immunant/c2rust

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

4794 stars · 312 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

C2Rust is a transpiler that converts C99-compliant C code into semantically equivalent but unsafe, unidiomatic Rust code, preserving functionality so existing test suites continue to pass. It includes additional tooling for refactoring, LLM-assisted postprocessing, and cross-checking translated code against the original as part of a longer migration workflow.

Use cases

• translate a C99 codebase to Rust
• migrate legacy C projects to Rust for memory safety
• convert C modules into compilable Rust source files
• cross-check translated Rust against original C behavior
• bootstrap a C-to-Rust migration before manual or LLM-driven cleanup

When to choose

• you need an automated first step for migrating C99 code to Rust
• you want to preserve functionality and keep existing tests passing during translation
• you need tooling to refactor or postprocess generated unsafe Rust

When to avoid

• you expect safe, idiomatic Rust output without further work
• your C code relies on non-C99 extensions or platform-specific behavior
• you need a fully automated one-click conversion with no manual follow-up

Facets

cli-tool · maturity active

compiler parser developer-tools security developer-tools programming-languages security cli rust transpiler c-to-rust memory-safety code-migration c99 refactoring cross-checking automation linux macos

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