Update rustdoc

Author: oli-obk

src/librustdoc/clean/utils.rs

@@ -481,8 +481,8 @@ pub fn print_const(cx: &DocContext<'_>, n: &'tcx ty::Const<'_>) -> String {
         _ => {
             let mut s = n.to_string();
             // array lengths are obviously usize
-            if s.ends_with("usize") {
-                let n = s.len() - "usize".len();
+            if s.ends_with("_usize") {
+                let n = s.len() - "_usize".len();
                 s.truncate(n);
                 if s.ends_with(": ") {
                     let n = s.len() - ": ".len();

src/test/rustdoc/const-generics/add-impl.rs

@@ -1,7 +1,6 @@
 // ignore-tidy-linelength
 
 #![feature(const_generics)]
-
 #![crate_name = "foo"]
 
 use std::ops::Add;
@@ -11,7 +10,7 @@ pub struct Simd<T, const WIDTH: usize> {
     inner: T,
 }
 
-// @has foo/struct.Simd.html '//div[@id="trait-implementations-list"]/h3/code' 'impl Add<Simd<u8, 16usize>> for Simd<u8, 16>'
+// @has foo/struct.Simd.html '//div[@id="trait-implementations-list"]/h3/code' 'impl Add<Simd<u8, 16_usize>> for Simd<u8, 16>'
 impl Add for Simd<u8, 16> {
     type Output = Self;