diff options
Diffstat (limited to 'library/std/src')
30 files changed, 270 insertions, 143 deletions
diff --git a/library/std/src/collections/hash/map.rs b/library/std/src/collections/hash/map.rs index f2e523dca77..ded4f404d78 100644 --- a/library/std/src/collections/hash/map.rs +++ b/library/std/src/collections/hash/map.rs @@ -1438,7 +1438,7 @@ impl<K, V> Clone for Iter<'_, K, V> { } } -#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "default_iters_hash", since = "1.83.0")] impl<K, V> Default for Iter<'_, K, V> { #[inline] fn default() -> Self { @@ -1484,7 +1484,7 @@ impl<'a, K, V> IterMut<'a, K, V> { } } -#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "default_iters_hash", since = "1.83.0")] impl<K, V> Default for IterMut<'_, K, V> { #[inline] fn default() -> Self { @@ -1522,7 +1522,7 @@ impl<K, V> IntoIter<K, V> { } } -#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "default_iters_hash", since = "1.83.0")] impl<K, V> Default for IntoIter<K, V> { #[inline] fn default() -> Self { @@ -1562,7 +1562,7 @@ impl<K, V> Clone for Keys<'_, K, V> { } } -#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "default_iters_hash", since = "1.83.0")] impl<K, V> Default for Keys<'_, K, V> { #[inline] fn default() -> Self { @@ -1609,7 +1609,7 @@ impl<K, V> Clone for Values<'_, K, V> { } } -#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "default_iters_hash", since = "1.83.0")] impl<K, V> Default for Values<'_, K, V> { #[inline] fn default() -> Self { @@ -1705,7 +1705,7 @@ pub struct ValuesMut<'a, K: 'a, V: 'a> { inner: IterMut<'a, K, V>, } -#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "default_iters_hash", since = "1.83.0")] impl<K, V> Default for ValuesMut<'_, K, V> { #[inline] fn default() -> Self { @@ -1735,7 +1735,7 @@ pub struct IntoKeys<K, V> { inner: IntoIter<K, V>, } -#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "default_iters_hash", since = "1.83.0")] impl<K, V> Default for IntoKeys<K, V> { #[inline] fn default() -> Self { @@ -1765,7 +1765,7 @@ pub struct IntoValues<K, V> { inner: IntoIter<K, V>, } -#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "default_iters_hash", since = "1.83.0")] impl<K, V> Default for IntoValues<K, V> { #[inline] fn default() -> Self { @@ -2865,7 +2865,7 @@ impl<'a, K, V> Entry<'a, K, V> { /// assert_eq!(entry.key(), &"poneyland"); /// ``` #[inline] - #[stable(feature = "entry_insert", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "entry_insert", since = "1.83.0")] pub fn insert_entry(self, value: V) -> OccupiedEntry<'a, K, V> { match self { Occupied(mut entry) => { @@ -3152,7 +3152,7 @@ impl<'a, K: 'a, V: 'a> VacantEntry<'a, K, V> { /// assert_eq!(map["poneyland"], 37); /// ``` #[inline] - #[stable(feature = "entry_insert", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "entry_insert", since = "1.83.0")] pub fn insert_entry(self, value: V) -> OccupiedEntry<'a, K, V> { let base = self.base.insert_entry(value); OccupiedEntry { base } diff --git a/library/std/src/collections/hash/set.rs b/library/std/src/collections/hash/set.rs index 210f5715225..e1e0eb36d23 100644 --- a/library/std/src/collections/hash/set.rs +++ b/library/std/src/collections/hash/set.rs @@ -1244,7 +1244,7 @@ pub struct Iter<'a, K: 'a> { base: base::Iter<'a, K>, } -#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "default_iters_hash", since = "1.83.0")] impl<K> Default for Iter<'_, K> { #[inline] fn default() -> Self { @@ -1273,7 +1273,7 @@ pub struct IntoIter<K> { base: base::IntoIter<K>, } -#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")] +#[stable(feature = "default_iters_hash", since = "1.83.0")] impl<K> Default for IntoIter<K> { #[inline] fn default() -> Self { diff --git a/library/std/src/f128.rs b/library/std/src/f128.rs index b436fe9929c..229f979b5b1 100644 --- a/library/std/src/f128.rs +++ b/library/std/src/f128.rs @@ -210,8 +210,9 @@ impl f128 { #[inline] #[rustc_allow_incoherent_impl] #[unstable(feature = "f128", issue = "116909")] + #[rustc_const_unstable(feature = "const_float_methods", issue = "130843")] #[must_use = "method returns a new number and does not mutate the original value"] - pub fn abs(self) -> Self { + pub const fn abs(self) -> Self { // FIXME(f16_f128): replace with `intrinsics::fabsf128` when available // We don't do this now because LLVM has lowering bugs for f128 math. Self::from_bits(self.to_bits() & !