内联函数 - C++中定义在类内的成员函数调用外部函数还是inline的吗？

Question

定义在类内部的成员函数都是自动inline的，那么如果成员函数里调用了外部的函数，会怎样呢？
会将这个外部函数也内联展开，还是执行压栈保护现场这些操作来调用这个外部函数呢？

Answer 1

Saying that a function is inline means that it will be expanded at the place where it is called (in other functions), rather than expanding calls to other functions within this function.