bpo-33199: Initialize ma_version_tag in PyDict_Copy (GH-6341) · python/cpython@9a90826 (original) (raw)

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2 files changed

lines changed

Misc/NEWS.d/next/Core and Builtins

2 files changed

lines changed

Original file line number	Diff line number	Diff line change
@@ -0,0 +1,2 @@
	1	+Fix ``ma_version_tag`` in dict implementation is uninitialized when copying
	2	+from key-sharing dict.

Original file line number	Diff line number	Diff line change
@@ -2654,6 +2654,7 @@ PyDict_Copy(PyObject *o)
2654	2654	split_copy->ma_values = newvalues;
2655	2655	split_copy->ma_keys = mp->ma_keys;
2656	2656	split_copy->ma_used = mp->ma_used;
	2657	+split_copy->ma_version_tag = DICT_NEXT_VERSION();
2657	2658	DK_INCREF(mp->ma_keys);
2658	2659	for (i = 0, n = size; i < n; i++) {
2659	2660	PyObject *value = mp->ma_values[i];