返回函数指针数组

Question

I have two files main.c and foo.c, I am trying to copy an array of functions from one file to another.

My problem is: Only the first item is getting copied.

This is my code:

foo.c:

void foo1();
void foo2();
void foo3();
void foo4();
void foo5();
void foo6();
void foo7();

void (*myFuncs[7])() = {
    foo1,
    foo2,
    foo3,
    foo4,
    foo5,
    foo6,
    foo7
};

void* getMyFuncs(){
    return myFuncs;
}

main.c:

void (*things[7])();

void main(){
   memcpy(things, getMyFuncs(), sizeof(getMyFuncs()));
}

After running, in debug mode, I inspected my array things and only foo1 pointer has copied.

So, my output has:

void (*things[7])() = {
    foo1 (hex address here),
    0x00,
    0x00,
    0x00,
    0x00,
    0x00,
    0x00
};

What I expected:

void (*things[7])() = {
    foo1 (hex address here),
    foo2 (hex address here),
    foo3 (hex address here),
    foo4 (hex address here),
    foo5 (hex address here),
    foo6 (hex address here),
    foo7 (hex address here)
};

Why only the first item is getting copied?

Thanks

Answer 1

I found the solution, it was a silly mistake!

My line:

memcpy(things, getMyFuncs(), sizeof(getMyFuncs()));

is wrong, I don't want to copy the size of getMyFuncs().

The write way to copy is by getting the size of my array of functions:

memcpy(things, getMyFuncs(), sizeof(things));