Auto merge of #71439 - Mark-Simulacrum:stage0-next, r=jonas-schievink

Bump bootstrap compiler

This bumps the bootstrap compiler and the rustfmt that x.py fmt uses.

Author: bors

Diff for: src/bootstrap/channel.rs

@@ -13,7 +13,7 @@ use build_helper::output;
 use crate::Build;
 
 // The version number
-pub const CFG_RELEASE_NUM: &str = "1.44.0";
+pub const CFG_RELEASE_NUM: &str = "1.45.0";
 
 pub struct GitInfo {
     inner: Option<Info>,

Diff for: src/liballoc/lib.rs

@@ -99,7 +99,7 @@
 #![feature(internal_uninit_const)]
 #![feature(lang_items)]
 #![feature(libc)]
-#![cfg_attr(not(bootstrap), feature(negative_impls))]
+#![feature(negative_impls)]
 #![feature(new_uninit)]
 #![feature(nll)]
 #![feature(optin_builtin_traits)]

Diff for: src/liballoc/rc.rs

@@ -279,7 +279,6 @@ struct RcBox<T: ?Sized> {
 /// type `T`.
 ///
 /// [get_mut]: #method.get_mut
-#[cfg_attr(all(bootstrap, not(test)), lang = "rc")]
 #[cfg_attr(not(test), rustc_diagnostic_item = "Rc")]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct Rc<T: ?Sized> {

Diff for: src/liballoc/sync.rs

@@ -207,7 +207,6 @@ macro_rules! acquire {
 /// counting in general.
 ///
 /// [rc_examples]: ../../std/rc/index.html#examples
-#[cfg_attr(all(bootstrap, not(test)), lang = "arc")]
 #[cfg_attr(not(test), rustc_diagnostic_item = "Arc")]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct Arc<T: ?Sized> {

Diff for: src/libcore/clone.rs

@@ -231,6 +231,5 @@ mod impls {
 
     /// Shared references can be cloned, but mutable references *cannot*!
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[cfg(not(bootstrap))]
     impl<T: ?Sized> !Clone for &mut T {}
 }

Diff for: src/libcore/convert/num.rs

@@ -28,14 +28,7 @@ macro_rules! impl_float_to_int {
                 #[doc(hidden)]
                 #[inline]
                 unsafe fn to_int_unchecked(self) -> $Int {
-                    #[cfg(bootstrap)]
-                    {
-                        crate::intrinsics::float_to_int_approx_unchecked(self)
-                    }
-                    #[cfg(not(bootstrap))]
-                    {
-                        crate::intrinsics::float_to_int_unchecked(self)
-                    }
+                    crate::intrinsics::float_to_int_unchecked(self)
                 }
             }
         )+

Diff for: src/libcore/future/mod.rs

@@ -2,7 +2,6 @@
 
 //! Asynchronous values.
 
-#[cfg(not(bootstrap))]
 use crate::{
     ops::{Generator, GeneratorState},
     pin::Pin,
@@ -24,16 +23,13 @@ pub use self::future::Future;
 /// It also simplifies the HIR lowering of `.await`.
 #[doc(hidden)]
 #[unstable(feature = "gen_future", issue = "50547")]
-#[cfg(not(bootstrap))]
 #[derive(Debug, Copy, Clone)]
 pub struct ResumeTy(NonNull<Context<'static>>);
 
 #[unstable(feature = "gen_future", issue = "50547")]
-#[cfg(not(bootstrap))]
 unsafe impl Send for ResumeTy {}
 
 #[unstable(feature = "gen_future", issue = "50547")]
-#[cfg(not(bootstrap))]
 unsafe impl Sync for ResumeTy {}
 
 /// Wrap a generator in a future.
@@ -43,7 +39,6 @@ unsafe impl Sync for ResumeTy {}
 // This is `const` to avoid extra errors after we recover from `const async fn`
 #[doc(hidden)]
 #[unstable(feature = "gen_future", issue = "50547")]
-#[cfg(not(bootstrap))]
 #[inline]
 pub const fn from_generator<T>(gen: T) -> impl Future<Output = T::Return>
 where
@@ -75,7 +70,6 @@ where
 
