Philippe Gaultier • 11/6/2024

Perhaps Rust needs "defer"

This technical article explores the challenges of manual memory management in Rust, particularly when dealing with Foreign Function Interface (FFI) code. Using a concrete example of a Rust library leaking a vector to C, the author details multiple failed attempts to properly free memory and argues that a 'defer' construct (common in languages like Go) is needed to simplify resource cleanup and prevent subtle bugs in Rust's unsafe code blocks.

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#memory management #rust #borrow checker