Auto merge of rust-lang#130179 - workingjubilee:rollup-l78cv44, r=workingjubilee

Rollup of 11 pull requests

Successful merges:

 - rust-lang#128316 (Stabilize most of `io_error_more`)
 - rust-lang#129473 (use  `download-ci-llvm=true` in the default compiler config)
 - rust-lang#129529 (Add test to build crates used by r-a on stable)
 - rust-lang#129981 (Remove `serialized_bitcode` from `LtoModuleCodegen`.)
 - rust-lang#130094 (Inform the solver if evaluation is concurrent)
 - rust-lang#130132 ([illumos] enable SIGSEGV handler to detect stack overflows)
 - rust-lang#130146 (bootstrap `naked_asm!` for `compiler-builtins`)
 - rust-lang#130149 (Helper function for formatting with `LifetimeSuggestionPosition`)
 - rust-lang#130152 (adapt a test for llvm 20)
 - rust-lang#130162 (bump download-ci-llvm-stamp)
 - rust-lang#130164 (move some const fn out of the const_ptr_as_ref feature)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

Diff for: core/src/arch.rs

@@ -17,6 +17,20 @@ pub macro asm("assembly template", $(operands,)* $(options($(option),*))?) {
     /* compiler built-in */
 }
 
+/// Inline assembly used in combination with `#[naked]` functions.
+///
+/// Refer to [Rust By Example] for a usage guide and the [reference] for
+/// detailed information about the syntax and available options.
+///
+/// [Rust By Example]: https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html
+/// [reference]: https://doc.rust-lang.org/nightly/reference/inline-assembly.html
+#[unstable(feature = "naked_functions", issue = "90957")]
+#[rustc_builtin_macro]
+#[cfg(not(bootstrap))]
+pub macro naked_asm("assembly template", $(operands,)* $(options($(option),*))?) {
+    /* compiler built-in */
+}
+
 /// Module-level inline assembly.
 ///
 /// Refer to [Rust By Example] for a usage guide and the [reference] for

Diff for: core/src/ptr/const_ptr.rs

@@ -270,7 +270,7 @@ impl<T: ?Sized> *const T {
     /// }
     /// ```
     #[stable(feature = "ptr_as_ref", since = "1.9.0")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "const_ptr_is_null", issue = "74939")]
     #[inline]
     pub const unsafe fn as_ref<'a>(self) -> Option<&'a T> {
         // SAFETY: the caller must guarantee that `self` is valid
@@ -302,7 +302,7 @@ impl<T: ?Sized> *const T {
     /// ```
     // FIXME: mention it in the docs for `as_ref` and `as_uninit_ref` once stabilized.
     #[unstable(feature = "ptr_as_ref_unchecked", issue = "122034")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "ptr_as_ref_unchecked", issue = "122034")]
     #[inline]
     #[must_use]
     pub const unsafe fn as_ref_unchecked<'a>(self) -> &'a T {
@@ -336,7 +336,7 @@ impl<T: ?Sized> *const T {
     /// ```
     #[inline]
     #[unstable(feature = "ptr_as_uninit", issue = "75402")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "ptr_as_uninit", issue = "75402")]
     pub const unsafe fn as_uninit_ref<'a>(self) -> Option<&'a MaybeUninit<T>>
     where
         T: Sized,
@@ -1664,7 +1664,7 @@ impl<T> *const [T] {
     /// [allocated object]: crate::ptr#allocated-object
     #[inline]
     #[unstable(feature = "ptr_as_uninit", issue = "75402")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "ptr_as_uninit", issue = "75402")]
     pub const unsafe fn as_uninit_slice<'a>(self) -> Option<&'a [MaybeUninit<T>]> {
         if self.is_null() {
             None

