importtriofromcontextlibimportsuppressimportgcdeftest_error_in_run_loop()->None:# Blow stuff up real good to check we at least get a TrioInternalErrorasyncdefmain()->None:task=trio.lowlevel.current_task()task._schedule_points="hello!"# type: ignoreawaittrio.lowlevel.checkpoint()withsuppress(trio.TrioInternalError):trio.run(main)gc.collect()gc.collect()# removing this line makes the segfault disappear

$ tox -e repro_crash===================================== test session starts =====================================platform linux -- Python 3.14.0b1, pytest-8.3.5, pluggy-1.5.0cachedir: .tox/crash/.pytest_cacherootdir: /home/h/Git/trio/unbreak_314configfile: pyproject.tomlcollected 1 item                                                                              Fatal Python error: Segmentation faultCurrent thread 0x00007fc3244b0bc0 [pytest] (most recent call first):  Garbage-collecting  File "./foo.py", line 14 in test_error_in_run_loop  File ".../site-packages/_pytest/python.py", line 159 in pytest_pyfunc_call  File ".../site-packages/pluggy/_callers.py", line 103 in _multicall  File ".../site-packages/pluggy/_manager.py", line 120 in _hookexec  File ".../site-packages/pluggy/_hooks.py", line 513 in __call__  File ".../site-packages/_pytest/python.py", line 1627 in runtest  File ".../site-packages/_pytest/runner.py", line 174 in pytest_runtest_call  File ".../site-packages/pluggy/_callers.py", line 103 in _multicall  File ".../site-packages/pluggy/_manager.py", line 120 in _hookexec  File ".../site-packages/pluggy/_hooks.py", line 513 in __call__  File ".../site-packages/_pytest/runner.py", line 242 in <lambda>  File ".../site-packages/_pytest/runner.py", line 341 in from_call  File ".../site-packages/_pytest/runner.py", line 241 in call_and_report  File ".../site-packages/_pytest/runner.py", line 132 in runtestprotocol  File ".../site-packages/_pytest/runner.py", line 113 in pytest_runtest_protocol  File ".../site-packages/pluggy/_callers.py", line 103 in _multicall  File ".../site-packages/pluggy/_manager.py", line 120 in _hookexec  File ".../site-packages/pluggy/_hooks.py", line 513 in __call__  File ".../site-packages/_pytest/main.py", line 362 in pytest_runtestloop  File ".../site-packages/pluggy/_callers.py", line 103 in _multicall  File ".../site-packages/pluggy/_manager.py", line 120 in _hookexec  File ".../site-packages/pluggy/_hooks.py", line 513 in __call__  File ".../site-packages/_pytest/main.py", line 337 in _main  File ".../site-packages/_pytest/main.py", line 283 in wrap_session  File ".../site-packages/_pytest/main.py", line 330 in pytest_cmdline_main  File ".../site-packages/pluggy/_callers.py", line 103 in _multicall  File ".../site-packages/pluggy/_manager.py", line 120 in _hookexec  File ".../site-packages/pluggy/_hooks.py", line 513 in __call__  File ".../site-packages/_pytest/config/__init__.py", line 175 in main  File ".../site-packages/_pytest/config/__init__.py", line 201 in console_main  File "./.tox/crash/bin/pytest", line 10 in <module>Current thread's C stack trace (most recent call first):  Binary file "/usr/lib/libpython3.14.so.1.0", at _Py_DumpStack+0x4d [0x7fc324096a8d]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x2a778c [0x7fc3240a778c]  Binary file "/usr/lib/libc.so.6", at +0x3dcd0 [0x7fc323c4bcd0]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x23a40a [0x7fc32403a40a]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0xd8d80 [0x7fc323ed8d80]  Binary file "/usr/lib/libpython3.14.so.1.0", at _Py_Dealloc+0x75 [0x7fc323f21745]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x1436c1 [0x7fc323f436c1]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x143e65 [0x7fc323f43e65]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x2379db [0x7fc3240379db]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x237e6c [0x7fc324037e6c]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x2a4df8 [0x7fc3240a4df8]  Binary file "/usr/lib/libpython3.14.so.1.0", at PyObject_Vectorcall+0x5d [0x7fc323ebbc4d]  Binary file "/usr/lib/libpython3.14.so.1.0", at _PyEval_EvalFrameDefault+0x13ba [0x7fc323fef17a]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x201237 [0x7fc324001237]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0xbb926 [0x7fc323ebb926]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0xbbbc0 [0x7fc323ebbbc0]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x1437c9 [0x7fc323f437c9]  Binary file "/usr/lib/libpython3.14.so.1.0", at _PyObject_MakeTpCall+0x9f [0x7fc323ebb52f]  Binary file "/usr/lib/libpython3.14.so.1.0", at _PyEval_EvalFrameDefault+0x4bbf [0x7fc323ff297f]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x201237 [0x7fc324001237]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0xbb926 [0x7fc323ebb926]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0xbbbc0 [0x7fc323ebbbc0]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x1437c9 [0x7fc323f437c9]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0xbb231 [0x7fc323ebb231]  Binary file "/usr/lib/libpython3.14.so.1.0", at _PyEval_EvalFrameDefault+0x1cae [0x7fc323fefa6e]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x201237 [0x7fc324001237]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0xbb926 [0x7fc323ebb926]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0xbbbc0 [0x7fc323ebbbc0]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x1437c9 [0x7fc323f437c9]  Binary file "/usr/lib/libpython3.14.so.1.0", at _PyObject_MakeTpCall+0x9f [0x7fc323ebb52f]  Binary file "/usr/lib/libpython3.14.so.1.0", at _PyEval_EvalFrameDefault+0x4bbf [0x7fc323ff297f]  Binary file "/usr/lib/libpython3.14.so.1.0", at +0x201237 [0x7fc324001237]  <truncated rest of calls>foo.py crash: exit -11 (1.06 seconds) .> pytest foo.py pid=781607  crash: FAIL code -11 (2.11 seconds)  evaluation failed :( (2.22 seconds)