diff --git a/test/test_loopy.py b/test/test_loopy.py
index e424e063f9e062ed68054e1effe91d66bc389d50..e62e52a6c239dddafa2dadd189151549aeeb941b 100644
--- a/test/test_loopy.py
+++ b/test/test_loopy.py
@@ -1363,6 +1363,48 @@ def test_save_with_base_storage(ctx_factory, debug=False):
     save_and_reload_temporaries_test(queue, knl, np.arange(10), debug)
 
 
+def test_save_ambiguous_storage_requirements():
+    knl = lp.make_kernel(
+            "{[i,j]: 0 <= i < 10 and 0 <= j < 10}",
+            """
+            <>a[j] = j
+            ... gbarrier
+            out[i,j] = a[j]
+            """,
+            seq_dependencies=True)
+
+    knl = lp.tag_inames(knl, dict(i="g.0", j="l.0"))
+    knl = lp.duplicate_inames(knl, "j", within="writes:out", tags={"j": "l.0"})
+    knl = lp.set_temporary_scope(knl, "a", "local")
+
+    knl = lp.preprocess_kernel(knl)
+    knl = lp.get_one_scheduled_kernel(knl)
+
+    from loopy.diagnostic import LoopyError
+    with pytest.raises(LoopyError):
+        lp.save_and_reload_temporaries(knl)
+
+
+def test_save_across_inames_with_same_tag(ctx_factory, debug=False):
+    ctx = ctx_factory()
+    queue = cl.CommandQueue(ctx)
+
+    knl = lp.make_kernel(
+            "{[i]: 0 <= i < 10}",
+            """
+            <>a[i] = i
+            ... gbarrier
+            out[i] = a[i]
+            """,
+            "...",
+            seq_dependencies=True)
+
+    knl = lp.tag_inames(knl, dict(i="l.0"))
+    knl = lp.duplicate_inames(knl, "i", within="reads:a", tags={"i": "l.0"})
+
+    save_and_reload_temporaries_test(queue, knl, np.arange(10), debug)
+
+
 def test_missing_temporary_definition_detection():
     knl = lp.make_kernel(
             "{ [i]: 0<=i<10 }",