如果我将POD结构分配给另一个POD结构，是否存在内存泄漏？

Question

For example:

struct Vertex
{
  int x;
  int y;
};

Vertex makeVertex(int xpos, int ypos)
{
  Vertex tmp = {xpos, ypos};
  return tmp;
}

Would I get a memory leak if I did this?:

Vertex a = makeVertex(30,40);
a = makeVertex(5, 102);

Answer 1

This is perfectly safe.

Memory leaks are caused by (mis)using pointers and memory allocations (typically calls to new that aren't followed by calls to delete , but more complex cases are often where the real problems occur - eg not completing the "rule of three (or five)" when dealing with classes that have calls to new ).

And of course when using the C style calls to malloc and siblings the code should have a corresponding free call.