 #[doc(hidden)]
 #[unstable(feature = "gen_future", issue = "50547")]
-#[cfg(not(bootstrap))]
 #[inline]
 pub unsafe fn get_context<'a, 'b>(cx: ResumeTy) -> &'a mut Context<'b> {
     &mut *cx.0.as_ptr().cast()

Diff for: src/libcore/intrinsics.rs

@@ -980,22 +980,7 @@ extern "rust-intrinsic" {
     ///
     /// The stabilized version of this intrinsic is
     /// [`std::mem::size_of_val`](../../std/mem/fn.size_of_val.html).
-    #[cfg(bootstrap)]
-    pub fn size_of_val<T: ?Sized>(_: &T) -> usize;
-    /// The minimum alignment of the type of the value that `val` points to.
-    ///
-    /// The stabilized version of this intrinsic is
-    /// [`std::mem::min_align_of_val`](../../std/mem/fn.min_align_of_val.html).
-    #[cfg(bootstrap)]
-    pub fn min_align_of_val<T: ?Sized>(_: &T) -> usize;
-
-    /// The size of the referenced value in bytes.
-    ///
-    /// The stabilized version of this intrinsic is
-    /// [`std::mem::size_of_val`](../../std/mem/fn.size_of_val.html).
-    #[cfg(not(bootstrap))]
     pub fn size_of_val<T: ?Sized>(_: *const T) -> usize;
-    #[cfg(not(bootstrap))]
     pub fn min_align_of_val<T: ?Sized>(_: *const T) -> usize;
 
     /// Gets a static string slice containing the name of a type.
@@ -1016,22 +1001,14 @@ extern "rust-intrinsic" {
 
     /// A guard for unsafe functions that cannot ever be executed if `T` is uninhabited:
     /// This will statically either panic, or do nothing.
-    #[cfg(bootstrap)]
-    pub fn panic_if_uninhabited<T>();
-
-    /// A guard for unsafe functions that cannot ever be executed if `T` is uninhabited:
-    /// This will statically either panic, or do nothing.
-    #[cfg(not(bootstrap))]
     pub fn assert_inhabited<T>();
 
     /// A guard for unsafe functions that cannot ever be executed if `T` does not permit
     /// zero-initialization: This will statically either panic, or do nothing.
-    #[cfg(not(bootstrap))]
     pub fn assert_zero_valid<T>();
 
     /// A guard for unsafe functions that cannot ever be executed if `T` has invalid
     /// bit patterns: This will statically either panic, or do nothing.
-    #[cfg(not(bootstrap))]
     pub fn assert_uninit_valid<T>();
 
     /// Gets a reference to a static `Location` indicating where it was called.
@@ -1597,17 +1574,10 @@ extern "rust-intrinsic" {
     /// May assume inputs are finite.
     pub fn frem_fast<T: Copy>(a: T, b: T) -> T;
 
-    /// Convert with LLVM’s fptoui/fptosi, which may return undef for values out of range
-    /// (<https://github.com/rust-lang/rust/issues/10184>)
-    /// This is under stabilization at <https://github.com/rust-lang/rust/issues/67058>
-    #[cfg(bootstrap)]
-    pub fn float_to_int_approx_unchecked<Float: Copy, Int: Copy>(value: Float) -> Int;
-
     /// Convert with LLVM’s fptoui/fptosi, which may return undef for values out of range
     /// (<https://github.com/rust-lang/rust/issues/10184>)
     ///
     /// Stabilized as `f32::to_int_unchecked` and `f64::to_int_unchecked`.
-    #[cfg(not(bootstrap))]
     pub fn float_to_int_unchecked<Float: Copy, Int: Copy>(value: Float) -> Int;
 
     /// Returns the number of bits set in an integer type `T`
@@ -1877,10 +1847,7 @@ extern "rust-intrinsic" {
     /// takes the data pointer and a pointer to the target-specific exception
     /// object that was caught. For more information see the compiler's
     /// source as well as std's catch implementation.
-    #[cfg(not(bootstrap))]
     pub fn r#try(try_fn: fn(*mut u8), data: *mut u8, catch_fn: fn(*mut u8, *mut u8)) -> i32;
-    #[cfg(bootstrap)]
-    pub fn r#try(f: fn(*mut u8), data: *mut u8, local_ptr: *mut u8) -> i32;
 
     /// Emits a `!nontemporal` store according to LLVM (see their docs).
     /// Probably will never become stable.

