09+00:00",
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  "github_last_commit_at": "2026-06-03T16:33:44Z",
  "github_readme_excerpt": "# cargo-llvm-cov\n\n[![crates.io](https://img.shields.io/crates/v/cargo-llvm-cov?style=flat-square\u0026logo=rust)](https://crates.io/crates/cargo-llvm-cov)\n[![license](https://img.shields.io/badge/license-Apache--2.0_OR_MIT-blue?style=flat-square)](#license)\n[![github actions](https://img.shields.io/github/actions/workflow/status/taiki-e/cargo-llvm-cov/ci.yml?branch=main\u0026style=flat-square\u0026logo=github)](https://github.com/taiki-e/cargo-llvm-cov/actions)\n\nCargo subcommand to easily use LLVM source-based code coverage.\n\nThis is a wrapper around rustc [`-C instrument-coverage`][instrument-coverage] and provides:\n\n- Generate very precise coverage data. (line, region, and branch coverage. branch coverage is currently optional and requires nightly, see [#8] for more)\n- Support `cargo test`, `cargo run`, and [`cargo nextest`][nextest] with command-line interface compatible with cargo.\n- Support for proc-macro, including coverage of UI tests ([trybuild](https://github.com/dtolnay/trybuild), [ui_test](https://github.com/oli-obk/ui_test)).\n- Support for doc tests. (this is currently optional and requires nightly, see [#2] for more)\n- Fast because it only instrument necessary crates and does not introduce extra layers between rustc, cargo, and llvm-tools.\n\n**Table of Contents:**\n\n- [Usage](#usage)\n  - [Basic usage](#basic-usage)\n  - [Merge coverages generated under different test conditions](#merge-coverages-generated-under-different-test-conditions)\n  - [Get coverage of C/C++ code linked to Rust library/binary](#get-coverage-of-cc-code-linked-to-rust-librarybinary)\n  - [Get coverage of external tests](#get-coverage-of-external-tests)\n  - [Get coverage of AFL fuzzers](#get-coverage-of-afl-fuzzers)\n  - [Exclude file from coverage](#exclude-file-from-coverage)\n  - [Exclude code from coverage](#exclude-code-from-coverage)\n  - [Platform Support](#platform-support)\n    - [Windows](#windows)\n    - [WASM](#wasm)\n  - [Continuous Integration](#continuous-integration)\n    - [GitHub Actions and",
  "github_repo": "taiki-e/cargo-llvm-cov",
  "github_stars": 1405,
  "github_topics": [
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  "license": "Apache-2.0 OR MIT",
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  "name": "cargo-llvm-cov",
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  "ruby_source_path": "Formula/c/cargo-llvm-cov.rb",
  "tap": "homebrew/core",
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  "version_head": "HEAD",
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