Spurious error message in parametric type definition

[andreasnoack]

I get an error when writing the following definition

julia> immutable MyMatrix{T,S<:AbstractMatrix{T}} <: AbstractMatrix{T}
       A::S
       B::Vector{T}
       end
ERROR: T not defined

but the type seems well defined because

A=MyMatrix{Float64,Matrix{Float64}}(randn(2,2),randn(2));

works just fine.

[JeffBezanson]

This is actually a missing feature. Dup of #3766