Rollup merge of #66197 - Centril:transparent-ast, r=varkor

[rust.git] / src / librustc_resolve / late.rs

diff --git a/src/librustc_resolve/late.rs b/src/librustc_resolve/late.rs
index 1316f8d8aa1af70f852f1ae7e1dab7ccad38f654..8d11c7224c7044b9e1432004b96097373728c88c 100644 (file)
--- a/src/librustc_resolve/late.rs
+++ b/src/librustc_resolve/late.rs
@@ -30,6 +30,8 @@
 use std::collections::BTreeSet;
 use std::mem::replace;
 
+use rustc_error_codes::*;
+
 mod diagnostics;
 
 type Res = def::Res<NodeId>;
@@ -1752,7 +1754,9 @@ fn resolve_qpath(
 
     fn with_resolved_label(&mut self, label: Option<Label>, id: NodeId, f: impl FnOnce(&mut Self)) {
         if let Some(label) = label {
-            self.diagnostic_metadata.unused_labels.insert(id, label.ident.span);
+            if label.ident.as_str().as_bytes()[1] != b'_' {
+                self.diagnostic_metadata.unused_labels.insert(id, label.ident.span);
+            }
             self.with_label_rib(NormalRibKind, |this| {
                 let ident = label.ident.modern_and_legacy();
                 this.label_ribs.last_mut().unwrap().bindings.insert(ident, id);