[beta] Prepare Rust 1.84.0

compiler/rustc_feature/src/accepted.rs

@@ -225,7 +225,7 @@ declare_features! (
     /// Allows the use of `if let` expressions.
     (accepted, if_let, "1.0.0", None),
     /// Rescoping temporaries in `if let` to align with Rust 2024.
-    (accepted, if_let_rescope, "CURRENT_RUSTC_VERSION", Some(124085)),
+    (accepted, if_let_rescope, "1.84.0", Some(124085)),
     /// Allows top level or-patterns (`p | q`) in `if let` and `while let`.
     (accepted, if_while_or_patterns, "1.33.0", Some(48215)),
     /// Allows lifetime elision in `impl` headers. For example:
@@ -357,7 +357,7 @@ declare_features! (
     (accepted, repr_transparent, "1.28.0", Some(43036)),
     /// Allows enums like Result<T, E> to be used across FFI, if T's niche value can
     /// be used to describe E or vice-versa.
-    (accepted, result_ffi_guarantees, "CURRENT_RUSTC_VERSION", Some(110503)),
+    (accepted, result_ffi_guarantees, "1.84.0", Some(110503)),
     /// Allows return-position `impl Trait` in traits.
     (accepted, return_position_impl_trait_in_trait, "1.75.0", Some(91611)),
     /// Allows code like `let x: &'static u32 = &42` to work (RFC 1414).
@@ -367,7 +367,7 @@ declare_features! (
     /// Allows `Self` struct constructor (RFC 2302).
     (accepted, self_struct_ctor, "1.32.0", Some(51994)),
     /// Shortern the tail expression lifetime
-    (accepted, shorter_tail_lifetimes, "CURRENT_RUSTC_VERSION", Some(123739)),
+    (accepted, shorter_tail_lifetimes, "1.84.0", Some(123739)),
     /// Allows using subslice patterns, `[a, .., b]` and `[a, xs @ .., b]`.
     (accepted, slice_patterns, "1.42.0", Some(62254)),
     /// Allows use of `&foo[a..b]` as a slicing syntax.

compiler/rustc_feature/src/removed.rs

@@ -101,7 +101,7 @@ declare_features! (
     /// Allows using `#[unsafe_destructor_blind_to_params]` (RFC 1238).
     (removed, dropck_parametricity, "1.38.0", Some(28498), None),
     /// Uses generic effect parameters for ~const bounds
-    (removed, effects, "CURRENT_RUSTC_VERSION", Some(102090),
+    (removed, effects, "1.84.0", Some(102090),
      Some("removed, redundant with `#![feature(const_trait_impl)]`")),
     /// Allows defining `existential type`s.
     (removed, existential_type, "1.38.0", Some(63063),

compiler/rustc_feature/src/unstable.rs

@@ -338,7 +338,7 @@ declare_features! (
     (unstable, riscv_target_feature, "1.45.0", Some(44839)),
     (unstable, rtm_target_feature, "1.35.0", Some(44839)),
     (unstable, s390x_target_feature, "1.82.0", Some(44839)),
-    (unstable, sparc_target_feature, "CURRENT_RUSTC_VERSION", Some(132783)),
+    (unstable, sparc_target_feature, "1.84.0", Some(132783)),
     (unstable, sse4a_target_feature, "1.27.0", Some(44839)),
     (unstable, tbm_target_feature, "1.27.0", Some(44839)),
     (unstable, wasm_target_feature, "1.30.0", Some(44839)),
@@ -532,7 +532,7 @@ declare_features! (
     /// Allows `#[marker]` on certain traits allowing overlapping implementations.
     (unstable, marker_trait_attr, "1.30.0", Some(29864)),
     /// Enables the generic const args MVP (only bare paths, not arbitrary computation).
-    (incomplete, min_generic_const_args, "CURRENT_RUSTC_VERSION", Some(132980)),
+    (incomplete, min_generic_const_args, "1.84.0", Some(132980)),
     /// A minimal, sound subset of specialization intended to be used by the
     /// standard library until the soundness issues with specialization
     /// are fixed.

