Auto merge of rust-lang#126273 - pietroalbini:pa-bootstrap-update, r=…

…Mark-Simulacrum

Bump stage0 to 1.80.0

r? `@Mark-Simulacrum`

alloc/src/boxed.rs

@@ -145,8 +145,7 @@
 //! to `into_iter()` for boxed slices will defer to the slice implementation on editions before
 //! 2024:
 //!
-#![cfg_attr(bootstrap, doc = "```rust,edition2021,ignore")]
-#![cfg_attr(not(bootstrap), doc = "```rust,edition2021")]
+//! ```rust,edition2021
 //! // Rust 2015, 2018, and 2021:
 //!
 //! # #![allow(boxed_slice_into_iter)] // override our `deny(warnings)`
@@ -2123,23 +2122,23 @@ impl<I> FromIterator<I> for Box<[I]> {
 
 /// This implementation is required to make sure that the `Box<[I]>: IntoIterator`
 /// implementation doesn't overlap with `IntoIterator for T where T: Iterator` blanket.
-#[stable(feature = "boxed_slice_into_iter", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "boxed_slice_into_iter", since = "1.80.0")]
 impl<I, A: Allocator> !Iterator for Box<[I], A> {}
 
 /// This implementation is required to make sure that the `&Box<[I]>: IntoIterator`
 /// implementation doesn't overlap with `IntoIterator for T where T: Iterator` blanket.
-#[stable(feature = "boxed_slice_into_iter", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "boxed_slice_into_iter", since = "1.80.0")]
 impl<'a, I, A: Allocator> !Iterator for &'a Box<[I], A> {}
 
 /// This implementation is required to make sure that the `&mut Box<[I]>: IntoIterator`
 /// implementation doesn't overlap with `IntoIterator for T where T: Iterator` blanket.
-#[stable(feature = "boxed_slice_into_iter", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "boxed_slice_into_iter", since = "1.80.0")]
 impl<'a, I, A: Allocator> !Iterator for &'a mut Box<[I], A> {}
 
 // Note: the `#[rustc_skip_during_method_dispatch(boxed_slice)]` on `trait IntoIterator`
 // hides this implementation from explicit `.into_iter()` calls on editions < 2024,
 // so those calls will still resolve to the slice implementation, by reference.
-#[stable(feature = "boxed_slice_into_iter", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "boxed_slice_into_iter", since = "1.80.0")]
 impl<I, A: Allocator> IntoIterator for Box<[I], A> {
     type IntoIter = vec::IntoIter<I, A>;
     type Item = I;
@@ -2148,7 +2147,7 @@ impl<I, A: Allocator> IntoIterator for Box<[I], A> {
     }
 }
 
-#[stable(feature = "boxed_slice_into_iter", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "boxed_slice_into_iter", since = "1.80.0")]
 impl<'a, I, A: Allocator> IntoIterator for &'a Box<[I], A> {
     type IntoIter = slice::Iter<'a, I>;
     type Item = &'a I;
@@ -2157,7 +2156,7 @@ impl<'a, I, A: Allocator> IntoIterator for &'a Box<[I], A> {
     }
 }
 
