rust-lang
diff --git a/‎Cargo.lock
+20-33 b/‎Cargo.lock
+20-33
diff --git a/‎README.md
+24-15 b/‎README.md
+24-15
diff --git a/‎RELEASES.md
+10 b/‎RELEASES.md
+10
diff --git a/‎compiler/rustc_abi/src/lib.rs
+4-3 b/‎compiler/rustc_abi/src/lib.rs
+4-3
diff --git a/‎compiler/rustc_ast/src/ast.rs
+18-14 b/‎compiler/rustc_ast/src/ast.rs
+18-14
diff --git a/‎compiler/rustc_ast/src/ptr.rs
+7-9 b/‎compiler/rustc_ast/src/ptr.rs
+7-9
diff --git a/‎compiler/rustc_ast/src/token.rs
+1-1 b/‎compiler/rustc_ast/src/token.rs
+1-1
diff --git a/‎compiler/rustc_ast/src/tokenstream.rs
+1-1 b/‎compiler/rustc_ast/src/tokenstream.rs
+1-1
diff --git a/‎compiler/rustc_ast/src/util/parser.rs
+5-2 b/‎compiler/rustc_ast/src/util/parser.rs
+5-2
@@ -593,7 +593,6 @@ dependencies = [
  "syn 2.0.55",
  "tempfile",
  "termize",
- "tester",
  "tokio",
  "toml 0.7.8",
  "ui_test 0.22.2",
@@ -2590,6 +2589,15 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "nu-ansi-term"
+version = "0.49.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c073d3c1930d0751774acf49e66653acecb416c3a54c6ec095a9b11caddb5a68"
+dependencies = [
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "num-conv"
 version = "0.1.0"
@@ -3560,6 +3568,7 @@ dependencies = [
 name = "rustc_attr"
 version = "0.0.0"
 dependencies = [
+ "rustc_abi",
  "rustc_ast",
  "rustc_ast_pretty",
  "rustc_data_structures",
@@ -4773,6 +4782,8 @@ version = "0.0.0"
 dependencies = [
  "arrayvec",
  "askama",
+ "base64",
+ "byteorder",
  "expect-test",
  "indexmap",
  "itertools 0.12.1",
@@ -5358,9 +5369,9 @@ dependencies = [
 
 [[package]]
 name = "sysinfo"
-version = "0.30.7"
+version = "0.30.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c385888ef380a852a16209afc8cfad22795dd8873d69c9a14d2e2088f118d18"
+checksum = "4b1a378e48fb3ce3a5cf04359c456c9c98ff689bcf1c1bc6e6a31f247686f275"
 dependencies = [
  "cfg-if",
  "core-foundation-sys",
@@ -5496,19 +5507,6 @@ dependencies = [
  "std",
 ]
 
-[[package]]
-name = "tester"
-version = "0.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89e8bf7e0eb2dd7b4228cc1b6821fc5114cd6841ae59f652a85488c016091e5f"
-dependencies = [
- "cfg-if",
- "getopts",
- "libc",
- "num_cpus",
- "term",
-]
-
 [[package]]
 name = "thin-vec"
 version = "0.2.13"
@@ -5778,17 +5776,6 @@ dependencies = [
  "tracing-subscriber",
 ]
 
-[[package]]
-name = "tracing-log"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f751112709b4e791d8ce53e32c4ed2d353565a795ce84da2285393f41557bdf2"
-dependencies = [
- "log",
- "once_cell",
- "tracing-core",
-]
-
 [[package]]
 name = "tracing-log"
 version = "0.2.0"
@@ -5807,7 +5794,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ad0f048c97dbd9faa9b7df56362b8ebcaa52adb06b498c050d2f4e32f90a7a8b"
 dependencies = [
  "matchers",
- "nu-ansi-term",
+ "nu-ansi-term 0.46.0",
  "once_cell",
  "parking_lot",
  "regex",
@@ -5816,18 +5803,18 @@ dependencies = [
  "thread_local",
  "tracing",
  "tracing-core",
- "tracing-log 0.2.0",
+ "tracing-log",
 ]
 
