encukou · Jul 17, 2024 · Jul 17, 2024 · Jul 17, 2024 · Jul 23, 2024 · Jul 23, 2024
diff --git a/Include/internal/pycore_global_objects_fini_generated.h b/Include/internal/pycore_global_objects_fini_generated.h
diff --git a/Include/internal/pycore_global_strings.h b/Include/internal/pycore_global_strings.h
@@ -42,6 +42,7 @@ struct _Py_global_strings {
         STRUCT_FOR_STR(dbl_percent, "%%")
         STRUCT_FOR_STR(defaults, ".defaults")
         STRUCT_FOR_STR(dot_locals, ".<locals>")
+        STRUCT_FOR_STR(dot_zero, ".0")
         STRUCT_FOR_STR(empty, "")
         STRUCT_FOR_STR(format, ".format")
         STRUCT_FOR_STR(generic_base, ".generic_base")

diff --git a/Include/internal/pycore_runtime_init_generated.h b/Include/internal/pycore_runtime_init_generated.h
diff --git a/Include/internal/pycore_unicodeobject_generated.h b/Include/internal/pycore_unicodeobject_generated.h
diff --git a/Lib/test/test_code.py b/Lib/test/test_code.py
@@ -570,13 +570,6 @@ def f(a='str_value'):
             return a
         self.assertIsInterned(f())
 
-    @cpython_only
-    @unittest.skipIf(Py_GIL_DISABLED, "free-threaded build interns all string constants")
-    def test_interned_string_with_null(self):
-        co = compile(r'res = "str\0value!"', '?', 'exec')
-        v = self.find_const(co.co_consts, 'str\0value!')
-        self.assertIsNotInterned(v)
-
     @cpython_only
     @unittest.skipUnless(Py_GIL_DISABLED, "does not intern all constants")
     @skip_if_suppress_immortalization()

diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-07-23-16-20-02.gh-issue-121954.ydF8sg.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-07-23-16-20-02.gh-issue-121954.ydF8sg.rst
@@ -0,0 +1,3 @@
+Fixed issue where creating a :class:`code <types.CodeType>` object would
+sometimes mutate argument tuples. This changes details of how code constants
+and names are interned, immortalized and de-duplicated.