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Arthur O'Dwyer

quuxplusone.github.io

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Visit quuxplusone.github.io → On Hacker News Nov 2019 – Jul 2025

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Escape analysis hates copy elision (2021)

2023122 points53 commentsSoftware Engineering details

Yesterday Lauri Vasama showed me this awesome Godbolt: struct S { static std::unique_ptr<S> make() noexcept; ~S(); static std::unique_ptr<S> factory() { std::unique_ptr<S> s = S::make(); return M(s); } }; void take_ownership(S*) noexcept; void test() { std::unique_ptr<S> p = S::factory()…