Find size of a function in C

Question

I am learning function pointers,I understand that we can point to functions using function pointers.Then I assume that they stay in memory.Do they stay in stack or heap?Can

Answer 1

As has been said above, function sizes are generated by the compiler at compile time, and all sizes are known to the linker at link time. If you absolutely have to, you can make the linker kick out a map file containing the starting address, the size, and of course the name. You can then parse this at runtime in your code. But I don't think there's a portable, reliable way to calculate them at runtime without overstepping the bounds of C.

The linux kernel makes similar use of this for run-time profiling.