From c4e7a033c2578e983ff747c448efaa13a7db8bc4 Mon Sep 17 00:00:00 2001
From: N5N3 <2642243996@qq.com>
Date: Mon, 21 Feb 2022 19:43:04 +0800
Subject: [PATCH] Add some comments to patch for `StaticArray`

---
 src/staticarrays_support.jl | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/staticarrays_support.jl b/src/staticarrays_support.jl
index d03be3b0..0c1357db 100644
--- a/src/staticarrays_support.jl
+++ b/src/staticarrays_support.jl
@@ -28,7 +28,10 @@ end
 StructArrays.component(s::FieldArray, i) = invoke(StructArrays.component, Tuple{Any, Any}, s, i)
 StructArrays.createinstance(T::Type{<:FieldArray}, args...) = invoke(createinstance, Tuple{Type{<:Any}, Vararg}, T, args...)
 
+# StaticArrayStyle has no similar defined.
+# Convert to `DefaultArrayStyle` to return a sized (Struct)Array.
+# TODO: return a StaticArray?
 function Base.copy(bc::Broadcasted{StructArrayStyle{StaticArrayStyle{N},N}}) where {N}
-    B = convert(Broadcasted{StructArrayStyle{Broadcast.DefaultArrayStyle{N},N}}, bc)
-    copy(B)
+    bc′ = convert(Broadcasted{StructArrayStyle{Broadcast.DefaultArrayStyle{N},N}}, bc)
+    return copy(bc′)
 end