Auto merge of rust-lang#86833 - crlf0710:remove-std-raw-mod, r=SimonSapin

Remove the deprecated `core::raw` and `std::raw` module.

A few months has passed since rust-lang#84207. I think now it's time for the final removal.

Closes rust-lang#27751.

r? `@m-ou-se`

Author: bors

library/core/src/lib.rs

@@ -255,7 +255,6 @@ pub mod option;
 pub mod panic;
 pub mod panicking;
 pub mod pin;
-pub mod raw;
 pub mod result;
 #[unstable(feature = "async_stream", issue = "79024")]
 pub mod stream;

library/core/src/raw.rs

@@ -29,7 +29,6 @@
 #![feature(try_find)]
 #![feature(is_sorted)]
 #![feature(pattern)]
-#![feature(raw)]
 #![feature(sort_internals)]
 #![feature(slice_partition_at_index)]
 #![feature(maybe_uninit_uninit_array)]

library/core/tests/lib.rs

@@ -97,28 +97,6 @@ fn test_transmute_copy() {
     assert_eq!(1, unsafe { transmute_copy(&1) });
 }
 
-// Remove this test when `std::raw` is removed.
-// The replacement pointer metadata APIs are tested in library/core/tests/ptr.rs
-#[allow(deprecated)]
-#[test]
-fn test_transmute() {
-    trait Foo {
-        fn dummy(&self) {}
-    }
-    impl Foo for isize {}
-
-    let a = box 100isize as Box<dyn Foo>;
-    unsafe {
-        let x: ::core::raw::TraitObject = transmute(a);
-        assert!(*(x.data as *const isize) == 100);
-        let _x: Box<dyn Foo> = transmute(x);
-    }
-
-    unsafe {
-        assert_eq!(transmute::<_, Vec<u8>>("L".to_string()), [76]);
-    }
-}
-
 #[test]
 #[allow(dead_code)]
 fn test_discriminant_send_sync() {

library/core/tests/mem.rs

@@ -23,7 +23,6 @@
 #![feature(unwind_attributes)]
 #![feature(abi_thiscall)]
 #![feature(rustc_attrs)]
-#![feature(raw)]
 #![panic_runtime]
 #![feature(panic_runtime)]
 // `real_imp` is unused with Miri, so silence warnings.

library/panic_unwind/src/lib.rs

@@ -303,7 +303,6 @@
 #![feature(pin_static_ref)]
 #![feature(prelude_import)]
 #![feature(ptr_internals)]
-#![feature(raw)]
 #![feature(ready_macro)]
 #![feature(rustc_attrs)]
 #![feature(rustc_private)]
@@ -455,9 +454,6 @@ pub use core::pin;
 #[stable(feature = "rust1", since = "1.0.0")]
 pub use core::ptr;
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow(deprecated, deprecated_in_future)]
-pub use core::raw;
-#[stable(feature = "rust1", since = "1.0.0")]
 pub use core::result;
 #[unstable(feature = "async_stream", issue = "79024")]
 pub use core::stream;

library/std/src/lib.rs

@@ -1,12 +1,6 @@
 // run-pass
 
-// Remove this file when `std::raw` is removed.
-// The replacement pointer metadata APIs are tested in library/core/tests/ptr.rs
-#![allow(deprecated)]
-#![feature(raw)]
-
-use std::mem;
-use std::raw;
+#![feature(ptr_metadata)]
 
 trait Foo {
     fn foo(&self) {}
@@ -31,13 +25,10 @@ fn main() {
 
     // And conversion to a void pointer/address for trait objects too.
     let a: *mut dyn Foo = &mut Bar;
-    let b = a as *mut ();
+    let b = a as *mut () as usize;
     let c = a as *const () as usize;
-    let d = unsafe {
-        let r: raw::TraitObject = mem::transmute(a);
-        r.data
-    };
+    let d = a.to_raw_parts().0 as usize;
 
     assert_eq!(b, d);
-    assert_eq!(c, d as usize);
+    assert_eq!(c, d);
 }

src/test/ui/cast/fat-ptr-cast-rpass.rs

@@ -1,12 +1,11 @@
 // run-pass
 // Test structs with always-unsized fields.
 
-
 #![allow(warnings)]
-#![feature(box_syntax, unsize, raw)]
+#![feature(box_syntax, unsize, ptr_metadata)]
 
 use std::mem;
-use std::raw;
+use std::ptr;
 use std::slice;
 
 struct Foo<T> {
@@ -28,7 +27,7 @@ trait Tr {
 }
 
 struct St {
-    f: usize
+    f: usize,
 }
 
 impl Tr for St {
@@ -38,7 +37,7 @@ impl Tr for St {
 }
 
 struct Qux<'a> {
-    f: Tr+'a
+    f: Tr + 'a,
 }
 
 pub fn main() {
@@ -56,10 +55,10 @@ pub fn main() {
 
     unsafe {
         struct Foo_<T> {
-            f: [T; 3]
+            f: [T; 3],
         }
 
-        let data: Box<Foo_<i32>> = box Foo_{f: [1, 2, 3] };
+        let data: Box<Foo_<i32>> = box Foo_ { f: [1, 2, 3] };
         let x: &Foo<i32> = mem::transmute(slice::from_raw_parts(&*data, 3));
         assert_eq!(x.f.len(), 3);
         assert_eq!(x.f[0], 1);
@@ -69,8 +68,8 @@ pub fn main() {
             f2: [u8; 5],
         }
 
-        let data: Box<_> = box Baz_ {
-            f1: 42, f2: ['a' as u8, 'b' as u8, 'c' as u8, 'd' as u8, 'e' as u8] };
+        let data: Box<_> =
+            box Baz_ { f1: 42, f2: ['a' as u8, 'b' as u8, 'c' as u8, 'd' as u8, 'e' as u8] };
         let x: &Baz = mem::transmute(slice::from_raw_parts(&*data, 5));
         assert_eq!(x.f1, 42);
         let chs: Vec<char> = x.f2.chars().collect();
@@ -82,15 +81,13 @@ pub fn main() {
         assert_eq!(chs[4], 'e');
 
         struct Qux_ {
-            f: St
+            f: St,
         }
 
         let obj: Box<St> = box St { f: 42 };
         let obj: &Tr = &*obj;
-        let obj: raw::TraitObject = mem::transmute(&*obj);
-        let data: Box<_> = box Qux_{ f: St { f: 234 } };
-        let x: &Qux = mem::transmute(raw::TraitObject { vtable: obj.vtable,
-                                                        data: mem::transmute(&*data) });
+        let data: Box<_> = box Qux_ { f: St { f: 234 } };
+        let x: &Qux = &*ptr::from_raw_parts::<Qux>((&*data as *const _).cast(), ptr::metadata(obj));
         assert_eq!(x.f.foo(), 234);
     }
 }