(1 << 127)) @@ -240,8 +241,9 @@ impl f128 { #[inline] #[rustc_allow_incoherent_impl] #[unstable(feature = "f128", issue = "116909")] + #[rustc_const_unstable(feature = "const_float_methods", issue = "130843")] #[must_use = "method returns a new number and does not mutate the original value"] - pub fn signum(self) -> f128 { + pub const fn signum(self) -> f128 { if self.is_nan() { Self::NAN } else { 1.0_f128.copysign(self) } } @@ -278,8 +280,9 @@ impl f128 { #[inline] #[rustc_allow_incoherent_impl] #[unstable(feature = "f128", issue = "116909")] + #[rustc_const_unstable(feature = "const_float_methods", issue = "130843")] #[must_use = "method returns a new number and does not mutate the original value"] - pub fn copysign(self, sign: f128) -> f128 { + pub const fn copysign(self, sign: f128) -> f128 { unsafe { intrinsics::copysignf128(self, sign) } } diff --git a/library/std/src/f16.rs b/library/std/src/f16.rs index b2cd5fae9d0..bed21cda1cd 100644 --- a/library/std/src/f16.rs +++ b/library/std/src/f16.rs @@ -210,8 +210,9 @@ impl f16 { #[inline] #[rustc_allow_incoherent_impl] #[unstable(feature = "f16", issue = "116909")] + #[rustc_const_unstable(feature = "const_float_methods", issue = "130843")] #[must_use = "method returns a new number and does not mutate the original value"] - pub fn abs(self) -> Self { + pub const fn abs(self) -> Self { // FIXME(f16_f128): replace with `intrinsics::fabsf16` when available Self::from_bits(self.to_bits() & !(1 << 15)) } @@ -239,8 +240,9 @@ impl f16 { #[inline] #[rustc_allow_incoherent_impl] #[unstable(feature = "f16", issue = "116909")] + #[rustc_const_unstable(feature = "const_float_methods", issue = "130843")] #[must_use = "method returns a new number and does not mutate the original value"] - pub fn signum(self) -> f16 { + pub const fn signum(self) -> f16 { if self.is_nan() { Self::NAN } else { 1.0_f16.copysign(self) } } @@ -277,8 +279,9 @@ impl f16 { #[inline] #[rustc_allow_incoherent_impl] #[unstable(feature = "f16", issue = "116909")] + #[rustc_const_unstable(feature = "const_float_methods", issue = "130843")] #[must_use = "method returns a new number and does not mutate the original value"] - pub fn copysign(self, sign: f16) -> f16 { + pub const fn copysign(self, sign: f16) -> f16 { unsafe { intrinsics::copysignf16(self, sign) } } diff --git a/library/std/src/f32.rs b/library/std/src/f32.rs index fa0b3ef6484..30cf4e1f756 100644 --- a/library/std/src/f32.rs +++ b/library/std/src/f32.rs @@ -194,8 +194,9 @@ impl f32 { #[rustc_allow_incoherent_impl] #[must_use = "method returns a new number and does not mutate the original value"] #[stable(feature = "rust1", since = "1.0.0")] + #[rustc_const_unstable(feature = "const_float_methods", issue = "130843")] #[inline] - pub fn abs(self) -> f32 { + pub const fn abs(self) -> f32 { unsafe { intrinsics::fabsf32(self) } } @@ -218,8 +219,9 @@ impl f32 { #[rustc_allow_incoherent_impl] #[must_use = "method returns a new number and does not mutate the original value"] #[stable(feature = "rust1", since = "1.0.0")] + #[rustc_const_unstable(feature = "const_float_methods", issue = "130843")] #[inline] - pub fn signum(self) -> f32 { + pub const fn signum(self) -> f32 { if self.is_nan() { Self::NAN } else { 1.0_f32.copysign(self) } } @@ -253,7 +255,8 @@ impl f32 { #[must_use = "method returns a new number and does not mutate the original value"] #[inline] #[stable(feature = "copysign", since = "1.35.0")] - pub fn copysign(self, sign: f32) -> f32 { + #[rustc_const_unstable(feature = "const_float_methods", issue = "130843")] + pub const fn copysign(self, sign: f32) -> f32 { unsafe { intrinsics::copysignf32(self, sign) } } diff --git a/library/std/src/f64.rs b/library/std/src/f64.rs index 9fa43a6742e..51d5476b372 100644 --- a/library/std/src/f64.rs +++ b/library/std/src/f64.rs @@ -194,8 +194,9 @@ impl f64 { #[rustc_allow_incoherent_impl] #[must_use = "method returns a new number and does not mutate the original value"] #[stable(feature = "rust1", since = "1.0.0")] + #[rustc_const_unstable(feature = "const_float_methods", issue = "130843")] #[inline] - pub fn abs(self) -> f64 { + pub const fn abs(self) -> f64 { unsafe { intrinsics::fabsf64(self) } } @@ -218,8 +219,9 @@ impl f64 { #[rustc_allow_incoherent_impl] #[must_use = "method returns a new number and does not mutate the original value"] #[stable(feature = "rust1", since = "1.0.0")] + #[rustc_const_unstable(feature = "const_float_methods", issue = "130843")] #[inline] - pub fn signum(self) -> f64 { + pub const fn signum(self) -> f64 { if self.is_nan() { Self::NAN } else { 1.0_f64.copysign(self) } } @@ -252,8 +254,9 @@ impl f64 { #[rustc_allow_incoherent_impl] #[must_use = "method returns a new number and does not mutate the original value"] #[stable(feature = "copysign", since = "1.35.0")] + #[rustc_const_unstable(feature = "const_float_methods", issue = "130843")] #[inline] - pub fn copysign(self, sign: f64) -> f64 { + pub const fn copysign(self, sign: f64) -> f64 { unsafe { intrinsics::copysignf64(self, sign) } } diff --git a/library/std/src/fs.rs b/library/std/src/fs.rs index 124ef121b18..675140ff18f 100644 --- a/library/std/src/fs.rs +++ b/library/std/src/fs.rs @@ -394,7 +394,8 @@ impl File { /// /// # Errors /// - /// This function will return an error if `path` does not already exist. + /// This function will return an error if `path` does not already exist, + /// or if memory allocation fails for the new buffer. /// Other errors may also be returned according to [`OpenOptions::open`]. /// /// # Examples diff --git a/library/std/src/io/error.rs b/library/std/src/io/error.rs index f20814dd95c..adf103e9430 100644 --- a/library/std/src/io/error.rs +++ b/library/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. