use checkbounds instead of in in copyto! (#28146)

Author: KristofferC

base/abstractarray.jl

@@ -733,7 +733,7 @@ copyto!(dest::AbstractArray, src::AbstractArray) =
 
 function copyto!(::IndexStyle, dest::AbstractArray, ::IndexStyle, src::AbstractArray)
     destinds, srcinds = LinearIndices(dest), LinearIndices(src)
-    isempty(srcinds) || (first(srcinds) ∈ destinds && last(srcinds) ∈ destinds) ||
+    isempty(srcinds) || (checkbounds(Bool, destinds, first(srcinds)) && checkbounds(Bool, destinds, last(srcinds))) ||
         throw(BoundsError(dest, srcinds))
     @inbounds for i in srcinds
         dest[i] = src[i]
@@ -743,7 +743,7 @@ end
 
 function copyto!(::IndexStyle, dest::AbstractArray, ::IndexCartesian, src::AbstractArray)
     destinds, srcinds = LinearIndices(dest), LinearIndices(src)
-    isempty(srcinds) || (first(srcinds) ∈ destinds && last(srcinds) ∈ destinds) ||
+    isempty(srcinds) || (checkbounds(Bool, destinds, first(srcinds)) && checkbounds(Bool, destinds, last(srcinds))) ||
         throw(BoundsError(dest, srcinds))
     i = 0
     @inbounds for a in src
@@ -758,7 +758,7 @@ end
 
 function copyto!(dest::AbstractArray, dstart::Integer, src::AbstractArray, sstart::Integer)
     srcinds = LinearIndices(src)
-    sstart ∈ srcinds || throw(BoundsError(src, sstart))
+    checkbounds(Bool, srcinds, sstart) || throw(BoundsError(src, sstart))
     copyto!(dest, dstart, src, sstart, last(srcinds)-sstart+1)
 end
 
@@ -768,8 +768,8 @@ function copyto!(dest::AbstractArray, dstart::Integer,
     n == 0 && return dest
     n < 0 && throw(ArgumentError(string("tried to copy n=", n, " elements, but n should be nonnegative")))
     destinds, srcinds = LinearIndices(dest), LinearIndices(src)
-    (dstart ∈ destinds && dstart+n-1 ∈ destinds) || throw(BoundsError(dest, dstart:dstart+n-1))
-    (sstart ∈ srcinds  && sstart+n-1 ∈ srcinds)  || throw(BoundsError(src,  sstart:sstart+n-1))
+    (checkbounds(Bool, destinds, dstart) && checkbounds(Bool, destinds, dstart+n-1)) || throw(BoundsError(dest, dstart:dstart+n-1))
+    (checkbounds(Bool, srcinds, sstart)  && checkbounds(Bool, srcinds, sstart+n-1))  || throw(BoundsError(src,  sstart:sstart+n-1))
     @inbounds for i = 0:(n-1)
         dest[dstart+i] = src[sstart+i]
     end