Add our annotations to _multiprocessing

from_cpython/Modules/_multiprocessing/multiprocessing.c

@@ -255,16 +255,16 @@ init_multiprocessing(void)
     temp = PyImport_ImportModule(PICKLE_MODULE);
     if (!temp)
         return;
-    pickle_dumps = PyObject_GetAttrString(temp, "dumps");
-    pickle_loads = PyObject_GetAttrString(temp, "loads");
-    pickle_protocol = PyObject_GetAttrString(temp, "HIGHEST_PROTOCOL");
+    pickle_dumps = PyGC_RegisterStaticConstant(PyObject_GetAttrString(temp, "dumps"));
+    pickle_loads = PyGC_RegisterStaticConstant(PyObject_GetAttrString(temp, "loads"));
+    pickle_protocol = PyGC_RegisterStaticConstant(PyObject_GetAttrString(temp, "HIGHEST_PROTOCOL"));
     Py_XDECREF(temp);
 
     /* Get copy of BufferTooShort */
     temp = PyImport_ImportModule("multiprocessing");
     if (!temp)
         return;
-    BufferTooShort = PyObject_GetAttrString(temp, "BufferTooShort");
+    BufferTooShort = PyGC_RegisterStaticConstant(PyObject_GetAttrString(temp, "BufferTooShort"));
     Py_XDECREF(temp);
 
     /* Add connection type to module */
@@ -291,6 +291,7 @@ init_multiprocessing(void)
             return;
         PyDict_SetItemString(SemLockType.tp_dict, "SEM_VALUE_MAX",
                              py_sem_value_max);
+        Py_DECREF(py_sem_value_max);
     }
     PyModule_AddObject(module, "SemLock", (PyObject*)&SemLockType);
 #endif

src/runtime/types.cpp

@@ -4779,6 +4779,8 @@ static void call_sys_exitfunc(void) {
                 PySys_WriteStderr("Error in sys.exitfunc:\n");
             }
             PyErr_Print();
+        } else {
+            Py_DECREF(res);
         }
         Py_DECREF(exitfunc);
     }

test/tests/import_test.py

-# expected: reffail
 import import_target
 print import_target.x
 

test/tests/logging_test.py

-# expected: reffail
 import logging
 import warnings
 

test/tests/multiprocessing_test.py

-# expected: reffail
 import multiprocessing
 
 # from https://docs.python.org/2/library/multiprocessing.html

test/tests/pyc_stress_test.py

-# expected: reffail
-# skip-if: '-x' in EXTRA_JIT_ARGS
-# - too slow
 
 # Note: CPython doesn't pass this test