Rollup of 8 pull requests

Cargo.lock

@@ -2598,12 +2598,76 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "num"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35bd024e8b2ff75562e5f34e7f4905839deb4b22955ef5e73d2fea1b9813cb23"
+dependencies = [
+ "num-bigint",
+ "num-complex",
+ "num-integer",
+ "num-iter",
+ "num-rational",
+ "num-traits",
+]
+
+[[package]]
+name = "num-bigint"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a5e44f723f1133c9deac646763579fdb3ac745e418f2a7af9cd0c431da1f20b9"
+dependencies = [
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-complex"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73f88a1307638156682bada9d7604135552957b7818057dcef22705b4d509495"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "num-conv"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
 
+[[package]]
+name = "num-integer"
+version = "0.1.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7969661fd2958a5cb096e56c8e1ad0444ac2bbcd0061bd28660485a44879858f"
+dependencies = [
+ "num-traits",
+]
+
+[[package]]
+name = "num-iter"
+version = "0.1.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1429034a0490724d0075ebb2bc9e875d6503c3cf69e235a8941aa757d83ef5bf"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-rational"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f83d14da390562dca69fc84082e73e548e1ad308d24accdedd2720017cb37824"
+dependencies = [
+ "num-bigint",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -5630,6 +5694,17 @@ dependencies = [
  "std",
 ]
 
+[[package]]
+name = "test-float-parse"
+version = "0.1.0"
+dependencies = [
+ "indicatif",
+ "num",
+ "rand",
+ "rand_chacha",
+ "rayon",
+]
+
 [[package]]
 name = "textwrap"
 version = "0.16.1"

Cargo.toml

@@ -4,6 +4,7 @@ members = [
   "compiler/rustc",
   "library/std",
   "library/sysroot",
+  "src/etc/test-float-parse",
   "src/rustdoc-json-types",
   "src/tools/build_helper",
   "src/tools/cargotest",
@@ -109,6 +110,18 @@ strip = true
 debug = 0
 strip = true
 
+# Bigint libraries are slow without optimization, speed up testing
+[profile.dev.package.test-float-parse]
+opt-level = 3
+
+# Speed up the binary as much as possible
+[profile.release.package.test-float-parse]
+opt-level = 3
+codegen-units = 1
+# FIXME: LTO cannot be enabled for binaries in a workspace
+# <https://github.com/rust-lang/cargo/issues/9330>
+# lto = true
+
 [patch.crates-io]
 # See comments in `library/rustc-std-workspace-core/README.md` for what's going on
 # here

compiler/rustc_codegen_cranelift/Readme.md

@@ -70,7 +70,7 @@ For more docs on how to build and test see [build_system/usage.txt](build_system
 |FreeBSD|✅[^no-rustup]|❓|❓|❓|
 |AIX|❌[^xcoff]|N/A|N/A|❌[^xcoff]|
 |Other unixes|❓|❓|❓|❓|
-|macOS|✅|✅[^no-rustup]|N/A|N/A|
+|macOS|✅|✅|N/A|N/A|
 |Windows|✅[^no-rustup]|❌|N/A|N/A|
 
 ✅: Fully supported and tested

library/alloc/src/boxed.rs

@@ -704,7 +704,7 @@ impl<T> Box<[T]> {
     }
 
     /// Constructs a new boxed slice with uninitialized contents. Returns an error if
-    /// the allocation fails
+    /// the allocation fails.
     ///
     /// # Examples
     ///
@@ -739,7 +739,7 @@ impl<T> Box<[T]> {
     }
 
