Unbug – Rust macros for programmatically invoking breakpoints
This project is inspired by some of the asserts in Unreal engine. Due to reliance on core_intrinsics it is necessary to develop using nightly Rust, but there are stubs in place so a production build will not require nightly. I recently released version 0.2 which includes no_std support and adds optional log message arguments to the ensure macro.
In plain words
Unbug provides Rust macros that programmatically invoke breakpoints during development, inspired by Unreal Engine's assertion system. Developers can use nightly Rust for development while production builds work with stable Rust through provided stubs. Version 0.2 adds no_std support and optional log message arguments to the ensure macro, making it suitable for debugging in both standard and embedded Rust environments.
written from the facts on this page · September 2026
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