syntax_data: {"ast_node_type":"other","tokens":[{"end":41,"kind":"keyword","start":0,"text":"ty::tls::with(|tcx|"}]}
source_snippet:                     ty::tls::with(|tcx| {
context_before:                     // FIXME(@dianne): prevent ill-formed patterns from getting here
context_after:                         tcx.dcx().delayed_bug("mismatched or-pattern bindings but no error emitted")