-#[stable(feature = "boxed_slice_into_iter", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "boxed_slice_into_iter", since = "1.80.0")]
 impl<'a, I, A: Allocator> IntoIterator for &'a mut Box<[I], A> {
     type IntoIter = slice::IterMut<'a, I>;
     type Item = &'a mut I;
@@ -2167,47 +2166,47 @@ impl<'a, I, A: Allocator> IntoIterator for &'a mut Box<[I], A> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "boxed_str_from_iter", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "boxed_str_from_iter", since = "1.80.0")]
 impl FromIterator<char> for Box<str> {
     fn from_iter<T: IntoIterator<Item = char>>(iter: T) -> Self {
         String::from_iter(iter).into_boxed_str()
     }
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "boxed_str_from_iter", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "boxed_str_from_iter", since = "1.80.0")]
 impl<'a> FromIterator<&'a char> for Box<str> {
     fn from_iter<T: IntoIterator<Item = &'a char>>(iter: T) -> Self {
         String::from_iter(iter).into_boxed_str()
     }
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "boxed_str_from_iter", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "boxed_str_from_iter", since = "1.80.0")]
 impl<'a> FromIterator<&'a str> for Box<str> {
     fn from_iter<T: IntoIterator<Item = &'a str>>(iter: T) -> Self {
         String::from_iter(iter).into_boxed_str()
     }
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "boxed_str_from_iter", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "boxed_str_from_iter", since = "1.80.0")]
 impl FromIterator<String> for Box<str> {
     fn from_iter<T: IntoIterator<Item = String>>(iter: T) -> Self {
         String::from_iter(iter).into_boxed_str()
     }
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "boxed_str_from_iter", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "boxed_str_from_iter", since = "1.80.0")]
 impl<A: Allocator> FromIterator<Box<str, A>> for Box<str> {
     fn from_iter<T: IntoIterator<Item = Box<str, A>>>(iter: T) -> Self {
         String::from_iter(iter).into_boxed_str()
     }
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "boxed_str_from_iter", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "boxed_str_from_iter", since = "1.80.0")]
 impl<'a> FromIterator<Cow<'a, str>> for Box<str> {
     fn from_iter<T: IntoIterator<Item = Cow<'a, str>>>(iter: T) -> Self {
         String::from_iter(iter).into_boxed_str()

alloc/src/collections/binary_heap/mod.rs

@@ -440,10 +440,7 @@ impl<T: Ord> BinaryHeap<T> {
     /// heap.push(4);
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(
-        feature = "const_binary_heap_constructor",
-        since = "CURRENT_RUSTC_VERSION"
-    )]
+    #[rustc_const_stable(feature = "const_binary_heap_constructor", since = "1.80.0")]
     #[must_use]
     pub const fn new() -> BinaryHeap<T> {
         BinaryHeap { data: vec![] }
@@ -1224,7 +1221,7 @@ impl<T, A: Allocator> BinaryHeap<T, A> {
     /// io::sink().write(heap.as_slice()).unwrap();
     /// ```
     #[must_use]
-    #[stable(feature = "binary_heap_as_slice", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "binary_heap_as_slice", since = "1.80.0")]
     pub fn as_slice(&self) -> &[T] {
         self.data.as_slice()
     }

alloc/src/ffi/c_str.rs

@@ -911,7 +911,7 @@ impl From<&CStr> for Rc<CStr> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "more_rc_default_impls", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "more_rc_default_impls", since = "1.80.0")]
 impl Default for Rc<CStr> {
     /// Creates an empty CStr inside an Rc
     ///

alloc/src/lib.rs

@@ -165,7 +165,6 @@
 //
 // Language features:
 // tidy-alphabetical-start
-#![cfg_attr(bootstrap, feature(exclusive_range_pattern))]
 #![cfg_attr(not(test), feature(coroutine_trait))]
 #![cfg_attr(test, feature(panic_update_hook))]
 #![cfg_attr(test, feature(test))]

alloc/src/rc.rs

@@ -2250,7 +2250,7 @@ impl<T: Default> Default for Rc<T> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "more_rc_default_impls", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "more_rc_default_impls", since = "1.80.0")]
 impl Default for Rc<str> {
     /// Creates an empty str inside an Rc
     ///
@@ -2262,7 +2262,7 @@ impl Default for Rc<str> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "more_rc_default_impls", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "more_rc_default_impls", since = "1.80.0")]
 impl<T> Default for Rc<[T]> {
     /// Creates an empty `[T]` inside an Rc
     ///

alloc/src/sync.rs

@@ -3405,7 +3405,7 @@ static STATIC_INNER_SLICE: SliceArcInnerForStatic = SliceArcInnerForStatic {
 };
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "more_rc_default_impls", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "more_rc_default_impls", since = "1.80.0")]
 impl Default for Arc<str> {
     /// Creates an empty str inside an Arc
     ///
@@ -3420,7 +3420,7 @@ impl Default for Arc<str> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "more_rc_default_impls", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "more_rc_default_impls", since = "1.80.0")]
 impl Default for Arc<core::ffi::CStr> {
     /// Creates an empty CStr inside an Arc
     ///
@@ -3439,7 +3439,7 @@ impl Default for Arc<core::ffi::CStr> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "more_rc_default_impls", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "more_rc_default_impls", since = "1.80.0")]
 impl<T> Default for Arc<[T]> {
     /// Creates an empty `[T]` inside an Arc
     ///

