syntax_data: {"ast_node_type":"other","tokens":[{"end":27,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if !path.exists() {
context_before:     if let Some(ref path) = sess.opts.unstable_opts.profile_sample_use {
context_after:             sess.dcx().emit_err(errors::ProfileSampleUseFileDoesNotExist { path });