Merge from rustc

6 files changed, 34 insertions, 33 deletions

diff --git a/src/tools/clippy/clippy_lints/src/non_copy_const.rs b/src/tools/clippy/clippy_lints/src/non_copy_const.rs
index 405bbfc9c6f..f965ab90da2 100644
--- a/src/tools/clippy/clippy_lints/src/non_copy_const.rs
+++ b/src/tools/clippy/clippy_lints/src/non_copy_const.rs
@@ -179,8 +179,8 @@ impl<'tcx> NonCopyConst<'tcx> {
     }
 
     fn is_value_unfrozen_raw_inner(cx: &LateContext<'tcx>, val: ty::ValTree<'tcx>, ty: Ty<'tcx>) -> bool {
-        // No branch that we check (yet) should continue if val isn't a ValTree::Branch
-        let ty::ValTree::Branch(val) = val else { return false };
+        // No branch that we check (yet) should continue if val isn't a branch
+        let Some(val) = val.try_to_branch() else { return false };
         match *ty.kind() {
             // the fact that we have to dig into every structs to search enums
             // leads us to the point checking `UnsafeCell` directly is the only option.
@@ -192,9 +192,10 @@ impl<'tcx> NonCopyConst<'tcx> {
                 .iter()
                 .any(|field| Self::is_value_unfrozen_raw_inner(cx, *field, ty)),
             ty::Adt(def, args) if def.is_enum() => {
-                let Some((&ty::ValTree::Leaf(variant_index), fields)) = val.split_first() else {
+                let Some((&variant_valtree, fields)) = val.split_first() else {
                     return false;
                 };
+                let variant_index = variant_valtree.unwrap_leaf();
                 let variant_index = VariantIdx::from_u32(variant_index.to_u32());
                 fields
                     .iter()
diff --git a/src/tools/clippy/tests/ui/implicit_return.stderr b/src/tools/clippy/tests/ui/implicit_return.stderr
index 0d2faa5e067..7ea72307450 100644
--- a/src/tools/clippy/tests/ui/implicit_return.stderr
+++ b/src/tools/clippy/tests/ui/implicit_return.stderr
@@ -8,8 +8,7 @@ LL |     true
    = help: to override `-D warnings` add `#[allow(clippy::implicit_return)]`
 help: add `return` as shown
    |
-LL -     true
-LL +     return true
+LL |     return true
    |
 
 error: missing `return` statement
@@ -20,9 +19,8 @@ LL |     if true { true } else { false }
    |
 help: add `return` as shown
    |
-LL -     if true { true } else { false }
-LL +     if true { return true } else { false }
-   |
+LL |     if true { return true } else { false }
+   |               ++++++
 
 error: missing `return` statement
   --> tests/ui/implicit_return.rs:19:29
@@ -32,9 +30,8 @@ LL |     if true { true } else { false }
    |
 help: add `return` as shown
    |
-LL -     if true { true } else { false }
-LL +     if true { true } else { return false }
-   |
+LL |     if true { true } else { return false }
+   |                             ++++++
 
 error: missing `return` statement
   --> tests/ui/implicit_return.rs:25:17
@@ -44,9 +41,8 @@ LL |         true => false,
    |
 help: add `return` as shown
    |
-LL -         true => false,
-LL +         true => return false,
-   |
+LL |         true => return false,
+   |                 ++++++
 
 error: missing `return` statement
   --> tests/ui/implicit_return.rs:26:20
@@ -56,9 +52,8 @@ LL |         false => { true },
    |
 help: add `return` as shown
    |
-LL -         false => { true },
-LL +         false => { return true },
-   |
+LL |         false => { return true },
+   |                    ++++++
 
 error: missing `return` statement
   --> tests/ui/implicit_return.rs:39:9
@@ -104,9 +99,8 @@ LL |     let _ = || { true };
    |
 help: add `return` as shown
    |
-LL -     let _ = || { true };
-LL +     let _ = || { return true };
-   |
+LL |     let _ = || { return true };
+   |                  ++++++
 