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] HostUnreachable, /// The network containing the remote host is not reachable. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] 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. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] 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. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] NotADirectory, /// The filesystem object is, unexpectedly, a directory. /// /// A directory was specified when a non-directory was expected. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] IsADirectory, /// A non-empty directory was specified where an empty directory was expected. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] DirectoryNotEmpty, /// The filesystem or storage medium is read-only, but a write operation was attempted. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] 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. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] 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. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] 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`. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] NotSeekable, /// Filesystem quota was exceeded. #[unstable(feature = "io_error_more", issue = "86442")] @@ -335,22 +335,22 @@ 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. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] FileTooLarge, /// Resource is busy. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] 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.) - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] ExecutableFileBusy, /// Deadlock (avoided). /// /// A file locking operation would result in deadlock. This situation is typically detected, if /// at all, on a best-effort basis. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] Deadlock, /// Cross-device or cross-filesystem (hard) link or rename. #[unstable(feature = "io_error_more", issue = "86442")] @@ -358,7 +358,7 @@ pub enum ErrorKind { /// Too many (hard) links to the same filesystem object. /// /// The filesystem does not support making so many hardlinks to the same file. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] 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. - #[stable(feature = "io_error_a_bit_more", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "io_error_a_bit_more", since = "1.83.0")] ArgumentListTooLong, /// This operation was interrupted. /// diff --git a/library/std/src/io/mod.rs b/library/std/src/io/mod.rs index 8fedcb241d0..71dfd0676c9 100644 --- a/library/std/src/io/mod.rs +++ b/library/std/src/io/mod.rs @@ -2405,7 +2405,7 @@ pub trait BufRead: Read { /// assert_eq!(num_bytes, 11); /// assert_eq!(animal, b"Crustacean\0"); /// ``` - #[stable(feature = "bufread_skip_until", since = "CURRENT_RUSTC_VERSION")] + #[stable(feature = "bufread_skip_until", since = "1.83.0")] fn skip_until(&mut self, byte: u8) -> Result<usize> { skip_until(self, byte) } diff --git a/library/std/src/io/stdio.rs b/library/std/src/io/stdio.rs index bf242e715bd..35b38ed783f 100644 --- a/library/std/src/io/stdio.rs +++ b/library/std/src/io/stdio.rs @@ -370,7 +370,12 @@ impl Stdin { /// Locks this handle and reads a line of input, appending it to the specified buffer. /// /// For detailed semantics of this method, see the documentation on - /// [`BufRead::read_line`]. + /// [`BufRead::read_line`]. In particular: + /// * Previous content of the buffer will be preserved. To avoid appending + /// to the buffer, you need to [`clear`] it first. + /// * The trailing newline character, if any, is included in the buffer. + /// + /// [`clear`]: String::clear /// /// # Examples /// diff --git a/library/std/src/keyword_docs.rs b/library/std/src/keyword_docs.rs index 9f4d244b547..453b2708daa 100644 --- a/library/std/src/keyword_docs.rs +++ b/library/std/src/keyword_docs.rs @@ -2349,12 +2349,13 @@ mod async_keyword {} /// [`async`]: ../std/keyword.async.html mod await_keyword {} +// FIXME(dyn_compat_renaming): Update URL and link text. #[doc(keyword = "dyn")] // /// `dyn` is a prefix of a [trait object]'s type. /// /// The `dyn` keyword is used to highlight that calls to methods on the associated `Trait` -/// are [dynamically dispatched]. To use the trait this way, it must be 'object safe'. +/// are [dynamically dispatched]. To use the trait this way, it must be 'dyn-compatible'[^1]. /// /// Unlike generic parameters or `impl Trait`, the compiler does not know the concrete type that /// is being passed. That is, the type has been [erased]. @@ -2382,6 +2383,7 @@ mod await_keyword {} /// [ref-trait-obj]: ../reference/types/trait-object.html /// [ref-obj-safety]: ../reference/items/traits.html#object-safety /// [erased]: https://en.wikipedia.org/wiki/Type_erasure +/// [^1]: Formerly known as 'object safe'. mod dyn_keyword {} #[doc(keyword = "union")] diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs index 65a9aa66c7c..3ab65238368 100644 --- a/library/std/src/lib.rs +++ b/library/std/src/lib.rs @@ -267,6 +267,7 @@ #![allow(unused_features)] // // Features: +#![cfg_attr(not(bootstrap), feature(autodiff))] #![cfg_attr(test, feature(internal_output_capture, print_internals, update_panic_count, rt))] #![cfg_attr( all(target_vendor = "fortanix", target_env = "sgx"), @@ -278,7 +279,6 @@ // // Language features: // tidy-alphabetical-start -#![cfg_attr(bootstrap, feature(const_mut_refs))] #![feature(alloc_error_handler)] #![feature(allocator_internals)] #![feature(allow_internal_unsafe)] @@ -288,6 +288,7 @@ #![feature(cfg_target_thread_local)] #![feature(cfi_encoding)] #![feature(concat_idents)] +#![feature(const_float_methods)] #![feature(decl_macro)] #![feature(deprecated_suggestion)] #![feature(doc_cfg)] @@ -414,9 +415,6 @@ // tidy-alphabetical-start #![feature(const_collections_with_hasher)] #![feature(const_hash)] -#![feature(const_ip)] -#![feature(const_ipv4)] -#![feature(const_ipv6)] #![feature(thread_local_internals)] // tidy-alphabetical-end // @@ -627,7 +625,13 @@ pub mod simd { #[doc(inline)] pub use crate::std_float::StdFloat; } - +#[cfg(not(bootstrap))] +#[unstable(feature = "autodiff", issue = "124509")] +/// This module provides support for automatic differentiation. +pub mod autodiff { + /// This macro handles automatic differentiation. + pub use core::autodiff::autodiff; +} #[stable(feature = "futures_api", since = "1.36.0")] pub mod task { //! Types and Traits for working with asynchronous tasks. diff --git a/library/std/src/os/wasi/mod.rs b/library/std/src/os/wasi/mod.rs index 33b50c9e53b..2ee6aa46600 100644 --- a/library/std/src/os/wasi/mod.rs +++ b/library/std/src/os/wasi/mod.rs @@ -36,6 +36,8 @@ pub mod ffi; pub mod fs; pub mod io; + +#[cfg(all(target_os = "wasi", target_env = "p1"))] pub mod net; /// A prelude for conveniently writing platform-specific code. diff --git a/library/std/src/rt.rs b/library/std/src/rt.rs index 0a841f07e3b..80e7c3c026b 100644 --- a/library/std/src/rt.rs +++ b/library/std/src/rt.rs @@ -102,9 +102,24 @@ unsafe fn init(argc: isize, argv: *const *const u8, sigpipe: u8) { sys::init(argc, argv, sigpipe) }; - // Set up the current thread to give it the right name. - let thread = Thread::new_main(); - thread::set_current(thread); + // Set up the current thread handle to give it the right name. + // + // When code running before main uses `ReentrantLock` (for example by + // using `println!`), the thread ID can become initialized before we + // create this handle. Since `set_current` fails when the ID of the + // handle does not match the current ID, we should attempt to use the + // current thread ID here instead of unconditionally creating a new + // one. Also see #130210. + let thread = Thread::new_main(thread::current_id()); + if let Err(_thread) = thread::set_current(thread) { + // `thread::current` will create a new handle if none has been set yet. + // Thus, if someone uses it before main, this call will fail. That's a + // bad idea though, as we then cannot set the main thread name here. + // + // FIXME: detect the main thread in `thread::current` and use the + // correct name there. + rtabort!("code running before main must not use thread::current"); + } } /// Clean up the thread-local runtime state. This *should* be run after all other diff --git a/library/std/src/sys/pal/sgx/net.rs b/library/std/src/sys/pal/sgx/net.rs index 44913ffe3a9..c966886d163 100644 --- a/library/std/src/sys/pal/sgx/net.rs +++ b/library/std/src/sys/pal/sgx/net.rs @@ -78,9 +78,8 @@ fn io_err_to_addr(result: io::Result<&SocketAddr>) -> io::Result<String> { } } -fn addr_to_sockaddr(addr: &Option<String>) -> io::Result<SocketAddr> { - addr.as_ref() - .ok_or(io::ErrorKind::AddrNotAvailable)? +fn addr_to_sockaddr(addr: Option<&str>) -> io::Result<SocketAddr> { + addr.ok_or(io::ErrorKind::AddrNotAvailable)? .to_socket_addrs() // unwrap OK: if an iterator is returned, we're guaranteed to get exactly one entry .map(|mut it| it.next().unwrap()) @@ -161,11 +160,11 @@ impl TcpStream { } pub fn peer_addr(&self) -> io::Result<SocketAddr> { - addr_to_sockaddr(&self.peer_addr) + addr_to_sockaddr(self.peer_addr.as_deref()) } pub fn