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Article · Through the layers
A Rust FFI Boundary Is More Than repr(C)
A tested Rust-and-C FFI boundary covering ABI layout, pointer validation, ownership, panics, error reporting, callbacks, versioning, and cross-language harnesses.
Posts tagged "unsafe Rust"
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Article · Through the layers
Rust Enum Niches: How Option<T> Can Cost No Extra Byte
Measured Rust enum layouts showing how invalid payload values encode Option discriminants, which optimizations are guaranteed, and what repr changes.- Published on
Article · Through the layers
Rust Strict Provenance: Why a Pointer Is More Than an Address
A Rust pointer carries an address and provenance. Learn addr, with_addr, map_addr, exposed provenance, and sound pointer-tagging patterns.- Published on
Article · Through the layers
PhantomData: Variance, Auto Traits, and Drop Check in One Type
PhantomData stores no value, yet changes variance, Send, Sync, ownership, and drop checking. Learn to choose a marker from the real contract.- Published on
Article · Through the layers
Structural Pinning in Rust: Which Fields Are Actually Pinned?
Pinning a Rust struct does not pin every field automatically. Learn structural pinning, safe projection, Drop obligations, and Future wrappers.