Lightning Talk: sizeof((std::variant( double, char[10])) - Olivia Wasalski - CppNorth 2023

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Lightning Talk: What is the sizeof Function? - Olivia Wasalski - CppNorth 2023
What is the sizeof(std::variant double, char[10]), can it be optimized, and why does it matter?
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Slides: github.com/CppNorth/CppNorth_...
Sponsored By:
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JetBrains: www.jetbrains.com/
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Olivia Wasalski
Olivia Wasalski is a C++ developer at Safe Software Inc. She primarily works on computational geometry algorithms but enjoys packing bits in her spare time.
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[@abhinavk0929]

Even if we use the variant as presented in the talk, the type in last example would still have a size of 16, no? is there something i'm missing here?

[@neijiagongfu]

So basically std::aligned_storage/-_union which was deprecated in C++23.

[@szaszm_]

I bet we wouldn't have this problem if the committee didn't reject the first variant proposal, a language-based `enum union` with pattern matching.