1 files changed, 6 insertions, 0 deletions
diff --git a/compiler/rustc_session/src/errors.rs b/compiler/rustc_session/src/errors.rs
index f5a72573d58..8e8fba5e236 100644
--- a/compiler/rustc_session/src/errors.rs
+++ b/compiler/rustc_session/src/errors.rs
@@ -375,3 +375,9 @@ pub fn report_lit_error(sess: &ParseSess, err: LitError, lit: token::Lit, span:
         }
     }
 }
+
+#[derive(Diagnostic)]
+#[diag(session_optimization_fuel_exhausted)]
+pub struct OptimisationFuelExhausted {
+    pub msg: String,
+}