Set OffsetArrays lower bound and remove pirated unsafe_convert definition

Author: chriselrod

src/mapreduce.jl

@@ -65,7 +65,6 @@ function _vmapreduce(f::F, op::OP, ::StaticInt{W}, N, ::Type{T}, args::Vararg{De
     end
     vreduce(op, a_0)
 end
-
 @inline vmapreduce(f, op, args...) = mapreduce(f, op, args...)
 
 length_one_axis(::Base.OneTo) = Base.OneTo(1)

test/offsetarrays.jl

@@ -3,8 +3,6 @@ using LoopVectorization: Static
 # T = Float64; r = -1:1;
 # T = Float32; r = -1:1;
 
-# TODO: remove this once this PR merges: https://github.com/JuliaArrays/OffsetArrays.jl/pull/170
-@inline Base.unsafe_convert(::Type{Ptr{T}}, A::OffsetArray{T}) where {T} = pointer(parent(A))
 
 @testset "OffsetArrays" begin