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[3.13] gh-122081: fixed crash in decimal.IEEEContext() (GH-122082) (#123136) 

gh-122081: fixed crash in decimal.IEEEContext() (GH-122082)

* gh-122081: fixed crash in decimal.IEEEContext()

Now

$ ./configure CFLAGS=-DEXTRA_FUNCTIONALITY -q && make -s && \
     ./python -m test test_decimal

- PASS

* Apply suggestions from code review



* Update Misc/NEWS.d/next/Library/2024-07-21-10-45-24.gh-issue-122081.dNrYMq.rst

* Apply suggestions from code review

---------

(cherry picked from commit b9e10d1a0f)

Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Kumar Aditya <kumaraditya@python.org>
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Miss Islington (bot) 2024-08-19 10:44:11 +02:00 committed by GitHub
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Misc/NEWS.d/next/Library/2024-07-21-10-45-24.gh-issue-122081.dNrYMq.rst Normal file
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@ -0,0 +1,2 @@
Fix a crash in the :func:`!decimal.IEEEContext` optional function
available via the ``EXTRA_FUNCTIONALITY`` configuration flag.

4
Modules/_decimal/_decimal.c
View File

@ -1519,7 +1519,7 @@ init_extended_context(PyObject *v)
#ifdef EXTRA_FUNCTIONALITY #ifdef EXTRA_FUNCTIONALITY
/* Factory function for creating IEEE interchange format contexts */ /* Factory function for creating IEEE interchange format contexts */
static PyObject * static PyObject *
ieee_context(PyObject *dummy UNUSED, PyObject *v) ieee_context(PyObject *module, PyObject *v)
{ {
PyObject *context; PyObject *context;
mpd_ssize_t bits; mpd_ssize_t bits;
@ -1536,7 +1536,7 @@ ieee_context(PyObject *dummy UNUSED, PyObject *v)
goto error; goto error;
} }
decimal_state *state = get_module_state_by_def(Py_TYPE(v)); decimal_state *state = get_module_state(module);
context = PyObject_CallObject((PyObject *)state->PyDecContext_Type, NULL); context = PyObject_CallObject((PyObject *)state->PyDecContext_Type, NULL);
if (context == NULL) { if (context == NULL) {
return NULL; return NULL;