From 7f98bef37f7dbb43d1a1eaad8cd19529173b35cd Mon Sep 17 00:00:00 2001
From: yukang <moorekang@gmail.com>
Date: Thu, 16 Mar 2023 07:00:55 +0800
Subject: [PATCH] fix doc test in mir_build for removing type ascription

---
 compiler/rustc_mir_build/src/thir/pattern/usefulness.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/compiler/rustc_mir_build/src/thir/pattern/usefulness.rs b/compiler/rustc_mir_build/src/thir/pattern/usefulness.rs
index d8f66a1755b..f229b10c447 100644
--- a/compiler/rustc_mir_build/src/thir/pattern/usefulness.rs
+++ b/compiler/rustc_mir_build/src/thir/pattern/usefulness.rs
@@ -685,10 +685,9 @@ enum ArmType {
 /// For example, if we are constructing a witness for the match against
 ///
 /// ```compile_fail,E0004
-/// # #![feature(type_ascription)]
 /// struct Pair(Option<(u32, u32)>, bool);
 /// # fn foo(p: Pair) {
-/// match (p: Pair) {
+/// match p {
 ///    Pair(None, _) => {}
 ///    Pair(_, false) => {}
 /// }