March 2026: Delivered a critical fix to ferrocene/ferrocene that stabilizes Rust stdlib behavior on VxWorks. By adding version-specific conditional compilation to handle VxWorks < 25.9, the patch resolves build failures and ensures correct file system operations across targeted platforms. The change, implemented in a single commit, improves cross-platform reliability and accelerates release readiness.

Concise monthly summary for 2026-02 focusing on VxWorks compatibility enhancements across libc in rust-lang/libc and the VxWorks Compatibility Layer in ferrocene/ferrocene. The work strengthens embedded systems readiness, aligns cross-repo definitions, and reduces integration friction for VxWorks targets.

October 2025—the primary milestone was delivering VxWorks OS support for rust-lang/libc. This included adding necessary defines and FFI functions, version-based conditional compilation, and VxWorks-specific structures and constants to enable proper system calls and operations. The change expands the libc crate’s platform coverage, enabling Rust projects to target VxWorks RTOS without custom workarounds. No explicit major bug fixes were documented for this period in the provided data; the focus was on platform enablement and API readiness to support downstream RTOS customers.