10000 bpo-34100: Partially revert merge_consts_recursive() by vstinner · Pull Request #10743 · python/cpython · GitHub
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bpo-34100: Partially revert merge_consts_recursive() #10743

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Merged
merged 2 commits into from
Nov 27, 2018
Merged

bpo-34100: Partially revert merge_consts_recursive() #10743

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bpo-34100: Partially revert merge_consts_recursive()
vstinner Nov 27, 2018
7a4d7a5
Remove also the unit test
vstinner Nov 27, 2018
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50 changes: 0 additions & 50 deletions Python/compile.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1240,56 +1240,6 @@ merge_consts_recursive(struct compiler *c, PyObject *o)
Py_DECREF(u);
}
}
else if (PyFrozenSet_CheckExact(o)) {
// We register items in the frozenset, but don't rewrite
// the frozenset when the item is already registered
// because frozenset is rare and difficult.

// *key* is tuple. And it's first item is frozenset of
// constant keys.
// See _PyCode_ConstantKey() for detail.
assert(PyTuple_CheckExact(key));
assert(PyTuple_GET_SIZE(key) == 2);

Py_ssize_t len = PySet_GET_SIZE(o);
if (len == 0) {
return key;
}
PyObject *tuple = PyTuple_New(len);
if (tuple == NULL) {
Py_DECREF(key);
return NULL;
}
Py_ssize_t i = 0, pos = 0;
PyObject *item;
Py_hash_t hash;
while (_PySet_NextEntry(o, &pos, &item, &hash)) {
PyObject *k = merge_consts_recursive(c, item);
if (k == NULL) {
Py_DECREF(tuple);
Py_DECREF(key);
return NULL;
}
PyObject *u;
if (PyTuple_CheckExact(k)) {
u = PyTuple_GET_ITEM(k, 1);
}
else {
u = k;
}
Py_INCREF(u);
PyTuple_SET_ITEM(tuple, i, u);
i++;
}

PyObject *new = PyFrozenSet_New(tuple);
Py_DECREF(tuple);
if (new == NULL) {
Py_DECREF(key);
return NULL;
}
PyTuple_SET_ITEM(key, 1, new);
}

return key;
}
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