Is it safe to return a struct in C or C++?

Question

What I understand is that this shouldn\'t be done, but I believe I\'ve seen examples that do something like this (note code is not necessarily syntactically correct but the

Answer 1

I will also agree with sftrabbit , Life indeed ends and stack area gets cleared up but the compiler is smart enough to ensure that all the data should be retrieved in registers or someother way.

A simple example for confirmation is given below.(taken from Mingw compiler assembly)

_func:
    push    ebp
    mov ebp, esp
    sub esp, 16
    mov eax, DWORD PTR [ebp+8]
    mov DWORD PTR [ebp-8], eax
    mov eax, DWORD PTR [ebp+12]
    mov DWORD PTR [ebp-4], eax
    mov eax, DWORD PTR [ebp-8]
    mov edx, DWORD PTR [ebp-4]
    leave
    ret

You can see that the value of b has been transmitted through edx. while the default eax contains value for a.