move_ref_patterns: introduce tests

bindings_after_at: harden tests

Author: Centril

src/test/ui/bind-by-move/bind-by-move-neither-can-live-while-the-other-survives-2.rs

@@ -7,6 +7,8 @@
 // edition:2018
 // ignore-wasm32-bare compiled with panic=abort by default
 
+#![feature(move_ref_pattern)]
+
 #![allow(unused)]
 
 use std::{
@@ -227,6 +229,12 @@ async fn subslice_pattern_reassign(a: Rc<Allocator>) {
     a.alloc().await;
 }
 
+async fn move_ref_pattern(a: Rc<Allocator>) {
+    let mut tup = (a.alloc().await, a.alloc().await, a.alloc().await, a.alloc().await);
+    let (ref _a, ref mut _b, _c, mut _d) = tup;
+    a.alloc().await;
+}
+
 fn run_test<F, G>(cx: &mut Context<'_>, ref f: F)
 where
     F: Fn(Rc<Allocator>) -> G,
@@ -322,4 +330,6 @@ fn main() {
     run_test(context, |a| subslice_pattern_from_end_with_drop(a, false, true));
     run_test(context, |a| subslice_pattern_from_end_with_drop(a, false, false));
     run_test(context, |a| subslice_pattern_reassign(a));
+
+    run_test(context, |a| move_ref_pattern(a));
 }

src/test/ui/bind-by-move/bind-by-move-neither-can-live-while-the-other-survives-2.stderr

@@ -2,6 +2,7 @@
 // ignore-wasm32-bare compiled with panic=abort by default
 
 #![feature(generators, generator_trait, untagged_unions)]
+#![feature(move_ref_pattern)]
 
 #![allow(unused_assignments)]
 #![allow(unused_variables)]
@@ -290,6 +291,11 @@ fn subslice_mixed_min_lengths(a: &Allocator, c: i32) {
     }
 }
 
+fn move_ref_pattern(a: &Allocator) {
+    let mut tup = (a.alloc(), a.alloc(), a.alloc(), a.alloc());
+    let (ref _a, ref mut _b, _c, mut _d) = tup;
+}
+
 fn panic_after_return(a: &Allocator) -> Ptr<'_> {
     // Panic in the drop of `p` or `q` can leak
     let exceptions = vec![8, 9];
@@ -453,6 +459,8 @@ fn main() {
     run_test(|a| subslice_mixed_min_lengths(a, 6));
     run_test(|a| subslice_mixed_min_lengths(a, 7));
 
+    run_test(|a| move_ref_pattern(a));
+
     run_test(|a| {
         panic_after_return(a);
     });