Diff for: src/libcore/iter/range.rs

@@ -70,7 +70,7 @@ macro_rules! step_identical_methods {
         fn sub_one(&self) -> Self {
             Sub::sub(*self, 1)
         }
-    }
+    };
 }
 
 macro_rules! step_impl_unsigned {

Diff for: src/libcore/lib.rs

@@ -99,7 +99,7 @@
 #![feature(lang_items)]
 #![feature(link_llvm_intrinsics)]
 #![feature(llvm_asm)]
-#![cfg_attr(not(bootstrap), feature(negative_impls))]
+#![feature(negative_impls)]
 #![feature(never_type)]
 #![feature(nll)]
 #![feature(exhaustive_patterns)]

Diff for: src/libcore/macros/mod.rs

@@ -1,27 +1,3 @@
-#[cfg(bootstrap)]
-#[doc(include = "panic.md")]
-#[macro_export]
-#[allow_internal_unstable(core_panic, track_caller)]
-#[stable(feature = "core", since = "1.6.0")]
-macro_rules! panic {
-    () => (
-        $crate::panic!("explicit panic")
-    );
-    ($msg:expr) => (
-        $crate::panicking::panic($msg)
-    );
-    ($msg:expr,) => (
-        $crate::panic!($msg)
-    );
-    ($fmt:expr, $($arg:tt)+) => (
-        $crate::panicking::panic_fmt(
-            $crate::format_args!($fmt, $($arg)+),
-            $crate::panic::Location::caller(),
-        )
-    );
-}
-
-#[cfg(not(bootstrap))]
 #[doc(include = "panic.md")]
 #[macro_export]
 #[allow_internal_unstable(core_panic, track_caller)]
@@ -1341,25 +1317,6 @@ pub(crate) mod builtin {
     /// Read the [unstable book] for the usage.
     ///
     /// [unstable book]: ../unstable-book/library-features/asm.html
-    #[cfg(bootstrap)]
-    #[unstable(
-        feature = "llvm_asm",
-        issue = "70173",
-        reason = "inline assembly is not stable enough for use and is subject to change"
-    )]
-    #[macro_export]
-    #[allow_internal_unstable(asm)]
-    macro_rules! llvm_asm {
-        // Redirect to asm! for stage0
-        ($($arg:tt)*) => { $crate::asm!($($arg)*) }
-    }
-
-    /// Inline assembly.
-    ///
-    /// Read the [unstable book] for the usage.
-    ///
-    /// [unstable book]: ../unstable-book/library-features/asm.html
-    #[cfg(not(bootstrap))]
     #[unstable(
         feature = "llvm_asm",
         issue = "70173",
@@ -1460,7 +1417,6 @@ pub(crate) mod builtin {
     }
 
     /// Keeps the item it's applied to if the passed path is accessible, and removes it otherwise.
-    #[cfg(not(bootstrap))]
     #[unstable(
         feature = "cfg_accessible",
         issue = "64797",

Diff for: src/libcore/marker.rs

@@ -90,7 +90,7 @@ impl<T: ?Sized> !Send for *mut T {}
             ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>"
 )]
 #[fundamental] // for Default, for example, which requires that `[T]: !Default` be evaluatable
-#[cfg_attr(not(bootstrap), rustc_specialization_trait)]
+#[rustc_specialization_trait]
 pub trait Sized {
     // Empty.
 }

