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GH-128682: Mark two more macros as escaping. (GH-129645)

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Expand out SETLOCAL so that code generator can see the decref. Mark Py_CLEAR as escaping
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Mark Shannon 2025-02-04 14:00:51 +00:00 • committed by GitHub
parent 2effea4dab
commit 96ff4c2486
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6 changed files with 127 additions and 46 deletions
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Python/ceval_macros.h
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@ -221,15 +221,6 @@ GETITEM(PyObject *v, Py_ssize_t i) {
#define LOCALS_ARRAY (frame->localsplus)
#define GETLOCAL(i) (frame->localsplus[i])
/* The SETLOCAL() macro must not DECREF the local variable in-place and
then store the new value; it must copy the old value to a temporary
value, then store the new value, and then DECREF the temporary value.
This is because it is possible that during the DECREF the frame is
accessed by other code (e.g. a __del__ method or gc.collect()) and the
variable would be pointing to already-freed memory. */
#define SETLOCAL(i, value) do { _PyStackRef tmp = GETLOCAL(i); \
GETLOCAL(i) = value; \
PyStackRef_XCLOSE(tmp); } while (0)
#ifdef Py_STATS
#define UPDATE_MISS_STATS(INSTNAME) \