syntax_data: {"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"sess.dcx().emit_err(errors::UnsupportedRegparm"}]}
source_snippet:             sess.dcx().emit_err(errors::UnsupportedRegparm { regparm });
context_before:         if regparm > 3 {
context_after:         }