Diff for: core/src/ptr/mut_ptr.rs

@@ -261,7 +261,7 @@ impl<T: ?Sized> *mut T {
     /// }
     /// ```
     #[stable(feature = "ptr_as_ref", since = "1.9.0")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "const_ptr_is_null", issue = "74939")]
     #[inline]
     pub const unsafe fn as_ref<'a>(self) -> Option<&'a T> {
         // SAFETY: the caller must guarantee that `self` is valid for a
@@ -295,7 +295,7 @@ impl<T: ?Sized> *mut T {
     /// ```
     // FIXME: mention it in the docs for `as_ref` and `as_uninit_ref` once stabilized.
     #[unstable(feature = "ptr_as_ref_unchecked", issue = "122034")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "ptr_as_ref_unchecked", issue = "122034")]
     #[inline]
     #[must_use]
     pub const unsafe fn as_ref_unchecked<'a>(self) -> &'a T {
@@ -334,7 +334,7 @@ impl<T: ?Sized> *mut T {
     /// ```
     #[inline]
     #[unstable(feature = "ptr_as_uninit", issue = "75402")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "ptr_as_uninit", issue = "75402")]
     pub const unsafe fn as_uninit_ref<'a>(self) -> Option<&'a MaybeUninit<T>>
     where
         T: Sized,
@@ -580,7 +580,7 @@ impl<T: ?Sized> *mut T {
     /// println!("{s:?}"); // It'll print: "[4, 2, 3]".
     /// ```
     #[stable(feature = "ptr_as_ref", since = "1.9.0")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "const_ptr_is_null", issue = "74939")]
     #[inline]
     pub const unsafe fn as_mut<'a>(self) -> Option<&'a mut T> {
         // SAFETY: the caller must guarantee that `self` is be valid for
@@ -616,7 +616,7 @@ impl<T: ?Sized> *mut T {
     /// ```
     // FIXME: mention it in the docs for `as_mut` and `as_uninit_mut` once stabilized.
     #[unstable(feature = "ptr_as_ref_unchecked", issue = "122034")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "ptr_as_ref_unchecked", issue = "122034")]
     #[inline]
     #[must_use]
     pub const unsafe fn as_mut_unchecked<'a>(self) -> &'a mut T {
@@ -639,7 +639,7 @@ impl<T: ?Sized> *mut T {
     /// the pointer is [convertible to a reference](crate::ptr#pointer-to-reference-conversion).
     #[inline]
     #[unstable(feature = "ptr_as_uninit", issue = "75402")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "ptr_as_uninit", issue = "75402")]
     pub const unsafe fn as_uninit_mut<'a>(self) -> Option<&'a mut MaybeUninit<T>>
     where
         T: Sized,
@@ -2016,7 +2016,7 @@ impl<T> *mut [T] {
     /// [allocated object]: crate::ptr#allocated-object
     #[inline]
     #[unstable(feature = "ptr_as_uninit", issue = "75402")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "ptr_as_uninit", issue = "75402")]
     pub const unsafe fn as_uninit_slice<'a>(self) -> Option<&'a [MaybeUninit<T>]> {
         if self.is_null() {
             None
@@ -2068,7 +2068,7 @@ impl<T> *mut [T] {
     /// [allocated object]: crate::ptr#allocated-object
     #[inline]
     #[unstable(feature = "ptr_as_uninit", issue = "75402")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "ptr_as_uninit", issue = "75402")]
     pub const unsafe fn as_uninit_slice_mut<'a>(self) -> Option<&'a mut [MaybeUninit<T>]> {
         if self.is_null() {
             None

Diff for: core/src/ptr/non_null.rs

@@ -133,7 +133,7 @@ impl<T: Sized> NonNull<T> {
     #[inline]
     #[must_use]
     #[unstable(feature = "ptr_as_uninit", issue = "75402")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "ptr_as_uninit", issue = "75402")]
     pub const unsafe fn as_uninit_ref<'a>(self) -> &'a MaybeUninit<T> {
         // SAFETY: the caller must guarantee that `self` meets all the
         // requirements for a reference.
@@ -157,7 +157,7 @@ impl<T: Sized> NonNull<T> {
     #[inline]
     #[must_use]
     #[unstable(feature = "ptr_as_uninit", issue = "75402")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "ptr_as_uninit", issue = "75402")]
     pub const unsafe fn as_uninit_mut<'a>(self) -> &'a mut MaybeUninit<T> {
         // SAFETY: the caller must guarantee that `self` meets all the
         // requirements for a reference.
@@ -1563,7 +1563,7 @@ impl<T> NonNull<[T]> {
     #[inline]
     #[must_use]
     #[unstable(feature = "ptr_as_uninit", issue = "75402")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "ptr_as_uninit", issue = "75402")]
     pub const unsafe fn as_uninit_slice<'a>(self) -> &'a [MaybeUninit<T>] {
         // SAFETY: the caller must uphold the safety contract for `as_uninit_slice`.
         unsafe { slice::from_raw_parts(self.cast().as_ptr(), self.len()) }
@@ -1628,7 +1628,7 @@ impl<T> NonNull<[T]> {
     #[inline]
     #[must_use]
     #[unstable(feature = "ptr_as_uninit", issue = "75402")]
-    #[rustc_const_unstable(feature = "const_ptr_as_ref", issue = "91822")]
+    #[rustc_const_unstable(feature = "ptr_as_uninit", issue = "75402")]
     pub const unsafe fn as_uninit_slice_mut<'a>(self) -> &'a mut [MaybeUninit<T>] {
         // SAFETY: the caller must uphold the safety contract for `as_uninit_slice_mut`.
         unsafe { slice::from_raw_parts_mut(self.cast().as_ptr(), self.len()) }

