syntax_data: {"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // Borrows pointing to "null" are UB even if the pointee is a ZST.
context_before:     let pointee_should_be_checked = match context {
context_after:         PlaceContext::NonMutatingUse(NonMutatingUseContext::SharedBorrow)