 [[package]]
 name = "tracing-tree"
-version = "0.2.5"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2ec6adcab41b1391b08a308cc6302b79f8095d1673f6947c2dc65ffb028b0b2d"
+checksum = "65139ecd2c3f6484c3b99bc01c77afe21e95473630747c7aca525e78b0666675"
 dependencies = [
- "nu-ansi-term",
+ "nu-ansi-term 0.49.0",
  "tracing-core",
- "tracing-log 0.1.4",
+ "tracing-log",
  "tracing-subscriber",
 ]
 
 
@@ -1,27 +1,36 @@
-# The Rust Programming Language
-
-[![Rust Community](https://img.shields.io/badge/Rust_Community%20-Join_us-brightgreen?style=plastic&logo=rust)](https://www.rust-lang.org/community)
+<div align="center">
+  <picture>
+    <source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/rust-lang/www.rust-lang.org/master/static/images/rust-social-wide-dark.svg">
+    <source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/rust-lang/www.rust-lang.org/master/static/images/rust-social-wide-light.svg">
+    <img alt="The Rust Programming Language: A language empowering everyone to build reliable and efficient software"
+         src="https://raw.githubusercontent.com/rust-lang/www.rust-lang.org/master/static/images/rust-social-wide-light.svg"
+         width="50%">
+  </picture>
+
+[Website][Rust] | [Getting started] | [Learn] | [Documentation] | [Contributing]
+</div>
 
 This is the main source code repository for [Rust]. It contains the compiler,
 standard library, and documentation.
 
 [Rust]: https://www.rust-lang.org/
+[Getting Started]: https://www.rust-lang.org/learn/get-started
+[Learn]: https://www.rust-lang.org/learn
+[Documentation]: https://www.rust-lang.org/learn#learn-use
+[Contributing]: CONTRIBUTING.md
+
+## Why Rust?
 
-**Note: this README is for _users_ rather than _contributors_.**
-If you wish to _contribute_ to the compiler, you should read
-[CONTRIBUTING.md](CONTRIBUTING.md) instead.
+- **Performance:** Fast and memory-efficient, suitable for critical services, embedded devices, and easily integrate with other languages.
 
-<details>
-<summary>Table of Contents</summary>
+- **Reliability:** Our rich type system and ownership model ensure memory and thread safety, reducing bugs at compile-time.
 
-- [Quick Start](#quick-start)
-- [Installing from Source](#installing-from-source)
-- [Getting Help](#getting-help)
-- [Contributing](#contributing)
-- [License](#license)
-- [Trademark](#trademark)
+- **Productivity:** Comprehensive documentation, a compiler committed to providing great diagnostics, and advanced tooling including package manager and build tool ([Cargo]), auto-formatter ([rustfmt]), linter ([Clippy]) and editor support ([rust-analyzer]).
 
-</details>
+[Cargo]: https://github.com/rust-lang/cargo
+[rustfmt]: https://github.com/rust-lang/rustfmt
+[Clippy]: https://github.com/rust-lang/rust-clippy
+[rust-analyzer]: https://github.com/rust-lang/rust-analyzer
 
 ## Quick Start
 
 
@@ -1,3 +1,13 @@
+Version 1.77.1 (2024-03-28)
+===========================
+
+<a id="1.77.1"></a>
+
+- [Revert stripping debuginfo by default for Windows](https://github.com/rust-lang/cargo/pull/13654)
+  This fixes a regression in 1.77 by reverting to the previous default.
+  Platforms other than Windows are not affected.
+- Internal: [Fix heading anchor rendering in doc pages](https://github.com/rust-lang/rust/pull/122693)
+
 Version 1.77.0 (2024-03-21)
 ==========================
 
