c++ - Does reference variable occupy memory? -

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this question has answer here:

i have read reference variable shares same memory address original variable takes space on stack. , reference has same memory address original variable, known alias.

so, question how memory allocations done reference variables ?

8.3.2 references §4

it unspecified whether or not reference requires storage

that being said, if reference needs storage, typically needs storage pointer:

struct p {     int* p; };  struct r {     int& r; };  static_assert(sizeof(p) == sizeof(r), "sizeof(p) == sizeof(r)");

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