Diff for: std/src/io/error.rs

@@ -223,10 +223,10 @@ pub enum ErrorKind {
     #[stable(feature = "rust1", since = "1.0.0")]
     ConnectionReset,
     /// The remote host is not reachable.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     HostUnreachable,
     /// The network containing the remote host is not reachable.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     NetworkUnreachable,
     /// The connection was aborted (terminated) by the remote server.
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -243,7 +243,7 @@ pub enum ErrorKind {
     #[stable(feature = "rust1", since = "1.0.0")]
     AddrNotAvailable,
     /// The system's networking is down.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     NetworkDown,
     /// The operation failed because a pipe was closed.
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -259,18 +259,18 @@ pub enum ErrorKind {
     ///
     /// For example, a filesystem path was specified where one of the intermediate directory
     /// components was, in fact, a plain file.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     NotADirectory,
     /// The filesystem object is, unexpectedly, a directory.
     ///
     /// A directory was specified when a non-directory was expected.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     IsADirectory,
     /// A non-empty directory was specified where an empty directory was expected.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     DirectoryNotEmpty,
     /// The filesystem or storage medium is read-only, but a write operation was attempted.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     ReadOnlyFilesystem,
     /// Loop in the filesystem or IO subsystem; often, too many levels of symbolic links.
     ///
@@ -285,7 +285,7 @@ pub enum ErrorKind {
     ///
     /// With some network filesystems, notably NFS, an open file (or directory) can be invalidated
     /// by problems with the network or server.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     StaleNetworkFileHandle,
     /// A parameter was incorrect.
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -319,13 +319,13 @@ pub enum ErrorKind {
     /// The underlying storage (typically, a filesystem) is full.
     ///
     /// This does not include out of quota errors.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     StorageFull,
     /// Seek on unseekable file.
     ///
     /// Seeking was attempted on an open file handle which is not suitable for seeking - for
     /// example, on Unix, a named pipe opened with `File::open`.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     NotSeekable,
     /// Filesystem quota was exceeded.
     #[unstable(feature = "io_error_more", issue = "86442")]
@@ -335,30 +335,30 @@ pub enum ErrorKind {
     /// This might arise from a hard limit of the underlying filesystem or file access API, or from
     /// an administratively imposed resource limitation.  Simple disk full, and out of quota, have
     /// their own errors.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     FileTooLarge,
     /// Resource is busy.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     ResourceBusy,
     /// Executable file is busy.
     ///
     /// An attempt was made to write to a file which is also in use as a running program.  (Not all
     /// operating systems detect this situation.)
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     ExecutableFileBusy,
     /// Deadlock (avoided).
     ///
     /// A file locking operation would result in deadlock.  This situation is typically detected, if
     /// at all, on a best-effort basis.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     Deadlock,
     /// Cross-device or cross-filesystem (hard) link or rename.
     #[unstable(feature = "io_error_more", issue = "86442")]
     CrossesDevices,
     /// Too many (hard) links to the same filesystem object.
     ///
     /// The filesystem does not support making so many hardlinks to the same file.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     TooManyLinks,
     /// A filename was invalid.
     ///
@@ -369,7 +369,7 @@ pub enum ErrorKind {
     ///
     /// When trying to run an external program, a system or process limit on the size of the
     /// arguments would have been exceeded.
-    #[unstable(feature = "io_error_more", issue = "86442")]
+    #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")]
     ArgumentListTooLong,
     /// This operation was interrupted.
     ///

Diff for: std/src/sys/pal/unix/stack_overflow.rs

@@ -32,7 +32,8 @@ impl Drop for Handler {
     target_os = "macos",
     target_os = "netbsd",
     target_os = "openbsd",
-    target_os = "solaris"
+    target_os = "solaris",
+    target_os = "illumos",
 ))]
 mod imp {
     #[cfg(not(all(target_os = "linux", target_env = "gnu")))]
@@ -280,7 +281,7 @@ mod imp {
         libc::SIGSTKSZ
     }
 
-    #[cfg(target_os = "solaris")]
+    #[cfg(any(target_os = "solaris", target_os = "illumos"))]
     unsafe fn get_stack_start() -> Option<*mut libc::c_void> {
         let mut current_stack: libc::stack_t = crate::mem::zeroed();
         assert_eq!(libc::stack_getbounds(&mut current_stack), 0);
@@ -486,7 +487,12 @@ mod imp {
         Some(guardaddr..guardaddr + page_size)
     }
 
-    #[cfg(any(target_os = "macos", target_os = "openbsd", target_os = "solaris"))]
+    #[cfg(any(
+        target_os = "macos",
+        target_os = "openbsd",
+        target_os = "solaris",
+        target_os = "illumos",
+    ))]
     // FIXME: I am probably not unsafe.
     unsafe fn current_guard() -> Option<Range<usize>> {
         let stackptr = get_stack_start()?;
@@ -569,7 +575,8 @@ mod imp {
     target_os = "macos",
     target_os = "netbsd",
     target_os = "openbsd",
-    target_os = "solaris"
+    target_os = "solaris",
+    target_os = "illumos",
 )))]
 mod imp {
     pub unsafe fn init() {}