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

2 files changed, 4 insertions, 4 deletions

diff --git a/src/libsyntax_ext/deriving/clone.rs b/src/libsyntax_ext/deriving/clone.rs
index b347092e1bc..1b0d572324a 100644
--- a/src/libsyntax_ext/deriving/clone.rs
+++ b/src/libsyntax_ext/deriving/clone.rs
@@ -7,7 +7,7 @@ use syntax::attr;
 use syntax::ext::base::{Annotatable, ExtCtxt};
 use syntax::ext::build::AstBuilder;
 use syntax::ptr::P;
-use syntax::symbol::{Symbol, keywords};
+use syntax::symbol::{Symbol, keywords, sym};
 use syntax_pos::Span;
 
 pub fn expand_deriving_clone(cx: &mut ExtCtxt<'_>,
@@ -37,7 +37,7 @@ pub fn expand_deriving_clone(cx: &mut ExtCtxt<'_>,
             match annitem.node {
                 ItemKind::Struct(_, Generics { ref params, .. }) |
                 ItemKind::Enum(_, Generics { ref params, .. }) => {
-                    if attr::contains_name(&annitem.attrs, "rustc_copy_clone_marker") &&
+                    if attr::contains_name(&annitem.attrs, sym::rustc_copy_clone_marker) &&
                         !params.iter().any(|param| match param.kind {
                             ast::GenericParamKind::Type { .. } => true,
                             _ => false,
diff --git a/src/libsyntax_ext/deriving/generic/mod.rs b/src/libsyntax_ext/deriving/generic/mod.rs
index e5939e396e5..228862c830f 100644
--- a/src/libsyntax_ext/deriving/generic/mod.rs
+++ b/src/libsyntax_ext/deriving/generic/mod.rs
@@ -191,7 +191,7 @@ use syntax::ext::build::AstBuilder;
 use syntax::source_map::{self, respan};
 use syntax::util::map_in_place::MapInPlace;
 use syntax::ptr::P;
-use syntax::symbol::{Symbol, keywords};
+use syntax::symbol::{Symbol, keywords, sym};
 use syntax::parse::ParseSess;
 use syntax_pos::{DUMMY_SP, Span};
 
@@ -426,7 +426,7 @@ impl<'a> TraitDef<'a> {
                     }
                 };
                 let is_always_copy =
-                    attr::contains_name(&item.attrs, "rustc_copy_clone_marker") &&
+                    attr::contains_name(&item.attrs, sym::rustc_copy_clone_marker) &&
                     has_no_type_params;
                 let use_temporaries = is_packed && is_always_copy;