bpo-40334: Rename PyConfig.use_peg to _use_peg_parser (GH-19670)
* Rename PyConfig.use_peg to _use_peg_parser
* Document PyConfig._use_peg_parser and mark it a deprecated
* Mark -X oldparser option and PYTHONOLDPARSER env var as deprecated
in the documentation.
* Add use_old_parser() and skip_if_new_parser() to test.support
* Remove sys.flags.use_peg: use_old_parser() uses
_testinternalcapi.get_configs() instead.
* Enhance test_embed tests
* subprocess._args_from_interpreter_flags() copies -X oldparser
diff --git a/Lib/test/test_parser.py b/Lib/test/test_parser.py
index 124a279..0ee994f 100644
--- a/Lib/test/test_parser.py
+++ b/Lib/test/test_parser.py
@@ -900,7 +900,7 @@
st = parser.expr(e)
st.compile()
- @unittest.skipIf(sys.flags.use_peg, "Pegen does not trigger memory error with this many parenthesis")
+ @support.skip_if_new_parser("Pegen does not trigger memory error with this many parenthesis")
def test_trigger_memory_error(self):
e = self._nested_expression(100)
rc, out, err = assert_python_failure('-Xoldparser', '-c', e)