restrict to known non-offset-indexed inds

Author: LilithHafner

base/genericmemory.jl

@@ -297,8 +297,8 @@ end
     $(Expr(:new, :(Array{T, N}), :ref, :dims))
 end
 
-@eval function view(m::GenericMemory{M, T}, inds::AbstractUnitRange) where {M, T}
-    isempty(inds) && return T[] # needed to allow view(Memory{T}(undef, 0), 2:1)
+@eval function view(m::GenericMemory{M, T}, inds::Union{UnitRange, OneTo}) where {M, T}
+    !(inds isa OneTo) && isempty(inds) && return T[] # needed to allow view(Memory{T}(undef, 0), 2:1)
     @boundscheck checkbounds(m, inds)
     ref = MemoryRef(m, first(inds)) # @inbounds here is not safe on view(Memory{T}(undef, 0), 2:1)
     dims = (length(inds),)

test/arrayops.jl

@@ -3215,6 +3215,9 @@ end
     @test view(empty_mem, 1:0)::Vector{Module} == []
     @test view(empty_mem, 10:3)::Vector{Module} == []
     @test isempty(reshape(empty_mem, 0, 7, 1)::Array{Module, 3})
+
+    offset_inds = OffsetArrays.IdOffsetRange(values=3:6, indices=53:56)
+    @test view(collect(mem), offset_inds) == view(mem, offset_inds)
 end
 
 @testset "Memory size" begin