Remove support for dyn*

6 files changed, 0 insertions, 128 deletions

diff --git a/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs b/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs
index 8f1ebb8ada6..942c71ac33b 100644
--- a/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs
+++ b/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs
@@ -175,10 +175,6 @@ fn check_rvalue<'tcx>(
         Rvalue::Cast(CastKind::PointerExposeProvenance, _, _) => {
             Err((span, "casting pointers to ints is unstable in const fn".into()))
         },
-        Rvalue::Cast(CastKind::PointerCoercion(PointerCoercion::DynStar, _), _, _) => {
-            // FIXME(dyn-star)
-            unimplemented!()
-        },
         Rvalue::Cast(CastKind::Transmute, _, _) => Err((
             span,
             "transmute can attempt to turn pointers into integers, so is unstable in const fn".into(),
diff --git a/src/tools/miri/src/helpers.rs b/src/tools/miri/src/helpers.rs
index ce4668c36c0..908f39af299 100644
--- a/src/tools/miri/src/helpers.rs
+++ b/src/tools/miri/src/helpers.rs
@@ -595,10 +595,6 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
                 } else if matches!(v.layout.fields, FieldsShape::Union(..)) {
                     // A (non-frozen) union. We fall back to whatever the type says.
                     (self.unsafe_cell_action)(v)
-                } else if matches!(v.layout.ty.kind(), ty::Dynamic(_, _, ty::DynStar)) {
-                    // This needs to read the vtable pointer to proceed type-driven, but we don't
-                    // want to reentrantly read from memory here.
-                    (self.unsafe_cell_action)(v)
                 } else {
                     // We want to not actually read from memory for this visit. So, before
                     // walking this value, we have to make sure it is not a
diff --git a/src/tools/miri/tests/pass/dyn-star.rs b/src/tools/miri/tests/pass/dyn-star.rs
deleted file mode 100644
index 1ce0dd3c9d5..00000000000
--- a/src/tools/miri/tests/pass/dyn-star.rs
+++ /dev/null
@@ -1,103 +0,0 @@
-#![feature(dyn_star)]
-#![allow(incomplete_features)]
-#![feature(custom_inner_attributes)]
-// rustfmt destroys `dyn* Trait` syntax
-#![rustfmt::skip]
-
-use std::fmt::{Debug, Display};
-
-fn main() {
-    make_dyn_star();
-    method();
-    box_();
-    dispatch_on_pin_mut();
-    dyn_star_to_dyn();
-    dyn_to_dyn_star();
-}
-
-fn dyn_star_to_dyn() {
-    let x: dyn* Debug = &42;
-    let x = Box::new(x) as Box<dyn Debug>;
-    assert_eq!("42", format!("{x:?}"));
-}
-
-fn dyn_to_dyn_star() {
-    let x: Box<dyn Debug> = Box::new(42);
-    let x = &x as dyn* Debug;
-    assert_eq!("42", format!("{x:?}"));
-}
-
-fn make_dyn_star() {
-    fn make_dyn_star_coercion(i: usize) {
-        let _dyn_i: dyn* Debug = i;
-    }
-
-    fn make_dyn_star_explicit(i: usize) {
-        let _dyn_i: dyn* Debug = i as dyn* Debug;
-    }
-
-    make_dyn_star_coercion(42);
-    make_dyn_star_explicit(42);
-}
-
-fn method() {
-    trait Foo {
-        fn get(&self) -> usize;
-    }
-    
-    impl Foo for usize {
-        fn get(&self) -> usize {
-            *self
-        }
-    }
-    
-    fn invoke_dyn_star(i: dyn* Foo) -> usize {
-        i.get()
-    }
-    
-    fn make_and_invoke_dyn_star(i: usize) -> usize {
-        let dyn_i: dyn* Foo = i;
-        invoke_dyn_star(dyn_i)
-    }
-    
-    assert_eq!(make_and_invoke_dyn_star(42), 42);
-}
-
-fn box_() {
-    fn make_dyn_star() -> dyn* Display {
-        Box::new(42) as dyn* Display
-    }
-    
-    let x = make_dyn_star();
-    assert_eq!(format!("{x}"), "42");
-}
-
-fn dispatch_on_pin_mut() {
-    use std::future::Future;
-
-    async fn foo(f: dyn* Future<Output = i32>) {
-        println!("dispatch_on_pin_mut: value: {}", f.await);
-    }
-
-    async fn async_main() {
-        foo(Box::pin(async { 1 })).await
-    }
-
-    // ------------------------------------------------------------------------- //
-    // Implementation Details Below...
-
-    use std::pin::Pin;
-    use std::task::*;
-
-    let mut fut = async_main();
-
-    // Poll loop, just to test the future...
-    let ctx = &mut Context::from_waker(Waker::noop());
-
-    loop {
-        match unsafe { Pin::new_unchecked(&mut fut).poll(ctx) } {
-            Poll::Pending => {}
-            Poll::Ready(()) => break,
-        }
-    }
-}
diff --git a/src/tools/rustfmt/src/types.rs b/src/tools/rustfmt/src/types.rs
index 7ec1032dcb4..dd1515805e5 100644
--- a/src/tools/rustfmt/src/types.rs
+++ b/src/tools/rustfmt/src/types.rs
@@ -835,12 +835,6 @@ impl Rewrite for ast::Ty {
                             .max_width_error(shape.width, self.span())?;
                         (shape, "dyn ")
                     }
-                    ast::TraitObjectSyntax::DynStar => {
-                        let shape = shape
-                            .offset_left(5)
-                            .max_width_error(shape.width, self.span())?;
-                        (shape, "dyn* ")
-                    }
                     ast::TraitObjectSyntax::None => (shape, ""),
                 };
                 let mut res = bounds.rewrite_result(context, shape)?;
diff --git a/src/tools/rustfmt/tests/target/issue_5542.rs b/src/tools/rustfmt/tests/target/issue_5542.rs
deleted file mode 100644
index 730bb7b681a..00000000000
--- a/src/tools/rustfmt/tests/target/issue_5542.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-#![feature(dyn_star)]
-#![allow(incomplete_features)]
-
-use core::fmt::Debug;
-
-fn main() {
-    let i = 42;
-    let dyn_i = i as dyn* Debug;
-    dbg!(dyn_i);
-}
diff --git a/src/tools/tidy/src/issues.txt b/src/tools/tidy/src/issues.txt
index 18da874dbef..49b4287e4e3 100644
--- a/src/tools/tidy/src/issues.txt
+++ b/src/tools/tidy/src/issues.txt
@@ -930,7 +930,6 @@ ui/dst/issue-90528-unsizing-suggestion-3.rs
 ui/dst/issue-90528-unsizing-suggestion-4.rs
 ui/dyn-keyword/issue-5153.rs
 ui/dyn-keyword/issue-56327-dyn-trait-in-macro-is-okay.rs
-ui/dyn-star/issue-102430.rs
 ui/empty/issue-37026.rs
 ui/entry-point/issue-118772.rs
 ui/enum-discriminant/auxiliary/issue-41394.rs