syntax_data: {"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // <https://github.com/rust-lang/unsafe-code-guidelines/issues/381>). If LLVM had a way
context_before:             // potentially self-referential types (see
context_after:             // to say "dereferenceable on entry" we could use it here.