library/alloc/src/boxed/convert.rs

@@ -110,7 +110,7 @@ impl<T: Clone> From<&[T]> for Box<[T]> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "box_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "box_from_mut_slice", since = "1.84.0")]
 impl<T: Clone> From<&mut [T]> for Box<[T]> {
     /// Converts a `&mut [T]` into a `Box<[T]>`
     ///
@@ -171,7 +171,7 @@ impl From<&str> for Box<str> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "box_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "box_from_mut_slice", since = "1.84.0")]
 impl From<&mut str> for Box<str> {
     /// Converts a `&mut str` into a `Box<str>`
     ///

library/alloc/src/ffi/c_str.rs

@@ -773,7 +773,7 @@ impl From<&CStr> for Box<CStr> {
 }
 
 #[cfg(not(test))]
-#[stable(feature = "box_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "box_from_mut_slice", since = "1.84.0")]
 impl From<&mut CStr> for Box<CStr> {
     /// Converts a `&mut CStr` into a `Box<CStr>`,
     /// by copying the contents into a newly allocated [`Box`].
@@ -921,7 +921,7 @@ impl From<&CStr> for Arc<CStr> {
 }
 
 #[cfg(target_has_atomic = "ptr")]
-#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "shared_from_mut_slice", since = "1.84.0")]
 impl From<&mut CStr> for Arc<CStr> {
     /// Converts a `&mut CStr` into a `Arc<CStr>`,
     /// by copying the contents into a newly allocated [`Arc`].
@@ -953,7 +953,7 @@ impl From<&CStr> for Rc<CStr> {
     }
 }
 
-#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "shared_from_mut_slice", since = "1.84.0")]
 impl From<&mut CStr> for Rc<CStr> {
     /// Converts a `&mut CStr` into a `Rc<CStr>`,
     /// by copying the contents into a newly allocated [`Rc`].

library/alloc/src/rc.rs

@@ -2659,7 +2659,7 @@ impl<T: Clone> From<&[T]> for Rc<[T]> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "shared_from_mut_slice", since = "1.84.0")]
 impl<T: Clone> From<&mut [T]> for Rc<[T]> {
     /// Allocates a reference-counted slice and fills it by cloning `v`'s items.
     ///
@@ -2698,7 +2698,7 @@ impl From<&str> for Rc<str> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "shared_from_mut_slice", since = "1.84.0")]
 impl From<&mut str> for Rc<str> {
     /// Allocates a reference-counted string slice and copies `v` into it.
     ///

library/alloc/src/sync.rs

@@ -3618,7 +3618,7 @@ impl<T: Clone> From<&[T]> for Arc<[T]> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "shared_from_mut_slice", since = "1.84.0")]
 impl<T: Clone> From<&mut [T]> for Arc<[T]> {
     /// Allocates a reference-counted slice and fills it by cloning `v`'s items.
     ///
@@ -3657,7 +3657,7 @@ impl From<&str> for Arc<str> {
 }
 
 #[cfg(not(no_global_oom_handling))]
-#[stable(feature = "shared_from_mut_slice", since = "CURRENT_RUSTC_VERSION")]
+#[stable(feature = "shared_from_mut_slice", since = "1.84.0")]
 impl From<&mut str> for Arc<str> {
     /// Allocates a reference-counted `str` and copies `v` into it.
     ///

library/core/src/cell.rs

@@ -2133,8 +2133,8 @@ impl<T: ?Sized> UnsafeCell<T> {
     /// assert_eq!(*uc.get_mut(), 41);
     /// ```
     #[inline(always)]
-    #[stable(feature = "unsafe_cell_from_mut", since = "CURRENT_RUSTC_VERSION")]
-    #[rustc_const_stable(feature = "unsafe_cell_from_mut", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "unsafe_cell_from_mut", since = "1.84.0")]
+    #[rustc_const_stable(feature = "unsafe_cell_from_mut", since = "1.84.0")]
     #[cfg_attr(bootstrap, rustc_allow_const_fn_unstable(const_mut_refs))]
     pub const fn from_mut(value: &mut T) -> &mut UnsafeCell<T> {
         // SAFETY: `UnsafeCell<T>` has the same memory layout as `T` due to #[repr(transparent)].

