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-rw-r--r--compiler/rustc_driver_impl/src/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_driver_impl/src/lib.rs b/compiler/rustc_driver_impl/src/lib.rs
index 8ede6e41336..3aa9a75d893 100644
--- a/compiler/rustc_driver_impl/src/lib.rs
+++ b/compiler/rustc_driver_impl/src/lib.rs
@@ -259,6 +259,7 @@ pub fn run_compiler(at_args: &[String], callbacks: &mut (dyn Callbacks + Send))
         hash_untracked_state: None,
         register_lints: None,
         override_queries: None,
+        extra_symbols: Vec::new(),
         make_codegen_backend: None,
         registry: diagnostics_registry(),
         using_internal_features: &USING_INTERNAL_FEATURES,