I have a Vector class which is modeled after std::vector. As such, it has front, back, popBack but no popFront method. DMD2.029 fails to compile foreach over the vector because it lacks popFront even though there are opApply overloads for it. Marking it as a regression since it used to compile with DMD2.028 although it used other primitive names. Here is a cut-down code to reproduce the problem:

module Vector;

public struct Vector(Type)
{
    private uint    _size = 0;
    private Type[]  _elements = null;

    uint length()
    {
        return _size;
    }

    bool empty()
    {
        return _size == 0;
    }

    void popBack()
    in
    {
        assert(_size >= 1);
    }
    body
    {
        --_size;
    }

    Type back()
    in
    {
        assert(!empty());
    }
    body
    {
        return _elements[_size-1];
    }

    Type front()
    in
    {
        assert(!empty());
    }
    body
    {
        return _elements[0];
    }

    int opApply(int delegate(ref Type value) dg)
    {
        for(uint i=0; i<_size; ++i)
        {
            int result = dg(_elements[i]);
            if( result != 0 ) {
                return result;
            }
        }

        return 0;
    }

    int opApply(int delegate(ref uint index, ref Type value) dg)
    {
        for(uint i=0; i<_size; ++i)
        {
            int result = dg(i, _elements[i]);
            if( result != 0 ) {
                return result;
            }
        }

        return 0;
    }
}

void main()
{
    Vector!(int) v;
    foreach (int i; v) {
        // do nothing
    }
}