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MICROSOFT RELEASES LIB0XC FOR SAFER C SYSTEMS PROGRAMMING

DEV DESK1 MIN READ
SAT, MAY 2, 2026

■ AI-SUMMARIZED FROM 1 SOURCE ▸ TIMELINE

Microsoft has open-sourced Lib0xc, a library providing C standard library-adjacent APIs designed to improve memory safety and reduce vulnerabilities in systems programming. The project offers safer alternatives to commonly used C functions.

Lib0xc addresses long-standing safety concerns in C systems programming by wrapping or replacing standard library functions with safer variants. The library targets developers working on performance-critical systems where memory safety is critical but languages like Rust aren't practical alternatives. Key features include bounds checking, overflow protection, and safer string handling—common sources of security vulnerabilities in C code. The project maintains API familiarity with standard C libraries to lower adoption friction. Hosted on GitHub under Microsoft's account, Lib0xc has garnered early interest from the developer community, with 107 points and 36 comments on Hacker News. The initiative reflects broader industry efforts to improve C's safety profile while preserving its performance characteristics, positioning it alongside similar projects like LLVM's safe C libraries and compiler-based mitigations.

■ SOURCES

Hacker News

■ SUMMARY WRITTEN BY AI FROM THE LINKS ABOVE

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