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-rw-r--r--compiler/rustc_errors/src/lib.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/rustc_errors/src/lib.rs b/compiler/rustc_errors/src/lib.rs
index 73ddf507723..9800ed9bfa9 100644
--- a/compiler/rustc_errors/src/lib.rs
+++ b/compiler/rustc_errors/src/lib.rs
@@ -83,6 +83,10 @@ impl ToolMetadata {
     fn new(json: Json) -> Self {
         ToolMetadata(Some(json))
     }
+
+    fn is_set(&self) -> bool {
+        self.0.is_some()
+    }
 }
 
 impl Hash for ToolMetadata {