1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/errors/issue-99572-impl-trait-on-pointer.rs b/tests/ui/errors/issue-99572-impl-trait-on-pointer.rs
new file mode 100644
index 000000000..272c6bd3f
--- /dev/null
+++ b/tests/ui/errors/issue-99572-impl-trait-on-pointer.rs
@@ -0,0 +1,25 @@
+// Emit additional suggestion to correct the trait implementation
+// on a pointer
+use std::{fmt, marker};
+
+struct LocalType;
+
+impl fmt::Display for *mut LocalType {
+//~^ ERROR only traits defined in the current crate can be implemented for arbitrary types
+//~| NOTE impl doesn't use only types from inside the current crate
+//~| NOTE `*mut LocalType` is not defined in the current crate because raw pointers are always foreign
+//~| NOTE define and implement a trait or new type instead
+//~| HELP consider introducing a new wrapper type
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "This not compile")
+    }
+}
+
+impl<T> marker::Copy for *mut T {
+//~^ ERROR only traits defined in the current crate can be implemented for arbitrary types
+//~| NOTE impl doesn't use only types from inside the current crate
+//~| NOTE `*mut T` is not defined in the current crate because raw pointers are always foreign
+//~| NOTE define and implement a trait or new type instead
+}
+
+fn main() {}