Diff for: src/libcore/mem/maybe_uninit.rs

@@ -495,9 +495,6 @@ impl<T> MaybeUninit<T> {
     #[inline(always)]
     #[rustc_diagnostic_item = "assume_init"]
     pub unsafe fn assume_init(self) -> T {
-        #[cfg(bootstrap)]
-        intrinsics::panic_if_uninhabited::<T>();
-        #[cfg(not(bootstrap))]
         intrinsics::assert_inhabited::<T>();
         ManuallyDrop::into_inner(self.value)
     }
@@ -562,9 +559,6 @@ impl<T> MaybeUninit<T> {
     #[unstable(feature = "maybe_uninit_extra", issue = "63567")]
     #[inline(always)]
     pub unsafe fn read(&self) -> T {
-        #[cfg(bootstrap)]
-        intrinsics::panic_if_uninhabited::<T>();
-        #[cfg(not(bootstrap))]
         intrinsics::assert_inhabited::<T>();
         self.as_ptr().read()
     }
@@ -627,9 +621,6 @@ impl<T> MaybeUninit<T> {
     #[unstable(feature = "maybe_uninit_ref", issue = "63568")]
     #[inline(always)]
     pub unsafe fn get_ref(&self) -> &T {
-        #[cfg(bootstrap)]
-        intrinsics::panic_if_uninhabited::<T>();
-        #[cfg(not(bootstrap))]
         intrinsics::assert_inhabited::<T>();
         &*self.value
     }
@@ -748,9 +739,6 @@ impl<T> MaybeUninit<T> {
     #[unstable(feature = "maybe_uninit_ref", issue = "63568")]
     #[inline(always)]
     pub unsafe fn get_mut(&mut self) -> &mut T {
-        #[cfg(bootstrap)]
-        intrinsics::panic_if_uninhabited::<T>();
-        #[cfg(not(bootstrap))]
         intrinsics::assert_inhabited::<T>();
         &mut *self.value
     }

Diff for: src/libcore/mem/mod.rs

@@ -378,7 +378,6 @@ pub fn size_of_val<T: ?Sized>(val: &T) -> usize {
 /// assert_eq!(13, unsafe { mem::size_of_val_raw(y) });
 /// ```
 #[inline]
-#[cfg(not(bootstrap))]
 #[unstable(feature = "layout_for_ptr", issue = "69835")]
 pub unsafe fn size_of_val_raw<T: ?Sized>(val: *const T) -> usize {
     intrinsics::size_of_val(val)
@@ -509,7 +508,6 @@ pub fn align_of_val<T: ?Sized>(val: &T) -> usize {
 /// assert_eq!(4, unsafe { mem::align_of_val_raw(&5i32) });
 /// ```
 #[inline]
-#[cfg(not(bootstrap))]
 #[unstable(feature = "layout_for_ptr", issue = "69835")]
 pub unsafe fn align_of_val_raw<T: ?Sized>(val: *const T) -> usize {
     intrinsics::min_align_of_val(val)
@@ -621,10 +619,7 @@ pub const fn needs_drop<T>() -> bool {
 #[allow(deprecated)]
 #[rustc_diagnostic_item = "mem_zeroed"]
 pub unsafe fn zeroed<T>() -> T {
-    #[cfg(not(bootstrap))]
     intrinsics::assert_zero_valid::<T>();
-    #[cfg(bootstrap)]
-    intrinsics::panic_if_uninhabited::<T>();
     MaybeUninit::zeroed().assume_init()
 }
 
@@ -657,10 +652,7 @@ pub unsafe fn zeroed<T>() -> T {
 #[allow(deprecated)]
 #[rustc_diagnostic_item = "mem_uninitialized"]
 pub unsafe fn uninitialized<T>() -> T {
-    #[cfg(not(bootstrap))]
     intrinsics::assert_uninit_valid::<T>();
-    #[cfg(bootstrap)]
-    intrinsics::panic_if_uninhabited::<T>();
     MaybeUninit::uninit().assume_init()
 }
 

Diff for: src/libcore/ops/deref.rs

@@ -81,7 +81,6 @@ impl<T: ?Sized> Deref for &T {
     }
 }
 
-#[cfg(not(bootstrap))]
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<T: ?Sized> !DerefMut for &T {}
 

Diff for: src/libcore/ops/index.rs

@@ -65,7 +65,7 @@ pub trait Index<Idx: ?Sized> {
 
     /// Performs the indexing (`container[index]`) operation.
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[cfg_attr(not(bootstrap), track_caller)]
+    #[track_caller]
     fn index(&self, index: Idx) -> &Self::Output;
 }
 
@@ -167,6 +167,6 @@ see chapter in The Book <https://doc.rust-lang.org/book/ch08-02-strings.html#ind
 pub trait IndexMut<Idx: ?Sized>: Index<Idx> {
     /// Performs the mutable indexing (`container[index]`) operation.
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[cfg_attr(not(bootstrap), track_caller)]
+    #[track_caller]
     fn index_mut(&mut self, index: Idx) -> &mut Self::Output;
 }