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patch 9.0.0949: crash when unletting a variable while listing variables

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Problem:    Crash when unletting a variable while listing variables.
Solution:   Disallow changing a hashtable while going over the entries.
            (closes #11435)
This commit is contained in:
Bram Moolenaar
2022-11-25 16:31:51 +00:00
parent c1cf4c9107
commit ef2c325f5e
21 changed files with 143 additions and 68 deletions
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6
src/if_py_both.h
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@@ -1768,7 +1768,7 @@ _DictionaryItem(DictionaryObject *self, PyObject *args, int flags)
return NULL;
}
hash_remove(&dict->dv_hashtab, hi);
hash_remove(&dict->dv_hashtab, hi, "Python remove variable");
dictitem_free(di);
}
@@ -1893,7 +1893,7 @@ DictionaryAssItem(
return -1;
}
hi = hash_find(&dict->dv_hashtab, di->di_key);
hash_remove(&dict->dv_hashtab, hi);
hash_remove(&dict->dv_hashtab, hi, "Python remove item");
dictitem_free(di);
Py_XDECREF(todecref);
return 0;
@@ -2194,7 +2194,7 @@ DictionaryPopItem(DictionaryObject *self, PyObject *args UNUSED)
return NULL;
}
hash_remove(&self->dict->dv_hashtab, hi);
hash_remove(&self->dict->dv_hashtab, hi, "Python pop item");
dictitem_free(di);
return ret;