 
@@ -698,6 +698,7 @@ impl fmt::Display for AlignFromBytesError {
 
 impl Align {
     pub const ONE: Align = Align { pow2: 0 };
+    pub const EIGHT: Align = Align { pow2: 3 };
     // LLVM has a maximal supported alignment of 2^29, we inherit that.
     pub const MAX: Align = Align { pow2: 29 };
 
@@ -707,19 +708,19 @@ impl Align {
     }
 
     #[inline]
-    pub fn from_bytes(align: u64) -> Result<Align, AlignFromBytesError> {
+    pub const fn from_bytes(align: u64) -> Result<Align, AlignFromBytesError> {
         // Treat an alignment of 0 bytes like 1-byte alignment.
         if align == 0 {
             return Ok(Align::ONE);
         }
 
         #[cold]
-        fn not_power_of_2(align: u64) -> AlignFromBytesError {
+        const fn not_power_of_2(align: u64) -> AlignFromBytesError {
             AlignFromBytesError::NotPowerOfTwo(align)
         }
 
         #[cold]
-        fn too_large(align: u64) -> AlignFromBytesError {
+        const fn too_large(align: u64) -> AlignFromBytesError {
             AlignFromBytesError::TooLarge(align)
         }
 
 
@@ -702,19 +702,10 @@ pub struct PatField {
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 #[derive(Encodable, Decodable, HashStable_Generic)]
 pub enum ByRef {
-    Yes,
+    Yes(Mutability),
     No,
 }
 
-impl From<bool> for ByRef {
-    fn from(b: bool) -> ByRef {
-        match b {
-            false => ByRef::No,
-            true => ByRef::Yes,
-        }
-    }
-}
-
 /// Explicit binding annotations given in the HIR for a binding. Note
 /// that this is not the final binding *mode* that we infer after type
 /// inference.
@@ -724,16 +715,20 @@ pub struct BindingAnnotation(pub ByRef, pub Mutability);
 
 impl BindingAnnotation {
     pub const NONE: Self = Self(ByRef::No, Mutability::Not);
-    pub const REF: Self = Self(ByRef::Yes, Mutability::Not);
+    pub const REF: Self = Self(ByRef::Yes(Mutability::Not), Mutability::Not);
     pub const MUT: Self = Self(ByRef::No, Mutability::Mut);
-    pub const REF_MUT: Self = Self(ByRef::Yes, Mutability::Mut);
+    pub const REF_MUT: Self = Self(ByRef::Yes(Mutability::Mut), Mutability::Not);
+    pub const MUT_REF: Self = Self(ByRef::Yes(Mutability::Not), Mutability::Mut);
+    pub const MUT_REF_MUT: Self = Self(ByRef::Yes(Mutability::Mut), Mutability::Mut);
 
     pub fn prefix_str(self) -> &'static str {
         match self {
             Self::NONE => "",
             Self::REF => "ref ",
             Self::MUT => "mut ",
             Self::REF_MUT => "ref mut ",
+            Self::MUT_REF => "mut ref ",
+            Self::MUT_REF_MUT => "mut ref mut ",
         }
     }
 }
@@ -1281,7 +1276,8 @@ impl Expr {
             ExprKind::While(..) => ExprPrecedence::While,
             ExprKind::ForLoop { .. } => ExprPrecedence::ForLoop,
             ExprKind::Loop(..) => ExprPrecedence::Loop,
-            ExprKind::Match(..) => ExprPrecedence::Match,
+            ExprKind::Match(_, _, MatchKind::Prefix) => ExprPrecedence::Match,
+            ExprKind::Match(_, _, MatchKind::Postfix) => ExprPrecedence::PostfixMatch,
             ExprKind::Closure(..) => ExprPrecedence::Closure,
             ExprKind::Block(..) => ExprPrecedence::Block,
             ExprKind::TryBlock(..) => ExprPrecedence::TryBlock,
@@ -2488,6 +2484,14 @@ pub enum CoroutineKind {
 }
 
 impl CoroutineKind {
+    pub fn span(self) -> Span {
+        match self {
+            CoroutineKind::Async { span, .. } => span,
+            CoroutineKind::Gen { span, .. } => span,
+            CoroutineKind::AsyncGen { span, .. } => span,
+        }
+    }
+
     pub fn is_async(self) -> bool {
         matches!(self, CoroutineKind::Async { .. })
     }
@@ -3346,7 +3350,7 @@ impl TryFrom<ItemKind> for ForeignItemKind {
 pub type ForeignItem = Item<ForeignItemKind>;
 