alloc/src/vec/mod.rs

@@ -2649,7 +2649,7 @@ impl<T, A: Allocator, const N: usize> Vec<[T; N], A> {
     /// let mut flattened = vec.into_flattened();
     /// assert_eq!(flattened.pop(), Some(6));
     /// ```
-    #[stable(feature = "slice_flatten", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "slice_flatten", since = "1.80.0")]
     pub fn into_flattened(self) -> Vec<T, A> {
         let (ptr, len, cap, alloc) = self.into_raw_parts_with_alloc();
         let (new_len, new_cap) = if T::IS_ZST {

core/src/cell.rs

@@ -260,7 +260,7 @@ use crate::ptr::{self, NonNull};
 mod lazy;
 mod once;
 
-#[stable(feature = "lazy_cell", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "lazy_cell", since = "1.80.0")]
 pub use lazy::LazyCell;
 #[stable(feature = "once_cell", since = "1.70.0")]
 pub use once::OnceCell;

core/src/cell/lazy.rs

@@ -34,7 +34,7 @@ enum State<T, F> {
 /// //   92
 /// //   92
 /// ```
-#[stable(feature = "lazy_cell", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "lazy_cell", since = "1.80.0")]
 pub struct LazyCell<T, F = fn() -> T> {
     state: UnsafeCell<State<T, F>>,
 }
@@ -54,8 +54,8 @@ impl<T, F: FnOnce() -> T> LazyCell<T, F> {
     /// assert_eq!(&*lazy, "HELLO, WORLD!");
     /// ```
     #[inline]
-    #[stable(feature = "lazy_cell", since = "CURRENT_RUSTC_VERSION")]
-    #[rustc_const_stable(feature = "lazy_cell", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "lazy_cell", since = "1.80.0")]
+    #[rustc_const_stable(feature = "lazy_cell", since = "1.80.0")]
     pub const fn new(f: F) -> LazyCell<T, F> {
         LazyCell { state: UnsafeCell::new(State::Uninit(f)) }
     }
@@ -103,7 +103,7 @@ impl<T, F: FnOnce() -> T> LazyCell<T, F> {
     /// assert_eq!(&*lazy, &92);
     /// ```
     #[inline]
-    #[stable(feature = "lazy_cell", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "lazy_cell", since = "1.80.0")]
     pub fn force(this: &LazyCell<T, F>) -> &T {
         // SAFETY:
         // This invalidates any mutable references to the data. The resulting
@@ -167,7 +167,7 @@ impl<T, F> LazyCell<T, F> {
     }
 }
 
-#[stable(feature = "lazy_cell", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "lazy_cell", since = "1.80.0")]
 impl<T, F: FnOnce() -> T> Deref for LazyCell<T, F> {
     type Target = T;
     #[inline]
@@ -176,7 +176,7 @@ impl<T, F: FnOnce() -> T> Deref for LazyCell<T, F> {
     }
 }
 
-#[stable(feature = "lazy_cell", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "lazy_cell", since = "1.80.0")]
 impl<T: Default> Default for LazyCell<T> {
     /// Creates a new lazy value using `Default` as the initializing function.
     #[inline]
@@ -185,7 +185,7 @@ impl<T: Default> Default for LazyCell<T> {
     }
 }
 
-#[stable(feature = "lazy_cell", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "lazy_cell", since = "1.80.0")]
 impl<T: fmt::Debug, F> fmt::Debug for LazyCell<T, F> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let mut d = f.debug_tuple("LazyCell");

core/src/future/async_drop.rs

@@ -256,7 +256,6 @@ async unsafe fn either<O: IntoFuture<Output = ()>, M: IntoFuture<Output = ()>, T
     }
 }
 
-#[cfg(not(bootstrap))]
 #[lang = "async_drop_deferred_drop_in_place"]
 async unsafe fn deferred_drop_in_place<T>(to_drop: *mut T) {
     // SAFETY: same safety requirements as with drop_in_place (implied by

core/src/future/future.rs

@@ -35,7 +35,7 @@ use crate::task::{Context, Poll};
 pub trait Future {
     /// The type of value produced on completion.
     #[stable(feature = "futures_api", since = "1.36.0")]
-    #[cfg_attr(not(bootstrap), lang = "future_output")]
+    #[lang = "future_output"]
     type Output;
 
