Add `ast::ExprKind::Dummy`

2 files changed, 2 insertions, 1 deletions

diff --git a/src/tools/rustfmt/src/expr.rs b/src/tools/rustfmt/src/expr.rs
index 4b86c2acdc5..d46d7c53bdb 100644
--- a/src/tools/rustfmt/src/expr.rs
+++ b/src/tools/rustfmt/src/expr.rs
@@ -404,7 +404,7 @@ pub(crate) fn format_expr(
             // These do not occur in the AST because macros aren't expanded.
             unreachable!()
         }
-        ast::ExprKind::Err => None,
+        ast::ExprKind::Err | ast::ExprKind::Dummy => None,
     };
 
     expr_rw
diff --git a/src/tools/rustfmt/src/utils.rs b/src/tools/rustfmt/src/utils.rs
index 642b6603b1e..b6b37e492e9 100644
--- a/src/tools/rustfmt/src/utils.rs
+++ b/src/tools/rustfmt/src/utils.rs
@@ -497,6 +497,7 @@ pub(crate) fn is_block_expr(context: &RewriteContext<'_>, expr: &ast::Expr, repr
         | ast::ExprKind::Break(..)
         | ast::ExprKind::Cast(..)
         | ast::ExprKind::Continue(..)
+        | ast::ExprKind::Dummy
         | ast::ExprKind::Err
         | ast::ExprKind::Field(..)
         | ast::ExprKind::IncludedBytes(..)