socket_addr(&self) -> io::Result<SocketAddr> { - addr_to_sockaddr(&self.inner.local_addr) + addr_to_sockaddr(self.inner.local_addr.as_deref()) } pub fn shutdown(&self, _: Shutdown) -> io::Result<()> { @@ -255,13 +254,14 @@ impl TcpListener { } pub fn socket_addr(&self) -> io::Result<SocketAddr> { - addr_to_sockaddr(&self.inner.local_addr) + addr_to_sockaddr(self.inner.local_addr.as_deref()) } pub fn accept(&self) -> io::Result<(TcpStream, SocketAddr)> { let (fd, local_addr, peer_addr) = usercalls::accept_stream(self.inner.inner.raw())?; let peer_addr = Some(peer_addr); - let ret_peer = addr_to_sockaddr(&peer_addr).unwrap_or_else(|_| ([0; 4], 0).into()); + let ret_peer = + addr_to_sockaddr(peer_addr.as_deref()).unwrap_or_else(|_| ([0; 4], 0).into()); Ok((TcpStream { inner: Socket::new(fd, local_addr), peer_addr }, ret_peer)) } diff --git a/library/std/src/sys/pal/uefi/helpers.rs b/library/std/src/sys/pal/uefi/helpers.rs index bd8a6684b64..4ced7065c82 100644 --- a/library/std/src/sys/pal/uefi/helpers.rs +++ b/library/std/src/sys/pal/uefi/helpers.rs @@ -177,16 +177,8 @@ pub(crate) fn device_path_to_text(path: NonNull<device_path::Protocol>) -> io::R ) }; - // SAFETY: `convert_device_path_to_text` returns a pointer to a null-terminated UTF-16 - // string, and that string cannot be deallocated prior to dropping the `WStrUnits`, so - // it's safe for `WStrUnits` to use. - let path_len = unsafe { - WStrUnits::new(path_ptr) - .ok_or(io::const_io_error!(io::ErrorKind::InvalidData, "Invalid path"))? - .count() - }; - - let path = OsString::from_wide(unsafe { slice::from_raw_parts(path_ptr.cast(), path_len) }); + let path = os_string_from_raw(path_ptr) + .ok_or(io::const_io_error!(io::ErrorKind::InvalidData, "Invalid path"))?; if let Some(boot_services) = crate::os::uefi::env::boot_services() { let boot_services: NonNull<r_efi::efi::BootServices> = boot_services.cast(); @@ -420,3 +412,15 @@ impl<T> Drop for OwnedTable<T> { unsafe { crate::alloc::dealloc(self.ptr as *mut u8, self.layout) }; } } + +/// Create OsString from a pointer to NULL terminated UTF-16 string +pub(crate) fn os_string_from_raw(ptr: *mut r_efi::efi::Char16) -> Option<OsString> { + let path_len = unsafe { WStrUnits::new(ptr)?.count() }; + Some(OsString::from_wide(unsafe { slice::from_raw_parts(ptr.cast(), path_len) })) +} + +/// Create NULL terminated UTF-16 string +pub(crate) fn os_string_to_raw(s: &OsStr) -> Option<Box<[r_efi::efi::Char16]>> { + let temp = s.encode_wide().chain(Some(0)).collect::<Box<[r_efi::efi::Char16]>>(); + if temp[..temp.len() - 1].contains(&0) { None } else { Some(temp) } +} diff --git a/library/std/src/sys/pal/uefi/os.rs b/library/std/src/sys/pal/uefi/os.rs index 9aee67d622f..4eb7698b43a 100644 --- a/library/std/src/sys/pal/uefi/os.rs +++ b/library/std/src/sys/pal/uefi/os.rs @@ -1,7 +1,7 @@ use r_efi::efi::Status; use r_efi::efi::protocols::{device_path, loaded_image_device_path}; -use super::{RawOsError, helpers, unsupported}; +use super::{RawOsError, helpers, unsupported_err}; use crate::error::Error as StdError; use crate::ffi::{OsStr, OsString}; use crate::marker::PhantomData; @@ -125,11 +125,32 @@ pub fn error_string(errno: RawOsError) -> String { } pub fn getcwd() -> io::Result<PathBuf> { - unsupported() + match uefi_shell::open_shell() { + Some(shell) => { + // SAFETY: path_ptr is managed by UEFI shell and should not be deallocated + let path_ptr = unsafe { ((*shell.as_ptr()).get_cur_dir)(crate::ptr::null_mut()) }; + helpers::os_string_from_raw(path_ptr) + .map(PathBuf::from) + .ok_or(io::const_io_error!(io::ErrorKind::InvalidData, "Invalid path")) + } + None => { + let mut t = current_exe()?; + // SAFETY: This should never fail since the disk prefix will be present even for root + // executables + assert!(t.pop()); + Ok(t) + } + } } -pub fn chdir(_: &path::Path) -> io::Result<()> { - unsupported() +pub fn chdir(p: &path::Path) -> io::Result<()> { + let shell = uefi_shell::open_shell().ok_or(unsupported_err())?; + + let mut p = helpers::os_string_to_raw(p.as_os_str()) + .ok_or(io::const_io_error!(io::ErrorKind::InvalidData, "Invalid path"))?; + + let r = unsafe { ((*shell.as_ptr()).set_cur_dir)(crate::ptr::null_mut(), p.as_mut_ptr()) }; + if r.is_error() { Err(io::Error::from_raw_os_error(r.as_usize())) } else { Ok(()) } } pub struct SplitPaths<'a>(!, PhantomData<&'a ()>); @@ -239,3 +260,37 @@ pub fn exit(code: i32) -> ! { pub fn getpid() -> u32 { panic!