Auto merge of #81507 - weiznich:add_diesel_to_cargo_test, r=Mark-Simulacrum

[rust.git] / src / test / ui / uninit-empty-types.rs

diff --git a/src/test/ui/uninit-empty-types.rs b/src/test/ui/uninit-empty-types.rs
index 0d1235776a6ef7574e8d48286067ed836c28e0d4..b21de882b2ceb95bf684c52824106c438dab6b58 100644 (file)
--- a/src/test/ui/uninit-empty-types.rs
+++ b/src/test/ui/uninit-empty-types.rs
@@ -1,17 +1,19 @@
-// run-pass
+// build-pass
 // Test the uninit() construct returning various empty types.
 
 // pretty-expanded FIXME #23616
 
-use std::mem;
+use std::mem::MaybeUninit;
 
-#[derive(Clone)]
 struct Foo;
 
 #[allow(deprecated)]
 pub fn main() {
     unsafe {
-        let _x: Foo = mem::uninitialized();
-        let _x: [Foo; 2] = mem::uninitialized();
+        // `Foo` and `[Foo; 2]` are both zero sized and inhabited, so this is safe.
+        let _x: Foo = MaybeUninit::uninit().assume_init();
+        let _x: [Foo; 2] = MaybeUninit::uninit().assume_init();
+        let _x: Foo = std::mem::uninitialized();
+        let _x: [Foo; 2] = std::mem::uninitialized();
     }
 }