Merge branch 'master' into stablize_diagnostic_namespace

.mailmap

@@ -129,7 +129,7 @@ Clement Miao <[email protected]>
 Clément Renault <[email protected]>
 Cliff Dyer <[email protected]>
 Clinton Ryan <[email protected]>
-Corey Richardson <[email protected]> Elaine "See More" Nemo <[email protected]>
+ember arlynx <[email protected]> <[email protected]>
 Crazycolorz5 <[email protected]>
 csmoe <[email protected]>
 Cyryl Płotnicki <[email protected]>

Cargo.lock

@@ -878,12 +878,12 @@ dependencies = [
 
 [[package]]
 name = "ctrlc"
-version = "3.4.0"
+version = "3.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a011bbe2c35ce9c1f143b7af6f94f29a167beb4cd1d29e6740ce836f723120e"
+checksum = "b467862cc8610ca6fc9a1532d7777cee0804e678ab45410897b9396495994a0b"
 dependencies = [
  "nix",
- "windows-sys 0.48.0",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -2187,16 +2187,6 @@ dependencies = [
  "cc",
 ]
 
-[[package]]
-name = "libloading"
-version = "0.7.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b67380fd3b2fbe7527a606e18729d21c6f3951633d0500574c4dc22d2d638b9f"
-dependencies = [
- "cfg-if",
- "winapi",
-]
-
 [[package]]
 name = "libloading"
 version = "0.8.1"
@@ -2366,9 +2356,9 @@ dependencies = [
 
 [[package]]
 name = "measureme"
-version = "10.1.2"
+version = "11.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "45e381dcdad44c3c435f8052b08c5c4a1449c48ab56f312345eae12d7a693dbe"
+checksum = "dfa4a40f09af7aa6faef38285402a78847d0d72bf8827006cd2a332e1e6e4a8d"
 dependencies = [
  "log",
  "memmap2",
@@ -2479,7 +2469,7 @@ dependencies = [
  "lazy_static",
  "libc",
  "libffi",
- "libloading 0.8.1",
+ "libloading",
  "log",
  "measureme",
  "rand",
@@ -2522,14 +2512,13 @@ checksum = "e4a24736216ec316047a1fc4252e27dabb04218aa4a3f37c6e7ddbf1f9782b54"
 
 [[package]]
 name = "nix"
-version = "0.26.2"
+version = "0.27.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bfdda3d196821d6af13126e40375cdf7da646a96114af134d5f417a9a1dc8e1a"
+checksum = "2eb04e9c688eff1c89d72b407f168cf79bb9e867a9d3323ed6c01519eb9cc053"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "cfg-if",
  "libc",
- "static_assertions",
 ]
 
 [[package]]
@@ -2651,11 +2640,11 @@ dependencies = [
 
 [[package]]
 name = "openssl"
-version = "0.10.55"
+version = "0.10.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "345df152bc43501c5eb9e4654ff05f794effb78d4efe3d53abc158baddc0703d"
+checksum = "15c9d69dd87a29568d4d017cfe8ec518706046a05184e5aea92d0af890b803c8"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "cfg-if",
  "foreign-types",
  "libc",
@@ -2683,9 +2672,9 @@ checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.90"
+version = "0.9.99"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "374533b0e45f3a7ced10fcaeccca020e66656bc03dac384f852e4e5a7a8104a6"
+checksum = "22e1bf214306098e4832460f797824c05d25aacdf896f64a985fb0fd992454ae"
 dependencies = [
  "cc",
  "libc",
@@ -4005,7 +3994,7 @@ dependencies = [
 name = "rustc_interface"
 version = "0.0.0"
 dependencies = [
- "libloading 0.7.4",
+ "libloading",
  "rustc-rayon",
  "rustc-rayon-core",
  "rustc_ast",
@@ -4135,7 +4124,7 @@ name = "rustc_metadata"
 version = "0.0.0"
 dependencies = [
  "bitflags 2.4.1",
- "libloading 0.7.4",
+ "libloading",
  "odht",
  "rustc_ast",
  "rustc_attr",
@@ -4355,6 +4344,7 @@ name = "rustc_pattern_analysis"
 version = "0.0.0"
 dependencies = [
  "derivative",
+ "rustc-hash",
  "rustc_apfloat",
  "rustc_arena",
  "rustc_data_structures",
@@ -5353,9 +5343,9 @@ dependencies = [
 
