vstinner
commented
6 years ago Coverity found a bug in hamt.c:
** CID 1428443: Null pointer dereferences (NULL_RETURNS) /Python/hamt.c: 1058 in hamt_node_bitmap_without()
________________________________________________________________________________________________________
*** CID 1428443: Null pointer dereferences (NULL_RETURNS)
/Python/hamt.c: 1058 in hamt_node_bitmap_without()
1052 assert(hamt_node_collision_count(
1053 (PyHamtNode_Collision*)sub_node) > 1);
1054 }
1055 #endif
1056
1057 PyHamtNode_Bitmap *clone = hamt_node_bitmap_clone(self);
>>> CID 1428443: Null pointer dereferences (NULL_RETURNS)
>>> Dereferencing a null pointer "clone".
1058 Py_SETREF(clone->b_array[val_idx],
1059 (PyObject *)sub_node); /* borrow */
1060
1061 *new_node = (PyHamtNode *)clone;
1062 return W_NEWNODE;
1063 }
1st1
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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GitHub fields: ```python assignee = None closed_at =
created_at =
labels = ['interpreter-core', 'type-bug', '3.7']
title = 'Coverity: CID 1428443: Null pointer dereferences (NULL_RETURNS) /Python/hamt.c: 1058 in hamt_node_bitmap_without()'
updated_at =
user = 'https://github.com/vstinner'
```
bugs.python.org fields:
```python
activity =
actor = 'yselivanov'
assignee = 'none'
closed = True
closed_date =
closer = 'yselivanov'
components = ['Interpreter Core']
creation =
creator = 'vstinner'
dependencies = []
files = []
hgrepos = []
issue_num = 32639
keywords = []
message_count = 4.0
messages = ['310522', '310524', '310526', '310527']
nosy_count = 2.0
nosy_names = ['vstinner', 'yselivanov']
pr_nums = []
priority = 'normal'
resolution = 'out of date'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue32639'
versions = ['Python 3.7']
```