library/core/src/char/methods.rs

@@ -729,7 +729,7 @@ impl char {
     /// '𝕊'.encode_utf16(&mut b);
     /// ```
     #[stable(feature = "unicode_encode_char", since = "1.15.0")]
-    #[rustc_const_stable(feature = "const_char_encode_utf16", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_char_encode_utf16", since = "1.84.0")]
     #[inline]
     pub const fn encode_utf16(self, dst: &mut [u16]) -> &mut [u16] {
         encode_utf16_raw(self as u32, dst)
@@ -1299,7 +1299,7 @@ impl char {
     ///
     /// [`to_ascii_uppercase()`]: #method.to_ascii_uppercase
     #[stable(feature = "ascii_methods_on_intrinsics", since = "1.23.0")]
-    #[rustc_const_stable(feature = "const_make_ascii", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_make_ascii", since = "1.84.0")]
     #[inline]
     pub const fn make_ascii_uppercase(&mut self) {
         *self = self.to_ascii_uppercase();
@@ -1325,7 +1325,7 @@ impl char {
     ///
     /// [`to_ascii_lowercase()`]: #method.to_ascii_lowercase
     #[stable(feature = "ascii_methods_on_intrinsics", since = "1.23.0")]
-    #[rustc_const_stable(feature = "const_make_ascii", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_make_ascii", since = "1.84.0")]
     #[inline]
     pub const fn make_ascii_lowercase(&mut self) {
         *self = self.to_ascii_lowercase();
@@ -1838,7 +1838,7 @@ pub const fn encode_utf8_raw(code: u32, dst: &mut [u8]) -> &mut [u8] {
 #[unstable(feature = "char_internals", reason = "exposed only for libstd", issue = "none")]
 #[cfg_attr(
     bootstrap,
-    rustc_const_stable(feature = "const_char_encode_utf16", since = "CURRENT_RUSTC_VERSION")
+    rustc_const_stable(feature = "const_char_encode_utf16", since = "1.84.0")
 )]
 #[doc(hidden)]
 #[inline]

library/core/src/fmt/mod.rs

@@ -438,7 +438,7 @@ impl<'a> Arguments<'a> {
     /// assert_eq!(format_args!("{:?}", std::env::current_dir()).as_str(), None);
     /// ```
     #[stable(feature = "fmt_as_str", since = "1.52.0")]
-    #[rustc_const_stable(feature = "const_arguments_as_str", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_arguments_as_str", since = "1.84.0")]
     #[must_use]
     #[inline]
     pub const fn as_str(&self) -> Option<&'static str> {

library/core/src/intrinsics/mod.rs

@@ -1494,7 +1494,7 @@ pub const fn cold_path() {}
 /// This intrinsic does not have a stable counterpart.
 #[cfg_attr(
     bootstrap,
-    rustc_const_stable(feature = "const_likely", since = "CURRENT_RUSTC_VERSION")
+    rustc_const_stable(feature = "const_likely", since = "1.84.0")
 )]
 #[unstable(feature = "core_intrinsics", issue = "none")]
 #[rustc_nounwind]
@@ -1526,7 +1526,7 @@ pub const fn likely(b: bool) -> bool {
 /// This intrinsic does not have a stable counterpart.
 #[cfg_attr(
     bootstrap,
-    rustc_const_stable(feature = "const_likely", since = "CURRENT_RUSTC_VERSION")
+    rustc_const_stable(feature = "const_likely", since = "1.84.0")
 )]
 #[unstable(feature = "core_intrinsics", issue = "none")]
 #[rustc_nounwind]
@@ -3629,7 +3629,7 @@ pub(crate) macro const_eval_select {
 /// ```
 #[cfg_attr(
     bootstrap,
-    rustc_const_stable(feature = "const_is_val_statically_known", since = "CURRENT_RUSTC_VERSION")
+    rustc_const_stable(feature = "const_is_val_statically_known", since = "1.84.0")
 )]
 #[cfg_attr(not(bootstrap), rustc_const_stable_indirect)]
 #[rustc_nounwind]

