Fix UBSan failures for `keyobject`, `lru_list_elem`, `lru_cache_object`.
Suppress unused return values.
Change `_PyPartialObject_CAST` (from #124733) to `partialobject_CAST`
for consistency with the current style for these macros
Newer GCC versions accept both __attribute__((no_sanitize("undefined")))
and __attribute__((no_sanitize_undefined)) so check that the macro is
not already defined.
Store the current running task on the thread state, it makes it thread safe for the free-threading build and while improving performance as there is no lock contention, this effectively makes it lock free.
When accessing the current task of the current running loop in current thread, no locking is required and can be acessed without locking.
In the rare case of accessing current task of a loop running in a different thread, the stop the world pauses is used in free-threading builds to stop all other running threads and find the task for the specified loop.
This also makes it easier for external introspection to find the current task, and now it will be always correct.
* Implement C recursion protection with limit pointers
* Remove calls to PyOS_CheckStack
* Add stack protection to parser
* Make tests more robust to low stacks
* Improve error messages for stack overflow
Add cast macros for date and time objects
Fix UBSan failures for `PyDateTime_Delta`, `PyDateTime_Date`, `PyDateTime_TZInfo`, `PyDateTime_TimeZone`, `PyDateTime_Time`, `PyDateTime_DateTime`, `PyDateTime_IsoCalendarDate`
Fix up naming
In the Python implementation, "Z" was allowed where only "+" or "-" should be allowed in time zone specifiers. In the C implementation, ":" was allowed as a separator between the whole and fractional portion of times (seconds). These have both been forbidden and the error messages harmonized.
Fix some UBSan failures for `dequeobject`, `dequeiterobject`, `defdictobject` and `tuplegetterobject`.
We also perform some cleanup by suppressing unused return values and renaming the
unused argument in `METH_NOARGS` methods to `dummy` for semantic purposes.
Use an atomic operation when setting
`_PyRuntime.signals.unhandled_keyboard_interrupt`. We now only clear the
variable at the start of `_PyRun_Main`, which is the same function where
we check it.
This avoids race conditions where previously another thread might call
`run_eval_code_obj()` and erroneously clear the unhandled keyboard
interrupt.
Updates error messages in datetime and makes them consistent between Python and C.
---------
Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com>
Co-authored-by: Peter Bierma <zintensitydev@gmail.com>
Co-authored-by: Paul Ganssle <1377457+pganssle@users.noreply.github.com>
Add a helper for raising DB-API compatible exceptions based on the
result code of SQLite C APIs. Some APIs do not store the error indicator
on the database pointer, so we need to be able to deduce the DB-API
compatible exception directly from the error code.
- rename _pysqlite_seterror() as set_error_from_db()
- introduce set_error_from_code()
This fixes UBSan failures for `dbmobject`.
In addition, we perform some minor cleanup changes such as renaming
some `args` parameter to `dummy` in some `METH_NOARGS` methods and
suppressing an unused return value in `_dbm_module_free`.
Move many functions from _testcapimodule.c into more specific files
in Modules/_testcapi/.
In moved code:
* Replace get_testerror() with PyExc_AssertionError.
* Replace raiseTestError() with
PyErr_Format(PyExc_AssertionError, ...).
* Move PyFunction C API tests to a new file.
* Add Lib/test/test_capi/test_function.py.
* Move tests from test_capi.test_misc to test_capi.test_function.
