commit c41eed1a874e2f22bde45c3c89418414b7a37f46
author Victor Stinner <vstinner@python.org> Tue Jun 23 15:54:35 2020 +0200
committer GitHub <noreply@github.com> Tue Jun 23 15:54:35 2020 +0200
tree e90ff0bf1c5349169f3f04c914695b3c4b476f37
parent 32f2eda85957365d208f499b730d30b7eb419741

bpo-40521: Make bytes singletons per interpreter (GH-21074)

Each interpreter now has its own empty bytes string and single byte
character singletons.

Replace STRINGLIB_EMPTY macro with STRINGLIB_GET_EMPTY() macro.

Objects/stringlib/partition.h

diff --git a/Objects/stringlib/partition.h b/Objects/stringlib/partition.h
index ed32a6f..3731df5 100644
--- a/Objects/stringlib/partition.h
+++ b/Objects/stringlib/partition.h
@@ -37,10 +37,12 @@
 #else
         Py_INCREF(str_obj);
         PyTuple_SET_ITEM(out, 0, (PyObject*) str_obj);
-        Py_INCREF(STRINGLIB_EMPTY);
-        PyTuple_SET_ITEM(out, 1, (PyObject*) STRINGLIB_EMPTY);
-        Py_INCREF(STRINGLIB_EMPTY);
-        PyTuple_SET_ITEM(out, 2, (PyObject*) STRINGLIB_EMPTY);
+        PyObject *empty = (PyObject*)STRINGLIB_GET_EMPTY();
+        assert(empty != NULL);
+        Py_INCREF(empty);
+        PyTuple_SET_ITEM(out, 1, empty);
+        Py_INCREF(empty);
+        PyTuple_SET_ITEM(out, 2, empty);
 #endif
         return out;
     }
@@ -90,10 +92,12 @@
             return NULL;
         }
 #else
-        Py_INCREF(STRINGLIB_EMPTY);
-        PyTuple_SET_ITEM(out, 0, (PyObject*) STRINGLIB_EMPTY);
-        Py_INCREF(STRINGLIB_EMPTY);
-        PyTuple_SET_ITEM(out, 1, (PyObject*) STRINGLIB_EMPTY);
+        PyObject *empty = (PyObject*)STRINGLIB_GET_EMPTY();
+        assert(empty != NULL);
+        Py_INCREF(empty);
+        PyTuple_SET_ITEM(out, 0, empty);
+        Py_INCREF(empty);
+        PyTuple_SET_ITEM(out, 1, empty);
         Py_INCREF(str_obj);
         PyTuple_SET_ITEM(out, 2, (PyObject*) str_obj);
 #endif