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Aliasing Redefined

Lightningat C++Now 2019 · 2019-05-05..05-10· [compilers-and-language-design]
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Code that type-puns network buffers currently compiles to nothing but invokes undefined behavior; a zero‑code trick is shown that tells the compiler the pun is real but still breaks when mutating a read buffer and when enforcing const correctness. Proposed fixes mentioned include stood bit cast and an implicit object-creation paper called stood bless, but neither fully solves efficient multi-type access for generated handlers that must interpret the same large packet as many views without copying — unions blow up with 1.5 MB packets against 200 B messages.

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