Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/src/test/ui/consts/const-mut-refs/const_mut_refs.rs b/src/test/ui/consts/const-mut-refs/const_mut_refs.rs
new file mode 100644
index 000000000..544458dfc
--- /dev/null
+++ b/src/test/ui/consts/const-mut-refs/const_mut_refs.rs
@@ -0,0 +1,35 @@
+// check-pass
+#![feature(const_mut_refs)]
+
+struct Foo {
+    x: usize
+}
+
+const fn foo() -> Foo {
+    Foo { x: 0 }
+}
+
+impl Foo {
+    const fn bar(&mut self) -> usize {
+        self.x = 1;
+        self.x
+    }
+
+}
+
+const fn baz(foo: &mut Foo) -> usize {
+    let x = &mut foo.x;
+    *x = 2;
+    *x
+}
+
+const fn bazz(foo: &mut Foo) -> usize {
+    foo.x = 3;
+    foo.x
+}
+
+fn main() {
+    let _: [(); foo().bar()] = [(); 1];
+    let _: [(); baz(&mut foo())] = [(); 2];
+    let _: [(); bazz(&mut foo())] = [(); 3];
+}