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I think you're referring to this one: https://blog.tchatzigiannakis.com/undefined-behavior-can-lit...

Bonus read: https://devblogs.microsoft.com/oldnewthing/20140627-00/?p=63...

Thanks for the link! I think I had in mind another one, where the UB fuckery happened at a lower level (I think you ended up with a semicolon/brace effectively "disappearing"?). But that's a good example too.

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