include return variables in uninit ptr detector

slither/detectors/variables/uninitialized_storage_variables.py

@@ -104,8 +104,9 @@ Bob calls `func`. As a result, `owner` is overridden to `0`.
             for function in contract.functions:
                 if function.is_implemented and function.entry_point:
                     uninitialized_storage_variables = [
-                        v for v in function.local_variables if v.is_storage and v.uninitialized
+                        v for v in function.variables if v.is_storage and v.uninitialized
                     ]
+
                     function.entry_point.context[self.key] = uninitialized_storage_variables
                     self._detect_uninitialized(function, function.entry_point, [])
 

tests/detectors/uninitialized-storage/0.8.19/uninitialized_storage_pointer.sol

@@ -0,0 +1,12 @@
+contract Uninitialized{
+
+    struct St{
+        uint a;
+    }
+
+    function test() internal returns (St storage ret){
+        ret =  ret;
+        ret.a += 1;
+    }    
+
+}

tests/detectors/uninitialized-storage/0.8.19/uninitialized_storage_pointer.sol.0.8.19.UninitializedStorageVars.json

@@ -0,0 +1,85 @@
+[
+    [
+        {
+            "elements": [
+                {
+                    "type": "variable",
+                    "name": "ret",
+                    "source_mapping": {
+                        "start": 101,
+                        "length": 14,
+                        "filename_relative": "tests/detectors/uninitialized-storage/0.8.19/uninitialized_storage_pointer.sol",
+                        "filename_absolute": "/GENERIC_PATH",
+                        "filename_short": "tests/detectors/uninitialized-storage/0.8.19/uninitialized_storage_pointer.sol",
+                        "is_dependency": false,
+                        "lines": [
+                            7
+                        ],
+                        "starting_column": 39,
+                        "ending_column": 53
+                    },
+                    "type_specific_fields": {
+                        "parent": {
+                            "type": "function",
+                            "name": "test",
+                            "source_mapping": {
+                                "start": 67,
+                                "length": 96,
+                                "filename_relative": "tests/detectors/uninitialized-storage/0.8.19/uninitialized_storage_pointer.sol",
+                                "filename_absolute": "/GENERIC_PATH",
+                                "filename_short": "tests/detectors/uninitialized-storage/0.8.19/uninitialized_storage_pointer.sol",
+                                "is_dependency": false,
+                                "lines": [
+                                    7,
+                                    8,
+                                    9,
+                                    10
+                                ],
+                                "starting_column": 5,
+                                "ending_column": 6
+                            },
+                            "type_specific_fields": {
+                                "parent": {
+                                    "type": "contract",
+                                    "name": "Uninitialized",
+                                    "source_mapping": {
+                                        "start": 0,
+                                        "length": 170,
+                                        "filename_relative": "tests/detectors/uninitialized-storage/0.8.19/uninitialized_storage_pointer.sol",
+                                        "filename_absolute": "/GENERIC_PATH",
+                                        "filename_short": "tests/detectors/uninitialized-storage/0.8.19/uninitialized_storage_pointer.sol",
+                                        "is_dependency": false,
+                                        "lines": [
+                                            1,
+                                            2,
+                                            3,
+                                            4,
+                                            5,
+                                            6,
+                                            7,
+                                            8,
+                                            9,
+                                            10,
+                                            11,
+                                            12
+                                        ],
+                                        "starting_column": 1,
+                                        "ending_column": 2
+                                    }
+                                },
+                                "signature": "test()"
+                            }
+                        }
+                    }
+                }
+            ],
+            "description": "Uninitialized.test().ret (tests/detectors/uninitialized-storage/0.8.19/uninitialized_storage_pointer.sol#7) is a storage variable never initialized\n",
+            "markdown": "[Uninitialized.test().ret](tests/detectors/uninitialized-storage/0.8.19/uninitialized_storage_pointer.sol#L7) is a storage variable never initialized\n",
+            "first_markdown_element": "tests/detectors/uninitialized-storage/0.8.19/uninitialized_storage_pointer.sol#L7",
+            "id": "cc7efd7ba9d430d21b17f18d15e561d2e188b59a3d62b9c5e76eeec765626cbd",
+            "check": "uninitialized-storage",
+            "impact": "High",
+            "confidence": "High"
+        }
+    ]
+]

tests/test_detectors.py

@@ -371,6 +371,11 @@ ALL_TEST_OBJECTS = [
         "uninitialized_storage_pointer.sol",
         "0.4.25",
     ),
+    Test(
+        all_detectors.UninitializedStorageVars,
+        "uninitialized_storage_pointer.sol",
+        "0.8.19",
+    ),
     Test(all_detectors.TxOrigin, "tx_origin.sol", "0.4.25"),
     Test(all_detectors.TxOrigin, "tx_origin.sol", "0.5.16"),
     Test(all_detectors.TxOrigin, "tx_origin.sol", "0.6.11"),