Rust 1.99.0 stabilizes APIs and expands C support
Released on October 1, 2026, Rust 1.99.0 adds support for variadic extern “C” functions, functions to query raw-pointer size and alignment, and several stabilized APIs.
Source: Rust 1.99.0 é lançado (lwn.net). Text prepared with AI from this source.
What happened and what to do
According to the LWN article, published on October 1, 2026, Rust 1.99.0 includes support for variadic extern “C” functions, functions to obtain the size and alignment of raw pointers, and several stabilized APIs. The release also includes other changes.
Companies with Rust systems can map dependencies and C integrations, assess the impact of the update, and run compatibility and security tests before adopting it. A version-monitoring pipeline with alerts can support this process without requiring an AI application.
How the consultancy can help
Wendelmaques can diagnose how Rust systems are exposed to version changes, define an upgrade scope, and implement tests, monitoring, and operation of the adoption process.
Next step
Send a brief description of your Rust systems and integration points; Wendelmaques will assess the case and prepare a scoped proposal.
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