("no pids on this platform") } + +mod uefi_shell { + use r_efi::protocols::shell; + + use super::super::helpers; + use crate::ptr::NonNull; + use crate::sync::atomic::{AtomicPtr, Ordering}; + + pub fn open_shell() -> Option<NonNull<shell::Protocol>> { + static LAST_VALID_HANDLE: AtomicPtr<crate::ffi::c_void> = + AtomicPtr::new(crate::ptr::null_mut()); + + if let Some(handle) = NonNull::new(LAST_VALID_HANDLE.load(Ordering::Acquire)) { + if let Ok(protocol) = helpers::open_protocol::<shell::Protocol>( + handle, + r_efi::protocols::shell::PROTOCOL_GUID, + ) { + return Some(protocol); + } + } + + let handles = helpers::locate_handles(shell::PROTOCOL_GUID).ok()?; + for handle in handles { + if let Ok(protocol) = + helpers::open_protocol::<shell::Protocol>(handle, shell::PROTOCOL_GUID) + { + LAST_VALID_HANDLE.store(handle.as_ptr(), Ordering::Release); + return Some(protocol); + } + } + + None + } +} diff --git a/library/std/src/sys/pal/unix/fs.rs b/library/std/src/sys/pal/unix/fs.rs index 39aabf0b2d6..567577b2b4d 100644 --- a/library/std/src/sys/pal/unix/fs.rs +++ b/library/std/src/sys/pal/unix/fs.rs @@ -899,7 +899,7 @@ impl DirEntry { target_os = "android", target_os = "hurd" ), - not(miri) + not(miri) // no dirfd on Miri ))] pub fn metadata(&self) -> io::Result<FileAttr> { let fd = cvt(unsafe { dirfd(self.dir.dirp.0) })?; @@ -1538,7 +1538,7 @@ impl fmt::Debug for File { Some(PathBuf::from(OsString::from_vec(buf))) } - #[cfg(all(target_os = "freebsd", target_arch = "x86_64"))] + #[cfg(target_os = "freebsd")] fn get_path(fd: c_int) -> Option<PathBuf> { let info = Box::<libc::kinfo_file>::new_zeroed(); let mut info = unsafe { info.assume_init() }; @@ -1566,7 +1566,7 @@ impl fmt::Debug for File { #[cfg(not(any( target_os = "linux", target_os = "vxworks", - all(target_os = "freebsd", target_arch = "x86_64"), + target_os = "freebsd", target_os = "netbsd", target_os = "illumos", target_os = "solaris", diff --git a/library/std/src/sys/pal/unix/process/process_common.rs b/library/std/src/sys/pal/unix/process/process_common.rs index d9c41d43487..13290fed762 100644 --- a/library/std/src/sys/pal/unix/process/process_common.rs +++ b/library/std/src/sys/pal/unix/process/process_common.rs @@ -312,8 +312,8 @@ impl Command { } #[allow(dead_code)] - pub fn get_cwd(&self) -> &Option<CString> { - &self.cwd + pub fn get_cwd(&self) -> Option<&CStr> { + self.cwd.as_deref() } #[allow(dead_code)] pub fn get_uid(&self) -> Option<uid_t> { diff --git a/library/std/src/sys/pal/unix/process/process_unix.rs b/library/std/src/sys/pal/unix/process/process_unix.rs index 5d30f388da1..4551d49e841 100644 --- a/library/std/src/sys/pal/unix/process/process_unix.rs +++ b/library/std/src/sys/pal/unix/process/process_unix.rs @@ -335,7 +335,7 @@ impl Command { cvt(libc::setuid(u as uid_t))?; } } - if let Some(ref cwd) = *self.get_cwd() { + if let Some(cwd) = self.get_cwd() { cvt(libc::chdir(cwd.as_ptr()))?; } diff --git a/library/std/src/sys/pal/unix/process/process_vxworks.rs b/library/std/src/sys/pal/unix/process/process_vxworks.rs index 2d9a304c495..38daf6af918 100644 --- a/library/std/src/sys/pal/unix/process/process_vxworks.rs +++ b/library/std/src/sys/pal/unix/process/process_vxworks.rs @@ -57,7 +57,7 @@ impl Command { t!(cvt_r(|| libc::dup2(fd, libc::STDERR_FILENO))); } - if let Some(ref cwd) = *self.get_cwd() { + if let Some(cwd) = self.get_cwd() { t!(cvt(libc::chdir(cwd.as_ptr()))); } diff --git a/library/std/src/sys/pal/wasip2/net.rs b/library/std/src/sys/pal/wasip2/net.rs index c40eb229ba9..06e623df843 100644 --- a/library/std/src/sys/pal/wasip2/net.rs +++ b/library/std/src/sys/pal/wasip2/net.rs @@ -2,13 +2,12 @@ use libc::{c_int, c_void, size_t}; -use super::fd::WasiFd; use crate::ffi::CStr; use crate::io::{self, BorrowedBuf, BorrowedCursor, IoSlice, IoSliceMut}; use crate::net::{Shutdown, SocketAddr}; -use crate::os::wasi::io::{AsFd, AsRawFd, BorrowedFd, FromRawFd, IntoRawFd, RawFd}; +use crate::os::wasi::io::{AsFd, AsRawFd, BorrowedFd, FromRawFd, IntoRawFd, OwnedFd, RawFd}; use crate::sys::unsupported; -use crate::sys_common::net::{TcpListener, getsockopt, setsockopt, sockaddr_to_addr}; +use crate::sys_common::net::{getsockopt, setsockopt, sockaddr_to_addr}; use crate::sys_common::{AsInner, FromInner, IntoInner}; use crate::time::{Duration, Instant}; use crate::{cmp, mem, str}; @@ -71,7 +70,9 @@ pub fn cvt_gai(err: c_int) -> io::Result<()> { pub fn init() {} -pub struct Socket(WasiFd); +pub struct WasiSocket(OwnedFd); + +pub struct Socket(WasiSocket); impl Socket { pub fn new(addr: &SocketAddr, ty: c_int) -> io::Result<Socket> { @@ -327,53 +328,90 @@ impl Socket { } } -impl AsInner<WasiFd> for Socket { +impl AsInner<OwnedFd> for WasiSocket { #[inline] - fn as_inner(&self) -> &WasiFd { + fn as_inner(&self) -> &OwnedFd { &self.0 } } -impl IntoInner<WasiFd> for Socket { - fn into_inner(self) -> WasiFd { +impl IntoInner<OwnedFd> for WasiSocket { + fn into_inner(self) -> OwnedFd { self.0 } } -impl FromInner<WasiFd> for Socket { - fn from_inner(inner: WasiFd) -> Socket { - Socket(inner) +impl FromInner<OwnedFd> for WasiSocket { + fn from_inner(owned_fd: OwnedFd) -> Self { + Self(owned_fd) } } -impl AsFd for Socket { +impl AsFd for WasiSocket { fn as_fd(&self) -> BorrowedFd<'_> { self.0.as_fd() } } -impl