Is `&mut T -> &mut ManuallyDrop<T>` well-defined and sound?

· Users Rust Lang · May 7, 2026, 4:20 a.m.
Rust Programming Memory Safety ManuallyDrop Mutable References
Summary
The blog post raises a question about the soundness and usefulness of a Rust programming concept—transforming a mutable reference to a type into a mutable reference of `ManuallyDrop`. The author expresses skepticism about its practical utility, asking for an example use case to demonstrate its relevance.
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