Hi,

I'm really confuse with this behaviour. I think I'm missing some
concept of memory management of ffi.

Let's imagine a C library with something like:

struct foo
{
    void *p;
};
void some_function( struct foo * in_parameter );

From ruby we are gonna create that struct before call the function,
with something similar to:

>> require 'ffi'

=> true

>> class Foo < FFI::Struct; layout :p, :pointer; end

=> #<FFI::StructLayout:0x1f0f0c8>

>> foo = Foo.new

=> #<Foo:0x1a15597>

>> foo[:p] = my_pointer = FFI::MemoryPointer.new(:int, 100)

=> #<MemoryPointer address=0xb3c06380 size=400>

>> foo[:p]

=> #<Pointer address=0xb3c06380>

>> my_pointer

=> #<MemoryPointer address=0xb3c06380 size=400>


I cannot free a Pointer (only MemoryPointer), so what should I do?
Create a free_struct_foo( void * p ); function in C? Ignore it because
I don't need to free that allocated memory or just hope no memory
leaks will happen?.

Regards.