Pass a `Symbol` to `check_name`, `emit_feature_err`, and related functions.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libsyntax_ext/trace_macros.rs b/src/libsyntax_ext/trace_macros.rs
index 4d35daf3de9..eca658cb547 100644
--- a/src/libsyntax_ext/trace_macros.rs
+++ b/src/libsyntax_ext/trace_macros.rs
@@ -1,6 +1,6 @@
 use syntax::ext::base::{self, ExtCtxt};
 use syntax::feature_gate;
-use syntax::symbol::keywords;
+use syntax::symbol::{keywords, sym};
 use syntax_pos::Span;
 use syntax::tokenstream::TokenTree;
 
@@ -10,7 +10,7 @@ pub fn expand_trace_macros(cx: &mut ExtCtxt<'_>,
                            -> Box<dyn base::MacResult + 'static> {
     if !cx.ecfg.enable_trace_macros() {
         feature_gate::emit_feature_err(&cx.parse_sess,
-                                       "trace_macros",
+                                       sym::trace_macros,
                                        sp,
                                        feature_gate::GateIssue::Language,
                                        feature_gate::EXPLAIN_TRACE_MACROS);