Chris Wellons 9/30/2025

More speculations on arenas in C++

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The article delves into C++ arena allocation, discussing object lifetime semantics and how common C-style memory management can be ill-formed in C++. It references C++20 exceptions and new features like start_lifetime_as, analyzing a custom arena allocator implementation and identifying subtle issues with pointer provenance and placement new.

More speculations on arenas in C++

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