 [[package]]
 name = "thin-vec"
-version = "0.2.12"
+version = "0.2.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aac81b6fd6beb5884b0cf3321b8117e6e5d47ecb6fc89f414cfdcca8b2fe2dd8"
+checksum = "a38c90d48152c236a3ab59271da4f4ae63d678c5d7ad6b7714d7cb9760be5e4b"
 
 [[package]]
 name = "thiserror"
@@ -6152,6 +6142,15 @@ dependencies = [
  "windows-targets 0.48.1",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets 0.52.0",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.42.2"
@@ -6182,6 +6181,21 @@ dependencies = [
  "windows_x86_64_msvc 0.48.0",
 ]
 
+[[package]]
+name = "windows-targets"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a18201040b24831fbb9e4eb208f8892e1f50a37feb53cc7ff887feb8f50e7cd"
+dependencies = [
+ "windows_aarch64_gnullvm 0.52.0",
+ "windows_aarch64_msvc 0.52.0",
+ "windows_i686_gnu 0.52.0",
+ "windows_i686_msvc 0.52.0",
+ "windows_x86_64_gnu 0.52.0",
+ "windows_x86_64_gnullvm 0.52.0",
+ "windows_x86_64_msvc 0.52.0",
+]
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.42.2"
@@ -6194,6 +6208,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "91ae572e1b79dba883e0d315474df7305d12f569b400fcf90581b06062f7e1bc"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb7764e35d4db8a7921e09562a0304bf2f93e0a51bfccee0bd0bb0b666b015ea"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.42.2"
@@ -6206,6 +6226,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b2ef27e0d7bdfcfc7b868b317c1d32c641a6fe4629c171b8928c7b08d98d7cf3"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbaa0368d4f1d2aaefc55b6fcfee13f41544ddf36801e793edbbfd7d7df075ef"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.42.2"
@@ -6218,6 +6244,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "622a1962a7db830d6fd0a69683c80a18fda201879f0f447f065a3b7467daa241"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a28637cb1fa3560a16915793afb20081aba2c92ee8af57b4d5f28e4b3e7df313"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.42.2"
@@ -6230,6 +6262,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4542c6e364ce21bf45d69fdd2a8e455fa38d316158cfd43b3ac1c5b1b19f8e00"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ffe5e8e31046ce6230cc7215707b816e339ff4d4d67c65dffa206fd0f7aa7b9a"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.42.2"
@@ -6242,6 +6280,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d6fa32db2bc4a2f5abeacf2b69f7992cd09dca97498da74a151a3132c26befd"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.42.2"
@@ -6254,6 +6298,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a657e1e9d3f514745a572a6846d3c7aa7dbe1658c056ed9c3344c4109a6949e"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.42.2"
@@ -6266,6 +6316,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dff9641d1cd4be8d1a070daf9e3773c5f67e78b4d9d42263020c057706765c04"
+
 [[package]]
 name = "winnow"
 version = "0.4.7"

README.md

@@ -15,6 +15,7 @@ If you wish to _contribute_ to the compiler, you should read
 <summary>Table of Contents</summary>
 
 - [Quick Start](#quick-start)
+- [Installing from Source](#installing-from-source)
 - [Getting Help](#getting-help)
 - [Contributing](#contributing)
 - [License](#license)
@@ -29,9 +30,10 @@ Read ["Installation"] from [The Book].
 ["Installation"]: https://doc.rust-lang.org/book/ch01-01-installation.html
 [The Book]: https://doc.rust-lang.org/book/index.html
 
-## Installing from source
+## Installing from Source
 
-If you really want to install from source (though this is not recommended), see [INSTALL.md](INSTALL.md).
+If you really want to install from source (though this is not recommended), see
+[INSTALL.md](INSTALL.md).
 
