diff --git a/src/linalg.jl b/src/linalg.jl
index 04095dfc..7e9ddc4c 100644
--- a/src/linalg.jl
+++ b/src/linalg.jl
@@ -641,7 +641,7 @@ const WrapperMatrixTypes{T,MT} = Union{
     Hermitian{T,MT},
 }
 
-function dot(A::Union{DenseMatrixUnion,WrapperMatrixTypes{<:Any,Union{DenseMatrixUnion,AbstractSparseMatrix}}}, B::AbstractSparseMatrixCSC)
+function dot(A::Union{DenseMatrixUnion,WrapperMatrixTypes{<:Any,<:Union{DenseMatrixUnion,AbstractSparseMatrix}}}, B::AbstractSparseMatrixCSC)
     T = promote_type(eltype(A), eltype(B))
     (m, n) = size(A)
     if (m, n) != size(B)
@@ -663,7 +663,7 @@ function dot(A::Union{DenseMatrixUnion,WrapperMatrixTypes{<:Any,Union{DenseMatri
     return s
 end
 
-function dot(A::AbstractSparseMatrixCSC, B::Union{DenseMatrixUnion,WrapperMatrixTypes{<:Any,Union{DenseMatrixUnion,AbstractSparseMatrix}}})
+function dot(A::AbstractSparseMatrixCSC, B::Union{DenseMatrixUnion,WrapperMatrixTypes{<:Any,<:Union{DenseMatrixUnion,AbstractSparseMatrix}}})
     return conj(dot(B, A))
 end
 
@@ -1210,7 +1210,7 @@ function nzrangelo(A, i, excl=false)
     @inbounds r2 < r1 || rv[r1] >= i + excl ? r : (searchsortedfirst(view(rv, r1:r2), i + excl) + r1-1):r2
 end
 
-dot(x::AbstractVector, A::RealHermSymComplexHerm{<:Any,<:AbstractSparseMatrixCSC}, y::AbstractVector) =
+dot(x::AbstractVector, A::RealHermSymComplexHerm{<:Real,<:AbstractSparseMatrixCSC}, y::AbstractVector) =
     _dot(x, parent(A), y, A.uplo == 'U' ? nzrangeup : nzrangelo, A isa Symmetric ? identity : real, A isa Symmetric ? transpose : adjoint)
 function _dot(x::AbstractVector, A::AbstractSparseMatrixCSC, y::AbstractVector, rangefun::Function, diagop::Function, odiagop::Function)
     require_one_based_indexing(x, y)
@@ -1242,7 +1242,7 @@ function _dot(x::AbstractVector, A::AbstractSparseMatrixCSC, y::AbstractVector,
     end
     return r
 end
-dot(x::SparseVector, A::RealHermSymComplexHerm{<:Any,<:AbstractSparseMatrixCSC}, y::SparseVector) =
+dot(x::SparseVector, A::RealHermSymComplexHerm{<:Real,<:AbstractSparseMatrixCSC}, y::SparseVector) =
     _dot(x, parent(A), y, A.uplo == 'U' ? nzrangeup : nzrangelo, A isa Symmetric ? identity : real)
 function _dot(x::SparseVector, A::AbstractSparseMatrixCSC, y::SparseVector, rangefun::Function, diagop::Function)
     m, n = size(A)
@@ -1577,7 +1577,7 @@ function cond(A::AbstractSparseMatrixCSC, p::Real=2)
         normA = opnorm(A, Inf)
         return normA * normAinv
     elseif p == 2
-        throw(ArgumentError("2-norm condition number is not implemented for sparse matrices, try cond(Array(A), 2) instead"))
+        throw(ArgumentError("only 1- and Inf-norm condition numbers are implemented for sparse matrices, for 2-norm try cond(Array(A), 2) instead"))
     else
         throw(ArgumentError("second argument must be either 1 or Inf, got $p"))
     end
diff --git a/src/readonly.jl b/src/readonly.jl
index 037e1f9d..710567ab 100644
--- a/src/readonly.jl
+++ b/src/readonly.jl
@@ -13,16 +13,19 @@ ReadOnly(x::ReadOnly) = x
 Base.getproperty(x::ReadOnly, s::Symbol) = Base.getproperty(parent(x), s)
 @inline Base.parent(x::ReadOnly) = getfield(x, :parent)
 
