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Author: picnixz

Objects/memoryobject.c

@@ -2349,6 +2349,9 @@ memoryview_hex_impl(PyMemoryViewObject *self, PyObject *sep,
     CHECK_RELEASED(self);
 
     if (MV_C_CONTIGUOUS(self->flags)) {
+        // Prevent 'self' from being freed if computing len(sep) mutates 'self'
+        // in _Py_strhex_with_sep().
+        // See: https://github.com/python/cpython/issues/143195.
         self->exports++;
         PyObject *ret = _Py_strhex_with_sep(src->buf, src->len, sep, bytes_per_sep);
         self->exports--;