Simple code that won't compile

[ginophi]

My very simple test code

void main()
{
    struct test
    {
        int a;
    }

    int b = 1;
    test name[b];
}

doesn't compile and gives these errors:

test.d(9): Error: Integer constant expression expected instead of b
test.d(9): Error: Integer constant expression expected instead of
cast(uint)b
test.d(9): Error: Integer constant expression expected instead of
cast(uint)b
test.d(9): Error: Integer constant expression expected instead of
cast(uint)b

What am I doing wrong?