 ## Getting Help
 

compiler/rustc_abi/src/lib.rs

@@ -49,7 +49,14 @@ bitflags! {
                                  | ReprFlags::IS_LINEAR.bits();
     }
 }
-rustc_data_structures::external_bitflags_debug! { ReprFlags }
+
+// This is the same as `rustc_data_structures::external_bitflags_debug` but without the
+// `rustc_data_structures` to make it build on stable.
+impl std::fmt::Debug for ReprFlags {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        bitflags::parser::to_writer(self, f)
+    }
+}
 
 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
 #[cfg_attr(feature = "nightly", derive(Encodable_Generic, Decodable_Generic, HashStable_Generic))]

compiler/rustc_arena/src/lib.rs

@@ -484,6 +484,19 @@ impl DroplessArena {
         }
     }
 
+    /// Used by `Lift` to check whether this slice is allocated
+    /// in this arena.
+    #[inline]
+    pub fn contains_slice<T>(&self, slice: &[T]) -> bool {
+        for chunk in self.chunks.borrow_mut().iter_mut() {
+            let ptr = slice.as_ptr().cast::<u8>().cast_mut();
+            if chunk.start() <= ptr && chunk.end() >= ptr {
+                return true;
+            }
+        }
+        false
+    }
+
     /// Allocates a string slice that is copied into the `DroplessArena`, returning a
     /// reference to it. Will panic if passed an empty string.
     ///

compiler/rustc_ast/src/ast.rs

@@ -27,6 +27,7 @@ pub use UnsafeSource::*;
 use crate::ptr::P;
 use crate::token::{self, CommentKind, Delimiter};
 use crate::tokenstream::{DelimSpan, LazyAttrTokenStream, TokenStream};
+use rustc_data_structures::packed::Pu128;
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 use rustc_data_structures::stack::ensure_sufficient_stack;
 use rustc_data_structures::sync::Lrc;
@@ -625,7 +626,8 @@ impl Pat {
             | PatKind::Range(..)
             | PatKind::Ident(..)
             | PatKind::Path(..)
-            | PatKind::MacCall(_) => {}
+            | PatKind::MacCall(_)
+            | PatKind::Err(_) => {}
         }
     }
 
@@ -809,6 +811,9 @@ pub enum PatKind {
 
     /// A macro pattern; pre-expansion.
     MacCall(P<MacCall>),
+
+    /// Placeholder for a pattern that wasn't syntactically well formed in some way.
+    Err(ErrorGuaranteed),
 }
 
 /// Whether the `..` is present in a struct fields pattern.
@@ -1829,7 +1834,7 @@ pub enum LitKind {
     /// A character literal (`'a'`).
     Char(char),
     /// An integer literal (`1`).
-    Int(u128, LitIntType),
+    Int(Pu128, LitIntType),
     /// A float literal (`1.0`, `1f64` or `1E10f64`). The pre-suffix part is
     /// stored as a symbol rather than `f64` so that `LitKind` can impl `Eq`
     /// and `Hash`.

compiler/rustc_ast/src/mut_visit.rs

@@ -1267,7 +1267,7 @@ pub fn noop_visit_pat<T: MutVisitor>(pat: &mut P<Pat>, vis: &mut T) {
     let Pat { id, kind, span, tokens } = pat.deref_mut();
     vis.visit_id(id);
     match kind {
-        PatKind::Wild | PatKind::Rest | PatKind::Never => {}
+        PatKind::Wild | PatKind::Rest | PatKind::Never | PatKind::Err(_) => {}
         PatKind::Ident(_binding_mode, ident, sub) => {
             vis.visit_ident(ident);
             visit_opt(sub, |sub| vis.visit_pat(sub));