Auto merge of #101611 - GuillaumeGomez:rollup-yw3qtug, r=GuillaumeGomez

Rollup of 5 pull requests

Successful merges:

 - #101475 (Use futex-based locks and thread parker on Hermit)
 - #101492 (Suggest adding array lengths to references to arrays if possible)
 - #101495 (Compile spin_loop_hint as pause on x86 even without sse2 enabled)
 - #101529 (Fix the example code and doctest for Formatter::sign_plus)
 - #101600 (rustdoc: simplify the codeblock tooltip)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

1 files changed, 12 insertions, 0 deletions

diff --git a/src/test/ui/array-slice-vec/suggest-array-length.fixed b/src/test/ui/array-slice-vec/suggest-array-length.fixed
index bae3ab74af6..867c18a7d5e 100644
--- a/src/test/ui/array-slice-vec/suggest-array-length.fixed
+++ b/src/test/ui/array-slice-vec/suggest-array-length.fixed
@@ -5,10 +5,22 @@ fn main() {
     const Foo: [i32; 3] = [1, 2, 3];
     //~^ ERROR in expressions, `_` can only be used on the left-hand side of an assignment
     //~| ERROR using `_` for array lengths is unstable
+    const REF_FOO: &[u8; 1] = &[1];
+    //~^ ERROR in expressions, `_` can only be used on the left-hand side of an assignment
+    //~| ERROR using `_` for array lengths is unstable
     let foo: [i32; 3] = [1, 2, 3];
     //~^ ERROR in expressions, `_` can only be used on the left-hand side of an assignment
     //~| ERROR using `_` for array lengths is unstable
     let bar: [i32; 3] = [0; 3];
     //~^ ERROR in expressions, `_` can only be used on the left-hand side of an assignment
     //~| ERROR using `_` for array lengths is unstable
+    let ref_foo: &[i32; 3] = &[1, 2, 3];
+    //~^ ERROR in expressions, `_` can only be used on the left-hand side of an assignment
+    //~| ERROR using `_` for array lengths is unstable
+    let ref_bar: &[i32; 3] = &[0; 3];
+    //~^ ERROR in expressions, `_` can only be used on the left-hand side of an assignment
+    //~| ERROR using `_` for array lengths is unstable
+    let multiple_ref_foo: &&[i32; 3] = &&[1, 2, 3];
+    //~^ ERROR in expressions, `_` can only be used on the left-hand side of an assignment
+    //~| ERROR using `_` for array lengths is unstable
 }