Migrate core to Rust 2024

Author: ehuss

library/core/Cargo.toml

@@ -9,7 +9,7 @@ autobenches = false
 # If you update this, be sure to update it in a bunch of other places too!
 # As of 2024, it was src/tools/opt-dist, the core-no-fp-fmt-parse test and
 # the version of the prelude imported in core/lib.rs.
-edition = "2021"
+edition = "2024"
 
 [lib]
 test = false

library/core/src/lib.rs

@@ -226,7 +226,7 @@ extern crate self as core;
 
 #[prelude_import]
 #[allow(unused)]
-use prelude::rust_2021::*;
+use prelude::rust_2024::*;
 
 #[cfg(not(test))] // See #65860
 #[macro_use]

tests/mir-opt/gvn_clone.{impl#0}-clone.GVN.diff

@@ -55,16 +55,16 @@
       bb3: {
           StorageDead(_9);
 -         _0 = AllCopy { a: move _2, b: move _5, c: move _8 };
+-         StorageDead(_10);
 +         _0 = copy (*_1);
++         nop;
           StorageDead(_8);
-          StorageDead(_5);
-          StorageDead(_2);
--         StorageDead(_10);
 -         StorageDead(_7);
--         StorageDead(_4);
-+         nop;
 +         nop;
+          StorageDead(_5);
+-         StorageDead(_4);
 +         nop;
+          StorageDead(_2);
           return;
       }
   }

tests/mir-opt/instsimplify/combine_clone_of_primitives.{impl#0}-clone.InstSimplify-after-simplifycfg.panic-abort.diff

@@ -53,12 +53,12 @@
       bb3: {
           StorageDead(_9);
           _0 = MyThing::<T> { v: move _2, i: move _5, a: move _8 };
-          StorageDead(_8);
-          StorageDead(_5);
-          StorageDead(_2);
           StorageDead(_10);
+          StorageDead(_8);
           StorageDead(_7);
+          StorageDead(_5);
           StorageDead(_4);
+          StorageDead(_2);
           return;
       }
   }

tests/mir-opt/instsimplify/combine_clone_of_primitives.{impl#0}-clone.InstSimplify-after-simplifycfg.panic-unwind.diff

@@ -53,12 +53,12 @@
       bb3: {
           StorageDead(_9);
           _0 = MyThing::<T> { v: move _2, i: move _5, a: move _8 };
-          StorageDead(_8);
-          StorageDead(_5);
-          StorageDead(_2);
           StorageDead(_10);
+          StorageDead(_8);
           StorageDead(_7);
+          StorageDead(_5);
           StorageDead(_4);
+          StorageDead(_2);
           return;
       }
 

tests/run-make/core-no-fp-fmt-parse/rmake.rs

@@ -5,7 +5,7 @@ use run_make_support::{rustc, source_root};
 
 fn main() {
     rustc()
-        .edition("2021")
+        .edition("2024")
         .arg("-Dwarnings")
         .crate_type("rlib")
         .input(source_root().join("library/core/src/lib.rs"))

tests/ui/macros/std-2024-macros.rs

@@ -3,11 +3,8 @@
 
 fn main() {
     assert_eq!(0, const { 0 });
-    //~^ ERROR: no rules expected keyword `const`
     assert_eq!(const { 0 }, const { 0 });
-    //~^ ERROR: no rules expected keyword `const`
     assert_eq!(const { 0 }, 0);
-    //~^ ERROR: no rules expected keyword `const`
 
     let _: Vec<Vec<String>> = vec![const { vec![] }];
     //~^ ERROR: no rules expected keyword `const`

tests/ui/macros/std-2024-macros.stderr

@@ -1,45 +1,18 @@
 error: no rules expected keyword `const`
-  --> $DIR/std-2024-macros.rs:5:19
-   |
-LL |     assert_eq!(0, const { 0 });
-   |                   ^^^^^ no rules expected this token in macro call
-   |
-note: while trying to match meta-variable `$right:expr`
-  --> $SRC_DIR/core/src/macros/mod.rs:LL:COL
-
-error: no rules expected keyword `const`
-  --> $DIR/std-2024-macros.rs:7:16
-   |
-LL |     assert_eq!(const { 0 }, const { 0 });
-   |                ^^^^^ no rules expected this token in macro call
-   |
-note: while trying to match meta-variable `$left:expr`
-  --> $SRC_DIR/core/src/macros/mod.rs:LL:COL
-
-error: no rules expected keyword `const`
-  --> $DIR/std-2024-macros.rs:9:16
-   |
-LL |     assert_eq!(const { 0 }, 0);
-   |                ^^^^^ no rules expected this token in macro call
-   |
-note: while trying to match meta-variable `$left:expr`
-  --> $SRC_DIR/core/src/macros/mod.rs:LL:COL
-
-error: no rules expected keyword `const`
-  --> $DIR/std-2024-macros.rs:12:36
+  --> $DIR/std-2024-macros.rs:9:36
    |
 LL |     let _: Vec<Vec<String>> = vec![const { vec![] }];
    |                                    ^^^^^ no rules expected this token in macro call
    |
    = note: while trying to match end of macro
 
 error: no rules expected keyword `const`
-  --> $DIR/std-2024-macros.rs:14:36
+  --> $DIR/std-2024-macros.rs:11:36
    |
 LL |     let _: Vec<Vec<String>> = vec![const { vec![] }; 10];
    |                                    ^^^^^ no rules expected this token in macro call
    |
    = note: while trying to match end of macro
 
-error: aborting due to 5 previous errors
+error: aborting due to 2 previous errors