Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 0 insertions, 39 deletions

diff --git a/src/test/ui/auto-traits/typeck-auto-trait-no-supertraits.rs b/src/test/ui/auto-traits/typeck-auto-trait-no-supertraits.rs
deleted file mode 100644
index 2a76893fe..000000000
--- a/src/test/ui/auto-traits/typeck-auto-trait-no-supertraits.rs
+++ /dev/null
@@ -1,39 +0,0 @@
-// This test is for #29859, we need to ensure auto traits,
-// (also known previously as default traits), do not have
-// supertraits. Since the compiler synthesizes these
-// instances on demand, we are essentially enabling
-// users to write axioms if we view trait selection,
-// as a proof system.
-//
-// For example the below test allows us to add the rule:
-//  forall (T : Type), T : Copy
-//
-// Providing a copy instance for *any* type, which
-// is most definitely unsound. Imagine copying a
-// type that contains a mutable reference, enabling
-// mutable aliasing.
-//
-// You can imagine an even more dangerous test,
-// which currently compiles on nightly.
-//
-// fn main() {
-//    let mut i = 10;
-//    let (a, b) = copy(&mut i);
-//    println!("{:?} {:?}", a, b);
-// }
-
-#![feature(auto_traits)]
-#![feature(negative_impls)]
-
-auto trait Magic: Copy {} //~ ERROR E0568
-impl<T:Magic> Magic for T {}
-
-fn copy<T: Magic>(x: T) -> (T, T) { (x, x) }
-
-#[derive(Debug)]
-struct NoClone;
-
-fn main() {
-    let (a, b) = copy(NoClone);
-    println!("{:?} {:?}", a, b);
-}