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bpo-36452: dictiter: track maximum iteration count (GH-12596)

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Thomas Perl 2019-03-28 07:03:25 +01:00 • committed by Inada Naoki
parent 738cb42a14
commit 796cc6e3ad
3 changed files with 16 additions and 0 deletions
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6
Objects/dictobject.c
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@ -3543,6 +3543,12 @@ dictiter_iternextkey(dictiterobject *di)
goto fail;
key = entry_ptr->me_key;
}
// We found an element (key), but did not expect it
if (di->len == 0) {
PyErr_SetString(PyExc_RuntimeError,
"dictionary keys changed during iteration");
goto fail;
}
di->di_pos = i+1;
di->len--;
Py_INCREF(key);