1 files changed, 2 insertions, 1 deletions
diff --git a/src/librustc/session/mod.rs b/src/librustc/session/mod.rs
index e8c7965ab4f..4d47491661e 100644
--- a/src/librustc/session/mod.rs
+++ b/src/librustc/session/mod.rs
@@ -29,6 +29,7 @@ use syntax::feature_gate::{self, AttributeType};
 use syntax::json::JsonEmitter;
 use syntax::source_map;
 use syntax::parse::{self, ParseSess};
+use syntax::symbol::Symbol;
 use syntax_pos::{MultiSpan, Span};
 use crate::util::profiling::SelfProfiler;
 
@@ -86,7 +87,7 @@ pub struct Session {
     /// in order to avoid redundantly verbose output (Issue #24690, #44953).
     pub one_time_diagnostics: Lock<FxHashSet<(DiagnosticMessageId, Option<Span>, String)>>,
     pub plugin_llvm_passes: OneThread<RefCell<Vec<String>>>,
-    pub plugin_attributes: Lock<Vec<(String, AttributeType)>>,
+    pub plugin_attributes: Lock<Vec<(Symbol, AttributeType)>>,
     pub crate_types: Once<Vec<config::CrateType>>,
     pub dependency_formats: Once<dependency_format::Dependencies>,
     /// The crate_disambiguator is constructed out of all the `-C metadata`