From 6bbcc8a65daff8c0863d4541c6822f9c3d03b268 Mon Sep 17 00:00:00 2001
From: TomNicholas <tom@cworthy.org>
Date: Fri, 22 Mar 2024 16:13:03 -0400
Subject: [PATCH] avoid unnecessary auto-creation of index to avoid userwarning

---
 xarray/core/dataarray.py | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/xarray/core/dataarray.py b/xarray/core/dataarray.py
index 3d7de32f51d..bea0fb29978 100644
--- a/xarray/core/dataarray.py
+++ b/xarray/core/dataarray.py
@@ -208,11 +208,17 @@ def _check_data_shape(
                 return data
             else:
                 data_shape = tuple(
-                    as_variable(coords[k], k).size if k in coords.keys() else 1
+                    (
+                        as_variable(coords[k], k, auto_convert=False).size
+                        if k in coords.keys()
+                        else 1
+                    )
                     for k in dims
                 )
         else:
-            data_shape = tuple(as_variable(coord, "foo").size for coord in coords)
+            data_shape = tuple(
+                as_variable(coord, "foo", auto_convert=False).size for coord in coords
+            )
         data = np.full(data_shape, data)
     return data