syntax_data: {"ast_node_type":"other","tokens":[{"end":3,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: ///
context_before: /// replaced by `copy _a`, as we cannot move multiple times from `_a`.
context_after: /// If an operand copies `_c`, it must happen before the assignment `_d = _c`, otherwise it is UB.