gh-117649: Raise ImportError for unsupported modules in free-threaded build (#117651)

The free-threaded build does not currently support the combination of
single-phase init modules and non-isolated subinterpreters. Ensure that
`check_multi_interp_extensions` is always `True` for subinterpreters in
the free-threaded build so that importing these modules raises an
`ImportError`.

1 files changed, 4 insertions, 0 deletions

diff --git a/Lib/test/test_importlib/test_util.py b/Lib/test/test_importlib/test_util.py
index 115cb7a..f0583c5 100644
--- a/Lib/test/test_importlib/test_util.py
+++ b/Lib/test/test_importlib/test_util.py
@@ -682,6 +682,9 @@ class IncompatibleExtensionModuleRestrictionsTests(unittest.TestCase):
                 raise ImportError(excsnap.msg)
 
     @unittest.skipIf(_testsinglephase is None, "test requires _testsinglephase module")
+    # gh-117649: single-phase init modules are not currently supported in
+    # subinterpreters in the free-threaded build
+    @support.expected_failure_if_gil_disabled()
     def test_single_phase_init_module(self):
         script = textwrap.dedent('''
             from importlib.util import _incompatible_extension_module_restrictions
@@ -706,6 +709,7 @@ class IncompatibleExtensionModuleRestrictionsTests(unittest.TestCase):
                 self.run_with_own_gil(script)
 
     @unittest.skipIf(_testmultiphase is None, "test requires _testmultiphase module")
+    @support.requires_gil_enabled("gh-117649: not supported in free-threaded build")
     def test_incomplete_multi_phase_init_module(self):
         # Apple extensions must be distributed as frameworks. This requires
         # a specialist loader.