1 files changed, 11 insertions, 0 deletions
diff --git a/src/librustc_errors/diagnostic.rs b/src/librustc_errors/diagnostic.rs
index a323282f233..ea425ad4c47 100644
--- a/src/librustc_errors/diagnostic.rs
+++ b/src/librustc_errors/diagnostic.rs
@@ -139,6 +139,17 @@ impl Diagnostic {
         self
     }
 
+    pub fn replace_span_with(&mut self, after: Span) -> &mut Self {
+        let before = self.span.clone();
+        self.set_span(after);
+        for span_label in before.span_labels() {
+            if let Some(label) = span_label.label {
+                self.span_label(after, label);
+            }
+        }
+        self
+    }
+
     pub fn note_expected_found(&mut self,
                                label: &dyn fmt::Display,
                                expected: DiagnosticStyledString,