syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:             if !limit.value_within_limit(depth) {
context_before:         while let ty::Alias(ty::Free, alias) = ty.kind() {
context_after:                 let guar = self.dcx().delayed_bug("overflow expanding free alias type");