unsafe_wrap for symbols

Author: vchuravy

src/array.jl

@@ -231,7 +231,6 @@ end
 function Base.unsafe_wrap(::Type{CuArray{T,N,M}},
                           ptr::CuPtr{T}, dims::NTuple{N,Int};
                           own::Bool=false, ctx::CuContext=context()) where {T,N,M}
-  isbitstype(T) || throw(ArgumentError("Can only unsafe_wrap a pointer to a bits type"))
   sz = prod(dims) * sizeof(T)
 
   # create a memory object

test/base/array.jl

@@ -155,6 +155,18 @@ end
         cpu_arr = unsafe_wrap(Array, cpu_ptr, 1)
         @test cpu_arr == [42]
     end
+
+    # symbols and tuples thereof
+    let a = CuArray([:a])
+      b = unsafe_wrap(CuArray, pointer(a), 1)
+      @test typeof(b) <: CuArray{Symbol,1}
+      @test size(b) == (1,)
+    end
+    let a = CuArray([(:a,:b)])
+      b = unsafe_wrap(CuArray, pointer(a), 1)
+      @test typeof(b) <: CuArray{Tuple{Symbol,Symbol},1}
+      @test size(b) == (1,)
+    end
 end
 
 @testset "adapt" begin