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-rw-r--r--src/libsyntax/sess.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libsyntax/sess.rs b/src/libsyntax/sess.rs
index 58a2f89aca9..3d2051b4c78 100644
--- a/src/libsyntax/sess.rs
+++ b/src/libsyntax/sess.rs
@@ -36,6 +36,8 @@ crate struct GatedSpans {
     pub associated_type_bounds: Lock<Vec<Span>>,
     /// Spans collected for gating `crate_visibility_modifier`, e.g. `crate fn`.
     pub crate_visibility_modifier: Lock<Vec<Span>>,
+    /// Spans collected for gating `const_generics`, e.g. `const N: usize`.
+    pub const_generics: Lock<Vec<Span>>,
 }
 
 /// Info about a parsing session.