1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs
index 1ad637451b1..89f28777bff 100644
--- a/compiler/rustc_parse/src/parser/expr.rs
+++ b/compiler/rustc_parse/src/parser/expr.rs
@@ -3949,7 +3949,8 @@ impl MutVisitor for CondChecker<'_> {
             | ExprKind::Become(_)
             | ExprKind::IncludedBytes(_)
             | ExprKind::FormatArgs(_)
-            | ExprKind::Err => {
+            | ExprKind::Err
+            | ExprKind::Dummy => {
                 // These would forbid any let expressions they contain already.
             }
         }