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Nah, you missed the main point, it doesn't deal with exceptions. But since you misuse the downvote feature after I looked for the video and timestamp for you, I

• quietbritishjim 6y ago
  You can't downvote direct replies to your comments, you'll notice the downvote button is missing for you on this comment of mine. That must be someone(s) else. What do you mean by "it" in "it doesn't deal with exceptions"? Rust? Or the C++ snippet on the left hand side in the presentation with the shorter assembly output? Edit: Since I'm still apparently not clear on your main point, this might be irrelevant, but here [1] is a Godbolt link showing that Rust functions have similar panic-safe unwind code to the C++ exception unwind code shown in the presentation. Admittedly the Rust version does seem a bit shorter (comparing just the actual function, at the bottom of the Godbolt output) and I'm afraid I don't know enough assembly to be able to analyse the difference. But I think the principle is similar. [1] https://godbolt.org/z/K1xPr3 https://godbolt.org/z/K1xPr3