 error: missing `return` statement
   --> tests/ui/implicit_return.rs:73:16
@@ -116,9 +110,8 @@ LL |     let _ = || true;
    |
 help: add `return` as shown
    |
-LL -     let _ = || true;
-LL +     let _ = || return true;
-   |
+LL |     let _ = || return true;
+   |                ++++++
 
 error: missing `return` statement
   --> tests/ui/implicit_return.rs:81:5
@@ -128,8 +121,7 @@ LL |     format!("test {}", "test")
    |
 help: add `return` as shown
    |
-LL -     format!("test {}", "test")
-LL +     return format!("test {}", "test")
+LL |     return format!("test {}", "test")
    |
 
 error: missing `return` statement
@@ -140,8 +132,7 @@ LL |     m!(true, false)
    |
 help: add `return` as shown
    |
-LL -     m!(true, false)
-LL +     return m!(true, false)
+LL |     return m!(true, false)
    |
 
 error: missing `return` statement
@@ -191,8 +182,7 @@ LL |     true
    |
 help: add `return` as shown
    |
-LL -     true
-LL +     return true
+LL |     return true
    |
 
 error: aborting due to 16 previous errors
diff --git a/src/tools/clippy/tests/ui/legacy_numeric_constants.stderr b/src/tools/clippy/tests/ui/legacy_numeric_constants.stderr
index 74fe09e0f5c..91dfe79d55b 100644
--- a/src/tools/clippy/tests/ui/legacy_numeric_constants.stderr
+++ b/src/tools/clippy/tests/ui/legacy_numeric_constants.stderr
@@ -68,9 +68,8 @@ LL |     MAX;
    |
 help: use the associated constant instead
    |
-LL -     MAX;
-LL +     u32::MAX;
-   |
+LL |     u32::MAX;
+   |     +++++
 
 error: usage of a legacy numeric method
   --> tests/ui/legacy_numeric_constants.rs:49:10
diff --git a/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-pause-without-sse2.stderr b/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-pause-without-sse2.stderr
new file mode 100644
index 00000000000..171bf0c82d5
--- /dev/null
+++ b/src/tools/miri/tests/pass/shims/x86/intrinsics-x86-pause-without-sse2.stderr
@@ -0,0 +1,5 @@
+warning: target feature `sse2` must be enabled to ensure that the ABI of the current target can be implemented correctly
+   |
+   = note: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #116344 <https://github.com/rust-lang/rust/issues/116344>
+
diff --git a/src/tools/run-make-support/src/external_deps/rustc.rs b/src/tools/run-make-support/src/external_deps/rustc.rs
index 33dc57cbc07..fd4a20278ad 100644
--- a/src/tools/run-make-support/src/external_deps/rustc.rs
+++ b/src/tools/run-make-support/src/external_deps/rustc.rs
@@ -84,7 +84,7 @@ impl Rustc {
         self
     }
 
-    /// Specify default optimization level `-O` (alias for `-C opt-level=2`).
+    /// Specify default optimization level `-O` (alias for `-C opt-level=3`).
     pub fn opt(&mut self) -> &mut Self {
         self.cmd.arg("-O");
         self
diff --git a/src/tools/tidy/src/deps.rs b/src/tools/tidy/src/deps.rs
index 5478ff4a6c6..d75a68d5973 100644
--- a/src/tools/tidy/src/deps.rs
+++ b/src/tools/tidy/src/deps.rs
@@ -476,6 +476,8 @@ const PERMITTED_STDLIB_DEPENDENCIES: &[&str] = &[
     "memchr",
     "miniz_oxide",
     "object",
+    "proc-macro2",
+    "quote",
     "r-efi",
     "r-efi-alloc",
     "rand",
@@ -483,6 +485,8 @@ const PERMITTED_STDLIB_DEPENDENCIES: &[&str] = &[
     "rand_xorshift",
     "rustc-demangle",
     "shlex",
+    "syn",
+    "unicode-ident",
     "unicode-width",
     "unwinding",
     "wasi",
@@ -496,6 +500,8 @@ const PERMITTED_STDLIB_DEPENDENCIES: &[&str] = &[
     "windows_x86_64_gnu",
     "windows_x86_64_gnullvm",
     "windows_x86_64_msvc",
+    "zerocopy",
+    "zerocopy-derive",
     // tidy-alphabetical-end
 ];