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-rw-r--r--src/librustc/ich/mod.rs20
1 files changed, 11 insertions, 9 deletions
diff --git a/src/librustc/ich/mod.rs b/src/librustc/ich/mod.rs
index b407b75e68c..f3fc7ec8fda 100644
--- a/src/librustc/ich/mod.rs
+++ b/src/librustc/ich/mod.rs
@@ -4,6 +4,8 @@ crate use rustc_data_structures::fingerprint::Fingerprint;
 pub use self::caching_source_map_view::CachingSourceMapView;
 pub use self::hcx::{StableHashingContextProvider, StableHashingContext, NodeIdHashingMode,
                     hash_stable_trait_impls};
+use syntax::symbol::{Symbol, sym};
+
 mod caching_source_map_view;
 mod hcx;
 
@@ -12,16 +14,16 @@ mod impls_misc;
 mod impls_ty;
 mod impls_syntax;
 
-pub const ATTR_DIRTY: &str = "rustc_dirty";
-pub const ATTR_CLEAN: &str = "rustc_clean";
-pub const ATTR_IF_THIS_CHANGED: &str = "rustc_if_this_changed";
-pub const ATTR_THEN_THIS_WOULD_NEED: &str = "rustc_then_this_would_need";
-pub const ATTR_PARTITION_REUSED: &str = "rustc_partition_reused";
-pub const ATTR_PARTITION_CODEGENED: &str = "rustc_partition_codegened";
-pub const ATTR_EXPECTED_CGU_REUSE: &str = "rustc_expected_cgu_reuse";
+pub const ATTR_DIRTY: Symbol = sym::rustc_dirty;
+pub const ATTR_CLEAN: Symbol = sym::rustc_clean;
+pub const ATTR_IF_THIS_CHANGED: Symbol = sym::rustc_if_this_changed;
+pub const ATTR_THEN_THIS_WOULD_NEED: Symbol = sym::rustc_then_this_would_need;
+pub const ATTR_PARTITION_REUSED: Symbol = sym::rustc_partition_reused;
+pub const ATTR_PARTITION_CODEGENED: Symbol = sym::rustc_partition_codegened;
+pub const ATTR_EXPECTED_CGU_REUSE: Symbol = sym::rustc_expected_cgu_reuse;
 
-pub const IGNORED_ATTRIBUTES: &[&str] = &[
-    "cfg",
+pub const IGNORED_ATTRIBUTES: &[Symbol] = &[
+    sym::cfg,
     ATTR_IF_THIS_CHANGED,
     ATTR_THEN_THIS_WOULD_NEED,
     ATTR_DIRTY,