Show HN: C and C++ preprocessor for modern memory safety

A Next-Generation Memory-Safe Preprocessor for C & C++

Bringing modern memory safety and zero-configuration builds to classic C & C++.

cdefer draws inspiration from Zig & Golang, integrating their modern safety and simplicity features directly into C & C++ — while staying fully within the existing languages (no new language required).

cdefer is an open-source preprocessor and tooling layer for C & C++ with one core mission, make C & C++ memory-safe by default — without changing the language.

It enhances traditional compilation pipelines with automatic memory safety checks, build orchestration, and (soon) built-in package management. Unlike other approaches, cdefer does not require switching languages, runtimes, or toolchains.

• Enforces safe memory access patterns.
• No ghost allocation.
• Detects common vulnerabilities:
  • Buffer overflows
  • Use-after-free
  • Double free
  • Null dereferences
• Applies compile-time and runtime instrumentation.
• 100% compatible with standard C & C++ compilers.

• Automatic build system generation
• Detects source files intelligently.
• Configures compiler flags and output targets.
• Works across platforms (Linux, macOS, Windows).
• Zero external dependencies.

• Install libraries with a simple command.
• Resolves dependencies automatically.
• Versioning and reproducible builds.
• Future support for:
  • Remote repositories
  • Private registries
  • Precompiled binary packages

• This project is still in Alpha.

This project is licensed under the MIT | View License

Unless you explicitly state otherwise, any contribution intentionally submitted for this project by you, shall be licensed as MIT, without any additional terms or conditions.