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-rw-r--r--Python/ceval.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/Python/ceval.c b/Python/ceval.c
index 8738470..298ad55 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -5039,6 +5039,8 @@ _PyFunction_FastCallDict(PyObject *func, PyObject **args, Py_ssize_t nargs,
if (nk != 0) {
Py_ssize_t pos, i;
+ /* Issue #29318: Caller and callee functions must not share the
+ dictionary: kwargs must be copied. */
kwtuple = PyTuple_New(2 * nk);
if (kwtuple == NULL) {
return NULL;