4 ms·

wow, can you elaborate how adding a string field can break some assumptions?

• nneonneo 10mo ago
  Not the OP, but note that adding a std::string to a POD type makes it non-POD. If you were doing something like using malloc() to make the struct (not recommended in C++!), then suddenly your std::string is uninitialized, and touching that object will be instant UB. Uninitialized primitives are benign unless read, but uninitialized objects are extremely dangerous.
  • IshKebab 10mo ago
    That's not what was happening in this example though. It would be UB even if it was a POD.