library/core/src/mem/maybe_uninit.rs

@@ -909,7 +909,7 @@ impl<T> MaybeUninit<T> {
     #[stable(feature = "maybe_uninit_ref", since = "1.55.0")]
     #[rustc_const_stable(
         feature = "const_maybe_uninit_assume_init",
-        since = "CURRENT_RUSTC_VERSION"
+        since = "1.84.0"
     )]
     #[inline(always)]
     pub const unsafe fn assume_init_mut(&mut self) -> &mut T {

library/core/src/net/ip_addr.rs

@@ -1601,8 +1601,8 @@ impl Ipv6Addr {
     /// ```
     #[must_use]
     #[inline]
-    #[stable(feature = "ipv6_is_unique_local", since = "CURRENT_RUSTC_VERSION")]
-    #[rustc_const_stable(feature = "ipv6_is_unique_local", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "ipv6_is_unique_local", since = "1.84.0")]
+    #[rustc_const_stable(feature = "ipv6_is_unique_local", since = "1.84.0")]
     pub const fn is_unique_local(&self) -> bool {
         (self.segments()[0] & 0xfe00) == 0xfc00
     }
@@ -1679,8 +1679,8 @@ impl Ipv6Addr {
     /// ```
     #[must_use]
     #[inline]
-    #[stable(feature = "ipv6_is_unique_local", since = "CURRENT_RUSTC_VERSION")]
-    #[rustc_const_stable(feature = "ipv6_is_unique_local", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "ipv6_is_unique_local", since = "1.84.0")]
+    #[rustc_const_stable(feature = "ipv6_is_unique_local", since = "1.84.0")]
     pub const fn is_unicast_link_local(&self) -> bool {
         (self.segments()[0] & 0xffc0) == 0xfe80
     }

library/core/src/num/int_macros.rs

@@ -1613,8 +1613,8 @@ macro_rules! int_impl {
         /// ```
         #[doc = concat!("assert_eq!(10", stringify!($SelfT), ".checked_isqrt(), Some(3));")]
         /// ```
-        #[stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
-        #[rustc_const_stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
+        #[stable(feature = "isqrt", since = "1.84.0")]
+        #[rustc_const_stable(feature = "isqrt", since = "1.84.0")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline]
@@ -2859,8 +2859,8 @@ macro_rules! int_impl {
         /// ```
         #[doc = concat!("assert_eq!(10", stringify!($SelfT), ".isqrt(), 3);")]
         /// ```
-        #[stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
-        #[rustc_const_stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
+        #[stable(feature = "isqrt", since = "1.84.0")]
+        #[rustc_const_stable(feature = "isqrt", since = "1.84.0")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline]

library/core/src/num/mod.rs

@@ -677,7 +677,7 @@ impl u8 {
     ///
     /// [`to_ascii_uppercase`]: Self::to_ascii_uppercase
     #[stable(feature = "ascii_methods_on_intrinsics", since = "1.23.0")]
-    #[rustc_const_stable(feature = "const_make_ascii", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_make_ascii", since = "1.84.0")]
     #[inline]
     pub const fn make_ascii_uppercase(&mut self) {
         *self = self.to_ascii_uppercase();
@@ -703,7 +703,7 @@ impl u8 {
     ///
     /// [`to_ascii_lowercase`]: Self::to_ascii_lowercase
     #[stable(feature = "ascii_methods_on_intrinsics", since = "1.23.0")]
-    #[rustc_const_stable(feature = "const_make_ascii", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_make_ascii", since = "1.84.0")]
     #[inline]
     pub const fn make_ascii_lowercase(&mut self) {
         *self = self.to_ascii_lowercase();

library/core/src/num/nonzero.rs

@@ -139,9 +139,9 @@ impl_nonzero_fmt! {
     LowerHex
     #[stable(feature = "nonzero", since = "1.28.0")]
     UpperHex
-    #[stable(feature = "nonzero_fmt_exp", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "nonzero_fmt_exp", since = "1.84.0")]
     LowerExp
-    #[stable(feature = "nonzero_fmt_exp", since = "CURRENT_RUSTC_VERSION")]
+    #[stable(feature = "nonzero_fmt_exp", since = "1.84.0")]
     UpperExp
 }
 