AsRawFd for Socket { +impl AsRawFd for WasiSocket { #[inline] fn as_raw_fd(&self) -> RawFd { self.0.as_raw_fd() } } -impl IntoRawFd for Socket { +impl IntoRawFd for WasiSocket { fn into_raw_fd(self) -> RawFd { self.0.into_raw_fd() } } -impl FromRawFd for Socket { +impl FromRawFd for WasiSocket { unsafe fn from_raw_fd(raw_fd: RawFd) -> Self { unsafe { Self(FromRawFd::from_raw_fd(raw_fd)) } } } -impl AsInner<Socket> for TcpListener { +impl AsInner<WasiSocket> for Socket { + #[inline] + fn as_inner(&self) -> &WasiSocket { + &self.0 + } +} + +impl IntoInner<WasiSocket> for Socket { + fn into_inner(self) -> WasiSocket { + self.0 + } +} + +impl FromInner<WasiSocket> for Socket { + fn from_inner(sock: WasiSocket) -> Socket { + Socket(sock) + } +} + +impl AsFd for Socket { + fn as_fd(&self) -> BorrowedFd<'_> { + self.0.as_fd() + } +} + +impl AsRawFd for Socket { #[inline] - fn as_inner(&self) -> &Socket { - &self.socket() + fn as_raw_fd(&self) -> RawFd { + self.0.as_raw_fd() + } +} + +impl IntoRawFd for Socket { + fn into_raw_fd(self) -> RawFd { + self.0.into_raw_fd() + } +} + +impl FromRawFd for Socket { + unsafe fn from_raw_fd(raw_fd: RawFd) -> Self { + unsafe { Self(FromRawFd::from_raw_fd(raw_fd)) } } } diff --git a/library/std/src/sys/pal/windows/args.rs b/library/std/src/sys/pal/windows/args.rs index 848632ec2a7..e9fc19bcb99 100644 --- a/library/std/src/sys/pal/windows/args.rs +++ b/library/std/src/sys/pal/windows/args.rs @@ -18,17 +18,6 @@ use crate::sys_common::AsInner; use crate::sys_common::wstr::WStrUnits; use crate::{fmt, io, iter, vec}; -/// This is the const equivalent to `NonZero::new(n).unwrap()` -/// -/// FIXME(const-hack): This can be removed once `Option::unwrap` is stably const. -/// See the `const_option` feature (#67441). -const fn non_zero_u16(n: u16) -> NonZero<u16> { - match NonZero::new(n) { - Some(n) => n, - None => panic!("called `unwrap` on a `None` value"), - } -} - pub fn args() -> Args { // SAFETY: `GetCommandLineW` returns a pointer to a null terminated UTF-16 // string so it's safe for `WStrUnits` to use. @@ -66,10 +55,10 @@ fn parse_lp_cmd_line<'a, F: Fn() -> OsString>( lp_cmd_line: Option<WStrUnits<'a>>, exe_name: F, ) -> Vec<OsString> { - const BACKSLASH: NonZero<u16> = non_zero_u16(b'\\' as u16); - const QUOTE: NonZero<u16> = non_zero_u16(b'"' as u16); - const TAB: NonZero<u16> = non_zero_u16(b'\t' as u16); - const SPACE: NonZero<u16> = non_zero_u16(b' ' as u16); + const BACKSLASH: NonZero<u16> = NonZero::new(b'\\' as u16).unwrap(); + const QUOTE: NonZero<u16> = NonZero::new(b'"' as u16).unwrap(); + const TAB: NonZero<u16> = NonZero::new(b'\t' as u16).unwrap(); + const SPACE: NonZero<u16> = NonZero::new(b' ' as u16).unwrap(); let mut ret_val = Vec::new(); // If the cmd line pointer is null or it points to an empty string then diff --git a/library/std/src/sys/pal/windows/c.rs b/library/std/src/sys/pal/windows/c.rs index b65ad7dbe8c..9ce3e912caf 100644 --- a/library/std/src/sys/pal/windows/c.rs +++ b/library/std/src/sys/pal/windows/c.rs @@ -175,9 +175,9 @@ extern "system" { pub fn WakeByAddressAll(address: *const c_void); } +// These are loaded by `load_synch_functions`. #[cfg(target_vendor = "win7")] compat_fn_optional! { - crate::sys::compat::load_synch_functions(); pub fn WaitOnAddress( address: *const c_void, compareaddress: *const c_void, diff --git a/library/std/src/sys/pal/windows/compat.rs b/library/std/src/sys/pal/windows/compat.rs index c8e25dd0c94..42999da1664 100644 --- a/library/std/src/sys/pal/windows/compat.rs +++ b/library/std/src/sys/pal/windows/compat.rs @@ -198,11 +198,10 @@ macro_rules! compat_fn_with_fallback { /// Optionally loaded functions. /// -/// Actual loading of the function defers to $load_functions. +/// Relies on the functions being pre-loaded elsewhere. #[cfg(target_vendor = "win7")] macro_rules! compat_fn_optional { - ($load_functions:expr; - $( + ($( $(#[$meta:meta])* $vis:vis fn $symbol:ident($($argname:ident: $argtype:ty),*) $(-> $rettype:ty)?; )+) => ( @@ -221,9 +220,6 @@ macro_rules! compat_fn_optional { #[inline(always)] pub fn option() -> Option<F> { - // Miri does not understand the way we do preloading - // therefore load the function here instead. - #[cfg(miri)] $load_functions; NonNull::new(PTR.load(Ordering::Relaxed)).map(|f| unsafe { mem::transmute(f) }) } } diff --git a/library/std/src/sys/pal/windows/mod.rs b/library/std/src/sys/pal/windows/mod.rs index 1ea253e5e52..a9886012e8e 100644 --- a/library/std/src/sys/pal/windows/mod.rs +++ b/library/std/src/sys/pal/windows/mod.rs @@ -346,7 +346,6 @@ pub fn abort_internal() -> ! { } } -// miri is sensitive to changes here so check that miri is happy if touching this #[cfg(miri)] pub fn abort_internal() -> ! { crate::intrinsics::abort(); diff --git a/library/std/src/sys/sync/once_box.rs