Compile error on keyword override

[valmat]

I don't sure that is an error, but i had got error with this example:

struct Derived1 : Base
{
    virtual int foo(int n) override
        [[expects: n < 10]]
        [[ensures r: r > 100]]
    {
        return n*n;
    }
};

error: expected ';' at end of declaration list
    virtual int foo(int n) override
                                   ^
                                   ;

If kw override moved after contract attributes no error appears:

struct Derived1 : Base
{
    virtual int foo(int n)
        [[expects: n < 10]]
        [[ensures r: r > 100]]
    override
    {
        return n*n;
    }
};