@@ -1587,8 +1587,8 @@ macro_rules! nonzero_integer_signedness_dependent_methods {
         /// # Some(())
         /// # }
         /// ```
-        #[stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
-        #[rustc_const_stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
+        #[stable(feature = "isqrt", since = "1.84.0")]
+        #[rustc_const_stable(feature = "isqrt", since = "1.84.0")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline]

library/core/src/num/uint_macros.rs

@@ -2838,8 +2838,8 @@ macro_rules! uint_impl {
         /// ```
         #[doc = concat!("assert_eq!(10", stringify!($SelfT), ".isqrt(), 3);")]
         /// ```
-        #[stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
-        #[rustc_const_stable(feature = "isqrt", since = "CURRENT_RUSTC_VERSION")]
+        #[stable(feature = "isqrt", since = "1.84.0")]
+        #[rustc_const_stable(feature = "isqrt", since = "1.84.0")]
         #[must_use = "this returns the result of the operation, \
                       without modifying the original"]
         #[inline]

library/core/src/option.rs

@@ -738,7 +738,7 @@ impl<T> Option<T> {
     #[inline]
     #[must_use]
     #[stable(feature = "pin", since = "1.33.0")]
-    #[rustc_const_stable(feature = "const_option_ext", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_option_ext", since = "1.84.0")]
     pub const fn as_pin_ref(self: Pin<&Self>) -> Option<Pin<&T>> {
         // FIXME(const-hack): use `map` once that is possible
         match Pin::get_ref(self).as_ref() {
@@ -755,7 +755,7 @@ impl<T> Option<T> {
     #[inline]
     #[must_use]
     #[stable(feature = "pin", since = "1.33.0")]
-    #[rustc_const_stable(feature = "const_option_ext", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_option_ext", since = "1.84.0")]
     pub const fn as_pin_mut(self: Pin<&mut Self>) -> Option<Pin<&mut T>> {
         // SAFETY: `get_unchecked_mut` is never used to move the `Option` inside `self`.
         // `x` is guaranteed to be pinned because it comes from `self` which is pinned.
@@ -802,7 +802,7 @@ impl<T> Option<T> {
     #[inline]
     #[must_use]
     #[stable(feature = "option_as_slice", since = "1.75.0")]
-    #[rustc_const_stable(feature = "const_option_ext", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_option_ext", since = "1.84.0")]
     pub const fn as_slice(&self) -> &[T] {
         // SAFETY: When the `Option` is `Some`, we're using the actual pointer
         // to the payload, with a length of 1, so this is equivalent to
@@ -857,7 +857,7 @@ impl<T> Option<T> {
     #[inline]
     #[must_use]
     #[stable(feature = "option_as_slice", since = "1.75.0")]
-    #[rustc_const_stable(feature = "const_option_ext", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_option_ext", since = "1.84.0")]
     pub const fn as_mut_slice(&mut self) -> &mut [T] {
         // SAFETY: When the `Option` is `Some`, we're using the actual pointer
         // to the payload, with a length of 1, so this is equivalent to

library/core/src/panic.rs

@@ -208,7 +208,7 @@ pub macro const_panic {
         #[rustc_allow_const_fn_unstable(const_eval_select)]
         #[inline(always)] // inline the wrapper
         #[track_caller]
-        #[cfg_attr(bootstrap, rustc_const_stable(feature = "const_panic", since = "CURRENT_RUSTC_VERSION"))]
+        #[cfg_attr(bootstrap, rustc_const_stable(feature = "const_panic", since = "1.84.0"))]
         const fn do_panic($($arg: $ty),*) -> ! {
             $crate::intrinsics::const_eval_select!(
                 @capture { $($arg: $ty = $arg),* } -> !:

library/core/src/panic/panic_info.rs

@@ -165,7 +165,7 @@ impl<'a> PanicMessage<'a> {
     ///
     /// See [`fmt::Arguments::as_str`] for details.
     #[stable(feature = "panic_info_message", since = "1.81.0")]
-    #[rustc_const_stable(feature = "const_arguments_as_str", since = "CURRENT_RUSTC_VERSION")]
+    #[rustc_const_stable(feature = "const_arguments_as_str", since = "1.84.0")]
     #[must_use]
     #[inline]
     pub const fn as_str(&self) -> Option<&'static str> {