--- a/clang/test/Sema/c2x-fallthrough.c	Mon May 25 11:55:54 2020 +0900
+++ b/clang/test/Sema/c2x-fallthrough.c	Tue Jun 08 06:07:14 2021 +0900
@@ -57,7 +57,7 @@
 [[fallthrough]] // expected-error {{'fallthrough' attribute cannot be applied to a declaration}}
 void g(void) {
   [[fallthrough]] int n; // expected-error {{'fallthrough' attribute cannot be applied to a declaration}}
-  [[fallthrough]] ++n; // expected-error-re {{{{^}}fallthrough attribute is only allowed on empty statements}}
+  [[fallthrough]] ++n; // expected-error {{'fallthrough' attribute only applies to empty statements}}
 
   switch (n) {
     // FIXME: This should be an error.
@@ -65,7 +65,7 @@
     return;
 
   case 0:
-    [[fallthrough, fallthrough]]; // expected-error {{multiple times}}
+    [[fallthrough, fallthrough]]; // ok
   case 1:
     [[fallthrough(0)]]; // expected-error {{argument list}}
   case 2: