Raise a warning if NumPy will not raise an error during conversion

Tests/test_image_array.py

@@ -35,10 +35,13 @@ def test_toarray():
     test_with_dtype(numpy.float64)
     test_with_dtype(numpy.uint8)
 
-    if parse_version(numpy.__version__) >= parse_version("1.23"):
-        with Image.open("Tests/images/truncated_jpeg.jpg") as im_truncated:
+    with Image.open("Tests/images/truncated_jpeg.jpg") as im_truncated:
+        if parse_version(numpy.__version__) >= parse_version("1.23"):
             with pytest.raises(OSError):
                 numpy.array(im_truncated)
+        else:
+            with pytest.warns(UserWarning):
+                numpy.array(im_truncated)
 
 
 def test_fromarray():

src/PIL/Image.py

@@ -679,12 +679,24 @@ class Image:
         new["shape"] = shape
         new["typestr"] = typestr
         new["version"] = 3
-        if self.mode == "1":
-            # Binary images need to be extended from bits to bytes
-            # See: https://github.com/python-pillow/Pillow/issues/350
-            new["data"] = self.tobytes("raw", "L")
-        else:
-            new["data"] = self.tobytes()
+        try:
+            if self.mode == "1":
+                # Binary images need to be extended from bits to bytes
+                # See: https://github.com/python-pillow/Pillow/issues/350
+                new["data"] = self.tobytes("raw", "L")
+            else:
+                new["data"] = self.tobytes()
+        except Exception as e:
+            if not isinstance(e, (MemoryError, RecursionError)):
+                try:
+                    import numpy
+                    from packaging.version import parse as parse_version
+                except ImportError:
+                    pass
+                else:
+                    if parse_version(numpy.__version__) < parse_version("1.23"):
+                        warnings.warn(e)
+            raise
         return new
 
     def __getstate__(self):