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smitherfield
on Aug 2, 2017
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Rust: Not So Great For Codec Implementing
The bigger reason it's still undefined is to enable this type of optimization:
https://news.ycombinator.com/item?id=14857316
jandrese
on Aug 2, 2017
[–]
The comment thread seems to suggest that even if you define the behavior you can still optimize that case, and in fact Clang does.
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