fixup! datadeps: Fix GPU execution

Author: jpsamaroo

src/datadeps/remainders.jl

@@ -482,7 +482,8 @@ function read_remainder!(copies::Vector{UInt8}, copies_offset::UInt64, from::Den
     elsize = sizeof(eltype(from))
     from_offset = UInt64((from_ptr - UInt64(pointer(from))) / elsize) + UInt64(1)
     from_vec = reshape(from, prod(size(from)))::DenseVector{eltype(from)}
-    copyto!(copies, Int(copies_offset), from_vec, Int(from_offset), Int(n))
+    copies_typed = unsafe_wrap(Vector{eltype(from)}, Ptr{eltype(from)}(pointer(copies, copies_offset)), n)
+    copyto!(copies_typed, 1, from_vec, Int(from_offset), Int(n))
 end
 function read_remainder!(copies::Vector{UInt8}, copies_offset::UInt64, from::SubArray, from_ptr::UInt64, n::UInt64)
     read_remainder!(copies, copies_offset, parent(from), from_ptr, n)
@@ -492,7 +493,8 @@ function write_remainder!(copies::Vector{UInt8}, copies_offset::UInt64, to::Dens
     elsize = sizeof(eltype(to))
     to_offset = UInt64((to_ptr - UInt64(pointer(to))) / elsize) + UInt64(1)
     to_vec = reshape(to, prod(size(to)))::DenseVector{eltype(to)}
-    copyto!(to_vec, Int(to_offset), copies, Int(copies_offset), Int(n))
+    copies_typed = unsafe_wrap(Vector{eltype(to)}, Ptr{eltype(to)}(pointer(copies, copies_offset)), n)
+    copyto!(to_vec, Int(to_offset), copies_typed, 1, Int(n))
 end
 function write_remainder!(copies::Vector{UInt8}, copies_offset::UInt64, to::SubArray, to_ptr::UInt64, n::UInt64)
     write_remainder!(copies, copies_offset, parent(to), to_ptr, n)