syntax_data: {"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // There should be an existing terminator with real source info and a
context_before:     fn link_entry_point(cfg: &mut CFG<'tcx>, from: BasicBlock, to: BasicBlock) {
context_after:         // dummy TerminatorKind. Replace it with a proper goto.