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Lib0xc: A set of C standard library-adjacent APIs for safer systems programming

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Why This Matters

Lib0xc introduces a set of C library-adjacent APIs designed to enhance safety in systems programming by promoting static bounds checking and compatibility with bounds safety extensions. Its goal is to enable developers to write safer, more portable C code with minimal disruption, leveraging familiar APIs and strict warning enforcement. This initiative is significant as it addresses longstanding safety concerns in C, helping reduce bugs and vulnerabilities in critical software systems.

Key Takeaways

lib0xc

A set of C standard library-adjacent APIs for safer systems programming. While C cannot be made completely type- and bounds-safe at the language level, its prevailing uses can be made much safer than they are today.

Goals

"Make C safer" is a nebulous and amorphous goal, and it is more apt as a programming language design statement than a modest set of utilities. With that in mind, lib0xc has the following concrete goals.

That last one isn't real, but still, lib0xc's goal is to make it possible for projects to turn on as many warnings as possible and to fail to build if code introduces new warnings. Often, certain high-value warnings are disabled because a project wants to, e.g.

build with -Werror , and avoid clumsy workarounds for things like portability

Concerns like this are frontmost in lib0xc's API design.

Familiar, Easy to Adopt

lib0xc's APIs are deliberately named and designed to look like functions they'd replace from the standard library and be drop-in replacements where appropriate.

Embrace Static Bounds

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