Fix handling of typecasting in searchsorted

python/cudf/cudf/core/frame.py

@@ -1409,12 +1409,23 @@ def searchsorted(
         if len(values) != len(self._data):
             raise ValueError("Mismatch number of columns to search for.")
 
+        common_dtype_list = [
+            find_common_type([col.dtype, val.dtype])
+            for col, val in zip(self._columns, values)
+        ]
         sources = [
             col
-            if is_dtype_equal(col.dtype, val.dtype)
-            else col.astype(val.dtype)
-            for col, val in zip(self._columns, values)
+            if is_dtype_equal(col.dtype, common_dtype)
+            else col.astype(common_dtype)
+            for col, common_dtype in zip(self._columns, common_dtype_list)
         ]
+        values = [
+            val
+            if is_dtype_equal(val.dtype, common_dtype)
+            else val.astype(common_dtype)
+            for val, common_dtype in zip(values, common_dtype_list)
+        ]
+
         outcol = libcudf.search.search_sorted(
             sources,
             values,

python/cudf/cudf/tests/test_indexing.py

@@ -2067,3 +2067,16 @@ def test_loc_index_notinindex_slice(
             expect = pdf.loc[lo:hi:take_order]
             actual = df.loc[lo:hi:take_order]
             assert_eq(expect, actual)
+
+
+@pytest.mark.parametrize(
+    "arg", [slice(2, 4), slice(2, 5), slice(2.3, 5), slice(4.6, 6)]
+)
+def test_series_iloc_float_int(arg):
+    gs = cudf.Series(range(4), index=[2.0, 3.0, 4.5, 5.5])
+    ps = gs.to_pandas()
+
+    actual = gs.loc[arg]
+    expected = ps.loc[arg]
+
+    assert_eq(actual, expected)