bpo-35975: Only use cf_feature_version if PyCF_ONLY_AST in cf_flags (#21021)
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@ -627,6 +627,27 @@ class SubinterpreterTest(unittest.TestCase):
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self.assertNotEqual(pickle.load(f), id(sys.modules))
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self.assertNotEqual(pickle.load(f), id(builtins))
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def test_subinterps_recent_language_features(self):
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r, w = os.pipe()
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code = """if 1:
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import pickle
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with open({:d}, "wb") as f:
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@(lambda x:x) # Py 3.9
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def noop(x): return x
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a = (b := f'1{{2}}3') + noop('x') # Py 3.8 (:=) / 3.6 (f'')
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async def foo(arg): return await arg # Py 3.5
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pickle.dump(dict(a=a, b=b), f)
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""".format(w)
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with open(r, "rb") as f:
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ret = support.run_in_subinterp(code)
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self.assertEqual(ret, 0)
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self.assertEqual(pickle.load(f), {'a': '123x', 'b': '123'})
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def test_mutate_exception(self):
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"""
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Exceptions saved in global module state get shared between
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@ -0,0 +1,3 @@
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Stefan Behnel reported that cf_feature_version is used even when
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PyCF_ONLY_AST is not set. This is against the intention and against the
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documented behavior, so it's been fixed.
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@ -3468,6 +3468,8 @@ run_in_subinterp(PyObject *self, PyObject *args)
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const char *code;
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int r;
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PyThreadState *substate, *mainstate;
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/* only initialise 'cflags.cf_flags' to test backwards compatibility */
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PyCompilerFlags cflags = {0};
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if (!PyArg_ParseTuple(args, "s:run_in_subinterp",
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&code))
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@ -3486,7 +3488,7 @@ run_in_subinterp(PyObject *self, PyObject *args)
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PyErr_SetString(PyExc_RuntimeError, "sub-interpreter creation failed");
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return NULL;
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}
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r = PyRun_SimpleString(code);
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r = PyRun_SimpleStringFlags(code, &cflags);
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Py_EndInterpreter(substate);
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PyThreadState_Swap(mainstate);
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@ -1042,7 +1042,7 @@ compute_parser_flags(PyCompilerFlags *flags)
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if (flags->cf_flags & PyCF_TYPE_COMMENTS) {
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parser_flags |= PyPARSE_TYPE_COMMENTS;
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}
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if (flags->cf_feature_version < 7) {
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if ((flags->cf_flags & PyCF_ONLY_AST) && flags->cf_feature_version < 7) {
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parser_flags |= PyPARSE_ASYNC_HACKS;
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}
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return parser_flags;
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@ -1215,7 +1215,8 @@ _PyPegen_run_parser_from_string(const char *str, int start_rule, PyObject *filen
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mod_ty result = NULL;
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int parser_flags = compute_parser_flags(flags);
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int feature_version = flags ? flags->cf_feature_version : PY_MINOR_VERSION;
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int feature_version = flags && (flags->cf_flags & PyCF_ONLY_AST) ?
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flags->cf_feature_version : PY_MINOR_VERSION;
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Parser *p = _PyPegen_Parser_New(tok, start_rule, parser_flags, feature_version,
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NULL, arena);
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if (p == NULL) {
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