 // Some nodes are used a lot. Make sure they don't unintentionally get bigger.
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+#[cfg(all(any(target_arch = "x86_64", target_arch = "aarch64"), target_pointer_width = "64"))]
 mod size_asserts {
     use super::*;
     use rustc_data_structures::static_assert_size;
 
@@ -1,25 +1,21 @@
 //! The AST pointer.
 //!
-//! Provides `P<T>`, a frozen owned smart pointer.
+//! Provides [`P<T>`][struct@P], an owned smart pointer.
 //!
 //! # Motivations and benefits
 //!
 //! * **Identity**: sharing AST nodes is problematic for the various analysis
 //!   passes (e.g., one may be able to bypass the borrow checker with a shared
 //!   `ExprKind::AddrOf` node taking a mutable borrow).
 //!
-//! * **Immutability**: `P<T>` disallows mutating its inner `T`, unlike `Box<T>`
-//!   (unless it contains an `Unsafe` interior, but that may be denied later).
-//!   This mainly prevents mistakes, but also enforces a kind of "purity".
-//!
 //! * **Efficiency**: folding can reuse allocation space for `P<T>` and `Vec<T>`,
 //!   the latter even when the input and output types differ (as it would be the
 //!   case with arenas or a GADT AST using type parameters to toggle features).
 //!
-//! * **Maintainability**: `P<T>` provides a fixed interface - `Deref`,
-//!   `and_then` and `map` - which can remain fully functional even if the
-//!   implementation changes (using a special thread-local heap, for example).
-//!   Moreover, a switch to, e.g., `P<'a, T>` would be easy and mostly automated.
+//! * **Maintainability**: `P<T>` provides an interface, which can remain fully
+//!   functional even if the implementation changes (using a special thread-local
+//!   heap, for example). Moreover, a switch to, e.g., `P<'a, T>` would be easy
+//!   and mostly automated.
 
 use std::fmt::{self, Debug, Display};
 use std::ops::{Deref, DerefMut};
@@ -29,6 +25,8 @@ use rustc_serialize::{Decodable, Decoder, Encodable, Encoder};
 
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 /// An owned smart pointer.
+///
+/// See the [module level documentation][crate::ptr] for details.
 pub struct P<T: ?Sized> {
     ptr: Box<T>,
 }
 
@@ -1021,7 +1021,7 @@ where
 }
 
 // Some types are used a lot. Make sure they don't unintentionally get bigger.
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+#[cfg(all(any(target_arch = "x86_64", target_arch = "aarch64"), target_pointer_width = "64"))]
 mod size_asserts {
     use super::*;
     use rustc_data_structures::static_assert_size;
 
@@ -768,7 +768,7 @@ impl DelimSpacing {
 }
 
 // Some types are used a lot. Make sure they don't unintentionally get bigger.
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
+#[cfg(all(any(target_arch = "x86_64", target_arch = "aarch64"), target_pointer_width = "64"))]
 mod size_asserts {
     use super::*;
     use rustc_data_structures::static_assert_size;
 
@@ -281,6 +281,7 @@ pub enum ExprPrecedence {
     ForLoop,
     Loop,
     Match,
+    PostfixMatch,
     ConstBlock,
     Block,
     TryBlock,
@@ -334,7 +335,8 @@ impl ExprPrecedence {
             | ExprPrecedence::InlineAsm
             | ExprPrecedence::Mac
             | ExprPrecedence::FormatArgs
-            | ExprPrecedence::OffsetOf => PREC_POSTFIX,
+            | ExprPrecedence::OffsetOf
+            | ExprPrecedence::PostfixMatch => PREC_POSTFIX,
 