b/library/std/src/sys/sync/once_box.rs index 1422b5a1721..9d24db2245a 100644 --- a/library/std/src/sys/sync/once_box.rs +++ b/library/std/src/sys/sync/once_box.rs @@ -8,7 +8,7 @@ use crate::mem::replace; use crate::ptr::null_mut; use crate::sync::atomic::AtomicPtr; -use crate::sync::atomic::Ordering::{AcqRel, Acquire, Relaxed}; +use crate::sync::atomic::Ordering::{Acquire, Relaxed, Release}; pub(crate) struct OnceBox<T> { ptr: AtomicPtr<T>, @@ -60,7 +60,7 @@ impl<T> OnceBox<T> { #[cold] fn initialize(&self, f: impl FnOnce() -> Box<T>) -> &T { let new_ptr = Box::into_raw(f()); - match self.ptr.compare_exchange(null_mut(), new_ptr, AcqRel, Acquire) { + match self.ptr.compare_exchange(null_mut(), new_ptr, Release, Acquire) { Ok(_) => unsafe { &*new_ptr }, Err(ptr) => { // Lost the race to another thread. diff --git a/library/std/src/sys/sync/thread_parking/mod.rs b/library/std/src/sys/sync/thread_parking/mod.rs index 0ebc5e093ee..f4d8fa0a58c 100644 --- a/library/std/src/sys/sync/thread_parking/mod.rs +++ b/library/std/src/sys/sync/thread_parking/mod.rs @@ -23,6 +23,7 @@ cfg_if::cfg_if! { mod windows7; pub use windows7::Parker; } else if #[cfg(all(target_vendor = "apple", not(miri)))] { + // Doesn't work in Miri, see <https://github.com/rust-lang/miri/issues/2589>. mod darwin; pub use darwin::Parker; } else if #[cfg(target_os = "xous")] { diff --git a/library/std/src/thread/current.rs b/library/std/src/thread/current.rs index b38149a0da7..e6eb90c4c30 100644 --- a/library/std/src/thread/current.rs +++ b/library/std/src/thread/current.rs @@ -110,22 +110,24 @@ mod id { } } -/// Sets the thread handle for the current thread. -/// -/// Aborts if the handle or the ID has been set already. -pub(crate) fn set_current(thread: Thread) { - if CURRENT.get() != NONE || id::get().is_some() { - // Using `panic` here can add ~3kB to the binary size. We have complete - // control over where this is called, so just abort if there is a bug. - rtabort!("thread::set_current should only be called once per thread"); +/// Tries to set the thread handle for the current thread. Fails if a handle was +/// already set or if the thread ID of `thread` would change an already-set ID. +pub(crate) fn set_current(thread: Thread) -> Result<(), Thread> { + if CURRENT.get() != NONE { + return Err(thread); } - id::set(thread.id()); + match id::get() { + Some(id) if id == thread.id() => {} + None => id::set(thread.id()), + _ => return Err(thread), + } // Make sure that `crate::rt::thread_cleanup` will be run, which will // call `drop_current`. crate::sys::thread_local::guard::enable(); CURRENT.set(thread.into_raw().cast_mut()); + Ok(()) } /// Gets the id of the thread that invokes it. diff --git a/library/std/src/thread/mod.rs b/library/std/src/thread/mod.rs index d1d4eabb9bd..39753888509 100644 --- a/library/std/src/thread/mod.rs +++ b/library/std/src/thread/mod.rs @@ -519,9 +519,14 @@ impl Builder { let f = MaybeDangling::new(f); let main = move || { - // Immediately store the thread handle to avoid setting it or its ID - // twice, which would cause an abort. - set_current(their_thread.clone()); + if let Err(_thread) = set_current(their_thread.clone()) { + // Both the current thread handle and the ID should not be + // initialized yet. Since only the C runtime and some of our + // platform code run before this, this point shouldn't be + // reachable. Use an abort to save binary size (see #123356). + rtabort!("something here is badly broken!"); + } + if let Some(name) = their_thread.cname() { imp::Thread::set_name(name); } @@ -1159,9 +1164,6 @@ pub fn park_timeout(dur: Duration) { pub struct ThreadId(NonZero<u64>); impl ThreadId { - // DO NOT rely on this value. - const MAIN_THREAD: ThreadId = ThreadId(unsafe { NonZero::new_unchecked(1) }); - // Generate a new unique thread ID. pub(crate) fn new() -> ThreadId { #[cold] @@ -1173,7 +1175,7 @@ impl ThreadId { if #[cfg(target_has_atomic = "64")] { use crate::sync::atomic::AtomicU64; - static COUNTER: AtomicU64 = AtomicU64::new(1); + static COUNTER: AtomicU64 = AtomicU64::new(0); let mut last = COUNTER.load(Ordering::Relaxed); loop { @@ -1189,7 +1191,7 @@ impl ThreadId { } else { use crate::sync::{Mutex, PoisonError}; - static COUNTER: Mutex<u64> = Mutex::new(1); + static COUNTER: Mutex<u64> = Mutex::new(0); let mut counter = COUNTER.lock().unwrap_or_else(PoisonError::into_inner); let Some(id) = counter.checked_add(1) else { @@ -1326,9 +1328,9 @@ impl Thread { Self::new_inner(id, ThreadName::Unnamed) } - // Used in runtime to construct main thread - pub(crate) fn new_main() -> Thread { - Self::new_inner(ThreadId::MAIN_THREAD, ThreadName::Main) + /// Constructs the thread handle for the main thread. + pub(crate) fn new_main(id: ThreadId) -> Thread { + Self::new_inner(id, ThreadName::Main) } fn new_inner(id: ThreadId, name: ThreadName) -> Thread { |