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[mypyc] Fix i16 on Python 3.12 #15510

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Jun 25, 2023
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[mypyc] Fix i16 on Python 3.12 #15510

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13 changes: 13 additions & 0 deletions mypyc/lib-rt/int_ops.c
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Original file line number Diff line number Diff line change
Expand Up @@ -654,6 +654,18 @@ void CPyInt32_Overflow() {

int16_t CPyLong_AsInt16(PyObject *o) {
if (likely(PyLong_Check(o))) {
#if CPY_3_12_FEATURES
PyLongObject *lobj = (PyLongObject *)o;
size_t tag = CPY_LONG_TAG(lobj);
if (likely(tag == (1 << CPY_NON_SIZE_BITS))) {
// Fast path
digit x = CPY_LONG_DIGIT(lobj, 0);
if (x < 0x8000)
return x;
} else if (likely(tag == CPY_SIGN_ZERO)) {
return 0;
}
#else
PyLongObject *lobj = (PyLongObject *)o;
Py_ssize_t size = lobj->ob_base.ob_size;
if (likely(size == 1)) {
Expand All @@ -664,6 +676,7 @@ int16_t CPyLong_AsInt16(PyObject *o) {
} else if (likely(size == 0)) {
return 0;
}
#endif
}
// Slow path
int overflow;
Expand Down