fixes #24147; Copy hook causes an incompatible-pointer-types (#24149)

fixes #24147

(cherry picked from commit 5c843d3d60)

compiler/liftdestructors.nim

@@ -226,7 +226,14 @@ proc fillBodyObjTImpl(c: var TLiftCtx; t: PType, body, x, y: PNode) =
     let obj = newNodeIT(nkHiddenSubConv, c.info, t[0])
     obj.add newNodeI(nkEmpty, c.info)
     obj.add x
-    fillBody(c, skipTypes(t[0], abstractPtrs), body, obj, y)
+    var src = y
+
+    if c.kind in {attachedAsgn, attachedDeepCopy, attachedSink}:
+      src = newNodeIT(nkHiddenSubConv, c.info, t[0])
+      src.add newNodeI(nkEmpty, c.info)
+      src.add y
+
+    fillBody(c, skipTypes(t[0], abstractPtrs), body, obj, src)
   fillBodyObj(c, t.n, body, x, y, enforceDefaultOp = false)
 
 proc fillBodyObjT(c: var TLiftCtx; t: PType, body, x, y: PNode) =

tests/arc/tarc_orc.nim

@@ -160,3 +160,16 @@ block:
     testCase()
 
   main()
+
+block: # bug #24147
+  type
+    O = object of RootObj
+      val: string
+    OO = object of O
+
+  proc `=copy`(dest: var O, src: O) =
+      dest.val = src.val
+
+  let oo = OO(val: "hello world")
+  var ooCopy : OO
+  `=copy`(ooCopy, oo)