Merge from rustc

1 files changed, 6 insertions, 3 deletions

diff --git a/src/tools/rustfmt/src/patterns.rs b/src/tools/rustfmt/src/patterns.rs
index 0fa6edaa5d7..7f576279432 100644
--- a/src/tools/rustfmt/src/patterns.rs
+++ b/src/tools/rustfmt/src/patterns.rs
@@ -40,9 +40,11 @@ pub(crate) fn is_short_pattern(pat: &ast::Pat, pat_str: &str) -> bool {
 
 fn is_short_pattern_inner(pat: &ast::Pat) -> bool {
     match pat.kind {
-        ast::PatKind::Rest | ast::PatKind::Never | ast::PatKind::Wild | ast::PatKind::Lit(_) => {
-            true
-        }
+        ast::PatKind::Rest
+        | ast::PatKind::Never
+        | ast::PatKind::Wild
+        | ast::PatKind::Err(_)
+        | ast::PatKind::Lit(_) => true,
         ast::PatKind::Ident(_, _, ref pat) => pat.is_none(),
         ast::PatKind::Struct(..)
         | ast::PatKind::MacCall(..)
@@ -274,6 +276,7 @@ impl Rewrite for Pat {
             PatKind::Paren(ref pat) => pat
                 .rewrite(context, shape.offset_left(1)?.sub_width(1)?)
                 .map(|inner_pat| format!("({})", inner_pat)),
+            PatKind::Err(_) => None,
         }
     }
 }