I had a C struct like this:

    struct Foo
    {
        int data[4];
    };

The straightforward vapi was

-------- bug-vapi.vapi ---------
    [SimpleType]
    [CCode(has_copy_function = false, has_destroy_function = false)]
    struct Foo
    {
        public int data[4];
        public Foo();
    }
--------------------------------

and it was used simply:

----------- bug.vala -----------
    void main()
    {
        var foo = Foo();
    }
--------------------------------

Worked in 0.8, but in 0.10 ...
    $ valac --vapidir . --pkg bug-vapi bug.vala -C
    $ cat bug.c
    ...
    static void foo_destroy (Foo* self) {
    }


    void _vala_main (void) {
            Foo foo;
            foo = foo_init ();
            foo_destroy (foo);
    }
    ...

This doesn't compile (foo_destroy needs a pointer).
Anyway, I'm labeling this as a minor bug because it seems the correct way was
    public int *data;