Suppose I have the following C code:

void freeSomeType(SomeType_t **ptr)
{
    free(*ptr);
    *ptr = NULL;
}

void func(SomeType_t **ptr)
{
    freeSomeType(ptr);
    *ptr = malloc(...);
}

Then, suppose I call it from python land like so:

ptr = ffi.new("SomeType_t **")

# Init and do stuff with ptr...

lib.func(ptr)

In essence, the pointer holding the actual SomeType ** data inside the ptr‘s cdata object has changed its value. What happens if I then do:

lib.freeSomeType(ptr)
del ptr

• Is this safe to do?
• Do I need to worry about data ownership or memory leaks?