4 ms·

I don't think Go lets you take stack addresses. If you try to do that, it will copy the data structure onto the heap.

• enneff 15y ago
  The compiler is free to optimize this how it sees fit. Taking the address of a value doesn't necessarily move it to the heap.
  • jganetsk 15y ago
    I imagine this optimization can only happen once escape analysis is performed. In the general case, address-of moves the data to the heap, or causes it to be stored on the heap in the first place. Correct?
    • enneff 15y ago
      Yes.