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gh-133476: Assert with the PyStackRef_IsTaggedInt function #133477

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Merged
merged 4 commits into from
May 9, 2025
Merged

gh-133476: Assert with the PyStackRef_IsTaggedInt function #133477

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f874ebf
Assert with PyStackRef_IsTaggedInt function
nybblista May 5, 2025
a57a599
Merge branch 'main' into stackref-is-tagged-int
iritkatriel May 6, 2025
e742299
Assert PyStackRef_AsPyObjectBorrow is not a tagged integer
nybblista May 7, 2025
4fc190f
Merge branch 'main' into stackref-is-tagged-int
Fidget-Spinner May 8, 2025
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16 changes: 8 additions & 8 deletions Include/internal/pycore_stackref.h
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Original file line number Diff line number Diff line change
Expand Up @@ -95,10 +95,16 @@ PyStackRef_IsNone(_PyStackRef ref)
return _Py_stackref_get_object(ref) == Py_None;
}

static inline bool
PyStackRef_IsTaggedInt(_PyStackRef ref)
{
return (ref.index & 1) == 1;
}

static inline PyObject *
_PyStackRef_AsPyObjectBorrow(_PyStackRef ref, const char *filename, int linenumber)
{
assert((ref.index & 1) == 0);
assert(!PyStackRef_IsTaggedInt(ref));
_Py_stackref_record_borrow(ref, filename, linenumber);
return _Py_stackref_get_object(ref);
}
Expand Down Expand Up @@ -135,12 +141,6 @@ _PyStackRef_FromPyObjectImmortal(PyObject *obj, const char *filename, int linenu
}
#define PyStackRef_FromPyObjectImmortal(obj) _PyStackRef_FromPyObjectImmortal(_PyObject_CAST(obj), __FILE__, __LINE__)

static inline bool
PyStackRef_IsTaggedInt(_PyStackRef ref)
{
return (ref.index & 1) == 1;
}

static inline void
_PyStackRef_CLOSE(_PyStackRef ref, const char *filename, int linenumber)
{
Expand Down Expand Up @@ -256,7 +256,7 @@ PyStackRef_TagInt(intptr_t i)
static inline intptr_t
PyStackRef_UntagInt(_PyStackRef i)
{
assert((i.bits & Py_INT_TAG) == Py_INT_TAG);
assert(PyStackRef_IsTaggedInt(i));
intptr_t val = (intptr_t)i.bits;
return Py_ARITHMETIC_RIGHT_SHIFT(intptr_t, val, 2);
}
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