test_new_ffi_1.py 文件源码

def test_nested_anonymous_struct(self):
        # struct nested_anon {
        #     struct { int a, b; };
        #     union { int c, d; };
        # };
        assert ffi.sizeof("struct nested_anon") == 3 * SIZE_OF_INT
        p = ffi.new("struct nested_anon *", [1, 2, 3])
        assert p.a == 1
        assert p.b == 2
        assert p.c == 3
        assert p.d == 3
        p.d = 17
        assert p.c == 17
        p.b = 19
        assert p.a == 1
        assert p.b == 19
        assert p.c == 17
        assert p.d == 17
        p = ffi.new("struct nested_anon *", {'b': 12, 'd': 14})
        assert p.a == 0
        assert p.b == 12
        assert p.c == 14
        assert p.d == 14