diff --git a/tests/ui/cast/ptr-to-trait-obj-add-auto.rs b/tests/ui/cast/ptr-to-trait-obj-add-auto.rs
index 4758132b65d..27c6ffb61cc 100644
--- a/tests/ui/cast/ptr-to-trait-obj-add-auto.rs
+++ b/tests/ui/cast/ptr-to-trait-obj-add-auto.rs
@@ -1,4 +1,4 @@
-// check-fail
+//@ check-fail
 
 trait Trait<'a> {}
 
diff --git a/tests/ui/cast/ptr-to-trait-obj-different-args.rs b/tests/ui/cast/ptr-to-trait-obj-different-args.rs
index 7488cf5ee97..41b6633d68a 100644
--- a/tests/ui/cast/ptr-to-trait-obj-different-args.rs
+++ b/tests/ui/cast/ptr-to-trait-obj-different-args.rs
@@ -1,8 +1,7 @@
-// check-fail
+//@ check-fail
 //
 // issue: <https://github.com/rust-lang/rust/issues/120222>
 
-
 trait A {}
 impl<T> A for T {}
 trait B {}
diff --git a/tests/ui/cast/ptr-to-trait-obj-different-args.stderr b/tests/ui/cast/ptr-to-trait-obj-different-args.stderr
index e2cd9c8fa90..74a95d85d4e 100644
--- a/tests/ui/cast/ptr-to-trait-obj-different-args.stderr
+++ b/tests/ui/cast/ptr-to-trait-obj-different-args.stderr
@@ -1,5 +1,5 @@
 error[E0277]: the trait bound `dyn A: Unsize<dyn B>` is not satisfied
-  --> $DIR/ptr-to-trait-obj-different-args.rs:19:27
+  --> $DIR/ptr-to-trait-obj-different-args.rs:18:27
    |
 LL |     let b: *const dyn B = a as _;
    |                           ^^^^^^ the trait `Unsize<dyn B>` is not implemented for `dyn A`
@@ -7,7 +7,7 @@ LL |     let b: *const dyn B = a as _;
    = note: all implementations of `Unsize` are provided automatically by the compiler, see <https://doc.rust-lang.org/stable/std/marker/trait.Unsize.html> for more information
 
 error[E0277]: the trait bound `dyn Trait<X>: Unsize<dyn Trait<Y>>` is not satisfied
-  --> $DIR/ptr-to-trait-obj-different-args.rs:22:34
+  --> $DIR/ptr-to-trait-obj-different-args.rs:21:34
    |
 LL |     let y: *const dyn Trait<Y> = x as _;
    |                                  ^^^^^^ the trait `Unsize<dyn Trait<Y>>` is not implemented for `dyn Trait<X>`
@@ -15,7 +15,7 @@ LL |     let y: *const dyn Trait<Y> = x as _;
    = note: all implementations of `Unsize` are provided automatically by the compiler, see <https://doc.rust-lang.org/stable/std/marker/trait.Unsize.html> for more information
 
 error[E0277]: the trait bound `dyn Trait<X>: Unsize<dyn Trait<T>>` is not satisfied
-  --> $DIR/ptr-to-trait-obj-different-args.rs:28:34
+  --> $DIR/ptr-to-trait-obj-different-args.rs:27:34
    |
 LL |     let _: *const dyn Trait<T> = x as _;
    |                                  ^^^^^^ the trait `Unsize<dyn Trait<T>>` is not implemented for `dyn Trait<X>`
@@ -27,7 +27,7 @@ LL | fn generic<T>(x: *const dyn Trait<X>, t: *const dyn Trait<T>) where dyn Tra
    |                                                               ++++++++++++++++++++++++++++++++++++++++
 
 error[E0277]: the trait bound `dyn Trait<T>: Unsize<dyn Trait<X>>` is not satisfied
-  --> $DIR/ptr-to-trait-obj-different-args.rs:29:34
+  --> $DIR/ptr-to-trait-obj-different-args.rs:28:34
    |
 LL |     let _: *const dyn Trait<X> = t as _;
    |                                  ^^^^^^ the trait `Unsize<dyn Trait<X>>` is not implemented for `dyn Trait<T>`
@@ -39,7 +39,7 @@ LL | fn generic<T>(x: *const dyn Trait<X>, t: *const dyn Trait<T>) where dyn Tra
    |                                                               ++++++++++++++++++++++++++++++++++++++++
 
 error[E0277]: the trait bound `dyn Assocked<Assoc = u8>: Unsize<dyn Assocked<Assoc = u32>>` is not satisfied
-  --> $DIR/ptr-to-trait-obj-different-args.rs:37:5
+  --> $DIR/ptr-to-trait-obj-different-args.rs:36:5
    |
 LL |     x as _
    |     ^^^^^^ the trait `Unsize<dyn Assocked<Assoc = u32>>` is not implemented for `dyn Assocked<Assoc = u8>`
diff --git a/tests/ui/cast/ptr-to-trait-obj-different-regions-lt-ext.rs b/tests/ui/cast/ptr-to-trait-obj-different-regions-lt-ext.rs
index d994723981f..96345de01c9 100644
--- a/tests/ui/cast/ptr-to-trait-obj-different-regions-lt-ext.rs
+++ b/tests/ui/cast/ptr-to-trait-obj-different-regions-lt-ext.rs
@@ -1,4 +1,4 @@
-// check-fail
+//@ check-fail
 //
 // issue: <https://github.com/rust-lang/rust/issues/120217>
 
diff --git a/tests/ui/cast/ptr-to-trait-obj-different-regions-misc.rs b/tests/ui/cast/ptr-to-trait-obj-different-regions-misc.rs
index ea17fcd0da5..01c347bfae5 100644
--- a/tests/ui/cast/ptr-to-trait-obj-different-regions-misc.rs
+++ b/tests/ui/cast/ptr-to-trait-obj-different-regions-misc.rs
@@ -1,4 +1,4 @@
-// check-fail
+//@ check-fail
 
 trait Trait<'a> {}
 
diff --git a/tests/ui/cast/ptr-to-trait-obj-ok.rs b/tests/ui/cast/ptr-to-trait-obj-ok.rs
index 84d11bcb8eb..656c99c58dc 100644
--- a/tests/ui/cast/ptr-to-trait-obj-ok.rs
+++ b/tests/ui/cast/ptr-to-trait-obj-ok.rs
@@ -1,4 +1,4 @@
-// check-pass
+//@ check-pass
 
 trait Trait<'a> {}
 
diff --git a/tests/ui/traits/upcast_soundness_bug.rs b/tests/ui/traits/upcast_soundness_bug.rs
index 3229a74f3ce..dd59f8cee50 100644
--- a/tests/ui/traits/upcast_soundness_bug.rs
+++ b/tests/ui/traits/upcast_soundness_bug.rs
@@ -1,5 +1,5 @@
 #![feature(trait_upcasting)]
-// check-fail
+//@ check-fail
 //
 // issue: <https://github.com/rust-lang/rust/pull/120222>
 //! This would segfault at runtime.