-for i in [:length, :first, :last, :eachindex, :firstindex, :lastindex, :eltype]
+for i in [:length, :first, :last, :axes, :size]
     @eval Base.@propagate_inbounds @inline Base.$i(x::ReadOnly) = Base.$i(parent(x))
 end
-for i in [:iterate, :axes, :getindex, :size, :strides]
+for i in [:iterate, :getindex, :strides]
     @eval(Base.@propagate_inbounds @inline Base.$i(x::ReadOnly, y...) = Base.$i(parent(x), y...))
 end
 
+Base.eachindex(i::IndexLinear, x::ReadOnly) = eachindex(i, parent(x))
+Base.eachindex(i::IndexCartesian, x::ReadOnly) = eachindex(i, parent(x))
+
 Base.unsafe_convert(x::Type{Ptr{T}}, A::ReadOnly) where T = Base.unsafe_convert(x, parent(A))
 Base.elsize(::Type{ReadOnly{T,N,V}}) where {T,N,V} = Base.elsize(V)
-Base.@propagate_inbounds @inline Base.setindex!(x::ReadOnly, v, ind...) = if v == getindex(parent(x), ind...)
+Base.@propagate_inbounds @inline Base.setindex!(x::ReadOnly, v, ind::Vararg{Integer}) = if v == getindex(parent(x), ind...)
         v
     else
         error("Can't change $(typeof(x)).")
diff --git a/src/solvers/cholmod.jl b/src/solvers/cholmod.jl
index dfcbd5bb..a0118bc2 100644
--- a/src/solvers/cholmod.jl
+++ b/src/solvers/cholmod.jl
@@ -1349,7 +1349,7 @@ end
 size(F::Factor) = (size(F, 1), size(F, 2))
 axes(A::Union{Dense,Sparse,Factor}) = map(Base.OneTo, size(A))
 
-IndexStyle(::Dense) = IndexLinear()
+IndexStyle(::Type{<:Dense}) = IndexLinear()
 
 size(FC::FactorComponent, i::Integer) = size(FC.F, i)
 size(FC::FactorComponent) = size(FC.F)
@@ -1370,7 +1370,6 @@ function getindex(A::Dense{T}, i::Integer) where {T<:VTypes}
     unsafe_load(Ptr{T}(s.x), i)
 end
 
-IndexStyle(::Sparse) = IndexCartesian()
 function getindex(A::Sparse{T}, i0::Integer, i1::Integer) where T
     s = unsafe_load(typedpointer(A))
     !(1 <= i0 <= s.nrow && 1 <= i1 <= s.ncol) && throw(BoundsError())
diff --git a/test/linalg.jl b/test/linalg.jl
index d32adcc4..4ddbe84b 100644
--- a/test/linalg.jl
+++ b/test/linalg.jl
@@ -919,11 +919,12 @@ end
         @test dot(x, A, y) ≈ dot(x, Av, y)
     end
 
-    for (T, trans) in ((Float64, Symmetric), (ComplexF64, Hermitian)), uplo in (:U, :L)
+    for (T, trans) in ((Float64, Symmetric), (ComplexF64, Symmetric), (ComplexF64, Hermitian)), uplo in (:U, :L)
         B = sprandn(T, 10, 10, 0.2)
         x = sprandn(T, 10, 0.4)
         S = trans(B'B, uplo)
-        @test dot(x, S, x) ≈ dot(Vector(x), S, Vector(x)) ≈ dot(Vector(x), Matrix(S), Vector(x))
+        Sd = trans(Matrix(B'B), uplo)
+        @test dot(x, S, x) ≈ dot(x, Sd, x) ≈ dot(Vector(x), S, Vector(x)) ≈ dot(Vector(x), Sd, Vector(x))
     end
 end