             // Never need parens
             ExprPrecedence::Array
@@ -390,7 +392,8 @@ pub fn contains_exterior_struct_lit(value: &ast::Expr) -> bool {
         | ast::ExprKind::Cast(x, _)
         | ast::ExprKind::Type(x, _)
         | ast::ExprKind::Field(x, _)
-        | ast::ExprKind::Index(x, _, _) => {
+        | ast::ExprKind::Index(x, _, _)
+        | ast::ExprKind::Match(x, _, ast::MatchKind::Postfix) => {
             // &X { y: 1 }, X { y: 1 }.y
             contains_exterior_struct_lit(x)
         }
Original file line number	Diff line number	Diff line change
`@@ -698,6 +698,7 @@ impl fmt::Display for AlignFromBytesError {`
`698`	`698`
`699`	`699`	`impl Align {`
`700`	`700`	`pub const ONE: Align = Align { pow2: 0 };`
	`701`	`+ pub const EIGHT: Align = Align { pow2: 3 };`
`701`	`702`	`// LLVM has a maximal supported alignment of 2^29, we inherit that.`
`702`	`703`	`pub const MAX: Align = Align { pow2: 29 };`
`703`	`704`
`@@ -707,19 +708,19 @@ impl Align {`
`707`	`708`	`}`
`708`	`709`
`709`	`710`	`#[inline]`
`710`		`- pub fn from_bytes(align: u64) -> Result<Align, AlignFromBytesError> {`
	`711`	`+ pub const fn from_bytes(align: u64) -> Result<Align, AlignFromBytesError> {`
`711`	`712`	`// Treat an alignment of 0 bytes like 1-byte alignment.`
`712`	`713`	`if align == 0 {`
`713`	`714`	`return Ok(Align::ONE);`
`714`	`715`	`}`
`715`	`716`
`716`	`717`	`#[cold]`
`717`		`- fn not_power_of_2(align: u64) -> AlignFromBytesError {`
	`718`	`+ const fn not_power_of_2(align: u64) -> AlignFromBytesError {`
`718`	`719`	`AlignFromBytesError::NotPowerOfTwo(align)`
`719`	`720`	`}`
`720`	`721`
`721`	`722`	`#[cold]`
`722`		`- fn too_large(align: u64) -> AlignFromBytesError {`
	`723`	`+ const fn too_large(align: u64) -> AlignFromBytesError {`
`723`	`724`	`AlignFromBytesError::TooLarge(align)`
`724`	`725`	`}`
`725`	`726`
Original file line number	Diff line number	Diff line change
`@@ -1021,7 +1021,7 @@ where`
`1021`	`1021`	`}`
`1022`	`1022`
`1023`	`1023`	`// Some types are used a lot. Make sure they don't unintentionally get bigger.`
`1024`		`-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]`
	`1024`	`+#[cfg(all(any(target_arch = "x86_64", target_arch = "aarch64"), target_pointer_width = "64"))]`
`1025`	`1025`	`mod size_asserts {`
`1026`	`1026`	`use super::*;`
`1027`	`1027`	`use rustc_data_structures::static_assert_size;`
Original file line number	Diff line number	Diff line change
`@@ -768,7 +768,7 @@ impl DelimSpacing {`
`768`	`768`	`}`
`769`	`769`
`770`	`770`	`// Some types are used a lot. Make sure they don't unintentionally get bigger.`
`771`		`-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]`
	`771`	`+#[cfg(all(any(target_arch = "x86_64", target_arch = "aarch64"), target_pointer_width = "64"))]`
`772`	`772`	`mod size_asserts {`
`773`	`773`	`use super::*;`
`774`	`774`	`use rustc_data_structures::static_assert_size;`