     /// Attempt to resolve the future to a final value, registering

core/src/intrinsics.rs

@@ -986,7 +986,7 @@ pub const unsafe fn assume(b: bool) {
 #[unstable(feature = "core_intrinsics", issue = "none")]
 #[rustc_intrinsic]
 #[rustc_nounwind]
-#[cfg_attr(not(bootstrap), miri::intrinsic_fallback_is_spec)]
+#[miri::intrinsic_fallback_is_spec]
 pub const fn likely(b: bool) -> bool {
     b
 }
@@ -1006,7 +1006,7 @@ pub const fn likely(b: bool) -> bool {
 #[unstable(feature = "core_intrinsics", issue = "none")]
 #[rustc_intrinsic]
 #[rustc_nounwind]
-#[cfg_attr(not(bootstrap), miri::intrinsic_fallback_is_spec)]
+#[miri::intrinsic_fallback_is_spec]
 pub const fn unlikely(b: bool) -> bool {
     b
 }
@@ -2482,7 +2482,7 @@ extern "rust-intrinsic" {
 #[rustc_nounwind]
 #[rustc_do_not_const_check]
 #[inline]
-#[cfg_attr(not(bootstrap), miri::intrinsic_fallback_is_spec)]
+#[miri::intrinsic_fallback_is_spec]
 pub const fn ptr_guaranteed_cmp<T>(ptr: *const T, other: *const T) -> u8 {
     (ptr == other) as u8
 }
@@ -2747,7 +2747,7 @@ pub const fn ub_checks() -> bool {
 #[unstable(feature = "core_intrinsics", issue = "none")]
 #[rustc_nounwind]
 #[rustc_intrinsic]
-#[cfg_attr(not(bootstrap), miri::intrinsic_fallback_is_spec)]
+#[miri::intrinsic_fallback_is_spec]
 pub const unsafe fn const_allocate(_size: usize, _align: usize) -> *mut u8 {
     // const eval overrides this function, but runtime code for now just returns null pointers.
     // See <https://github.com/rust-lang/rust/issues/93935>.
@@ -2768,7 +2768,7 @@ pub const unsafe fn const_allocate(_size: usize, _align: usize) -> *mut u8 {
 #[unstable(feature = "core_intrinsics", issue = "none")]
 #[rustc_nounwind]
 #[rustc_intrinsic]
-#[cfg_attr(not(bootstrap), miri::intrinsic_fallback_is_spec)]
+#[miri::intrinsic_fallback_is_spec]
 pub const unsafe fn const_deallocate(_ptr: *mut u8, _size: usize, _align: usize) {
     // Runtime NOP
 }
@@ -2828,7 +2828,6 @@ impl<P: ?Sized, T: ptr::Thin> AggregateRawPtr<*mut T> for *mut P {
 #[rustc_const_unstable(feature = "ptr_metadata", issue = "81513")]
 #[rustc_intrinsic]
 #[rustc_intrinsic_must_be_overridden]
-#[cfg(not(bootstrap))]
 pub const fn ptr_metadata<P: ptr::Pointee<Metadata = M> + ?Sized, M>(_ptr: *const P) -> M {
     // To implement a fallback we'd have to assume the layout of the pointer,
     // but the whole point of this intrinsic is that we shouldn't do that.

core/src/intrinsics/simd.rs

@@ -573,7 +573,6 @@ extern "rust-intrinsic" {
     ///
     /// `T` must be a vector of integers.
     #[rustc_nounwind]
-    #[cfg(not(bootstrap))]
     pub fn simd_ctpop<T>(x: T) -> T;
 
     /// Count the trailing zeros of each element.

core/src/iter/traits/collect.rs

@@ -311,8 +311,7 @@ where
     label = "`{Self}` is not an iterator",
     message = "`{Self}` is not an iterator"
 )]
-#[cfg_attr(bootstrap, rustc_skip_array_during_method_dispatch)]
-#[cfg_attr(not(bootstrap), rustc_skip_during_method_dispatch(array, boxed_slice))]
+#[rustc_skip_during_method_dispatch(array, boxed_slice)]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub trait IntoIterator {
     /// The type of the elements being iterated over.