     /// Constructs a new boxed slice with uninitialized contents, with the memory
-    /// being filled with `0` bytes. Returns an error if the allocation fails
+    /// being filled with `0` bytes. Returns an error if the allocation fails.
     ///
     /// See [`MaybeUninit::zeroed`][zeroed] for examples of correct and incorrect usage
     /// of this method.
@@ -831,6 +831,85 @@ impl<T, A: Allocator> Box<[T], A> {
     pub fn new_zeroed_slice_in(len: usize, alloc: A) -> Box<[mem::MaybeUninit<T>], A> {
         unsafe { RawVec::with_capacity_zeroed_in(len, alloc).into_box(len) }
     }
+
+    /// Constructs a new boxed slice with uninitialized contents in the provided allocator. Returns an error if
+    /// the allocation fails.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// #![feature(allocator_api, new_uninit)]
+    ///
+    /// use std::alloc::System;
+    ///
+    /// let mut values = Box::<[u32], _>::try_new_uninit_slice_in(3, System)?;
+    /// let values = unsafe {
+    ///     // Deferred initialization:
+    ///     values[0].as_mut_ptr().write(1);
+    ///     values[1].as_mut_ptr().write(2);
+    ///     values[2].as_mut_ptr().write(3);
+    ///     values.assume_init()
+    /// };
+    ///
+    /// assert_eq!(*values, [1, 2, 3]);
+    /// # Ok::<(), std::alloc::AllocError>(())
+    /// ```
+    #[unstable(feature = "allocator_api", issue = "32838")]
+    #[inline]
+    pub fn try_new_uninit_slice_in(
+        len: usize,
+        alloc: A,
+    ) -> Result<Box<[mem::MaybeUninit<T>], A>, AllocError> {
+        let ptr = if T::IS_ZST || len == 0 {
+            NonNull::dangling()
+        } else {
+            let layout = match Layout::array::<mem::MaybeUninit<T>>(len) {
+                Ok(l) => l,
+                Err(_) => return Err(AllocError),
+            };
+            alloc.allocate(layout)?.cast()
+        };
+        unsafe { Ok(RawVec::from_raw_parts_in(ptr.as_ptr(), len, alloc).into_box(len)) }
+    }
+
+    /// Constructs a new boxed slice with uninitialized contents in the provided allocator, with the memory
+    /// being filled with `0` bytes. Returns an error if the allocation fails.
+    ///
+    /// See [`MaybeUninit::zeroed`][zeroed] for examples of correct and incorrect usage
+    /// of this method.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// #![feature(allocator_api, new_uninit)]
+    ///
+    /// use std::alloc::System;
+    ///
+    /// let values = Box::<[u32], _>::try_new_zeroed_slice_in(3, System)?;
+    /// let values = unsafe { values.assume_init() };
+    ///
+    /// assert_eq!(*values, [0, 0, 0]);
+    /// # Ok::<(), std::alloc::AllocError>(())
+    /// ```
+    ///
+    /// [zeroed]: mem::MaybeUninit::zeroed
+    #[unstable(feature = "allocator_api", issue = "32838")]
+    #[inline]
+    pub fn try_new_zeroed_slice_in(
+        len: usize,
+        alloc: A,
+    ) -> Result<Box<[mem::MaybeUninit<T>], A>, AllocError> {
+        let ptr = if T::IS_ZST || len == 0 {
+            NonNull::dangling()
+        } else {
+            let layout = match Layout::array::<mem::MaybeUninit<T>>(len) {
+                Ok(l) => l,
+                Err(_) => return Err(AllocError),
+            };
+            alloc.allocate_zeroed(layout)?.cast()
+        };
+        unsafe { Ok(RawVec::from_raw_parts_in(ptr.as_ptr(), len, alloc).into_box(len)) }
+    }
 }
 
 impl<T, A: Allocator> Box<mem::MaybeUninit<T>, A> {

library/std/src/os/horizon/mod.rs

@@ -1,5 +1,6 @@
 //! Definitions for Horizon OS
 
+#![forbid(unsafe_op_in_unsafe_fn)]
 #![stable(feature = "raw_ext", since = "1.1.0")]
 
 pub mod fs;

library/std/src/os/horizon/raw.rs

@@ -38,6 +38,7 @@ pub type time_t = libc::time_t;
 #[repr(C)]
 #[derive(Clone)]
 #[stable(feature = "raw_ext", since = "1.1.0")]
+#[allow(dead_code)] // This exists for parity with other `raw` modules, but isn't actually used.
 pub struct stat {
     #[stable(feature = "raw_ext", since = "1.1.0")]
     pub st_dev: dev_t,

library/std/src/sys/pal/unix/alloc.rs

@@ -67,7 +67,7 @@ cfg_if::cfg_if! {
     ))] {
         #[inline]
         unsafe fn aligned_malloc(layout: &Layout) -> *mut u8 {
-            libc::memalign(layout.align(), layout.size()) as *mut u8
+            unsafe { libc::memalign(layout.align(), layout.size()) as *mut u8 }
         }
     } else {
         #[inline]

library/std/src/sys/pal/unix/process/process_unsupported.rs

@@ -1,4 +1,3 @@
-use crate::fmt;
 use crate::io;
 use crate::num::NonZero;
 use crate::sys::pal::unix::unsupported::*;

src/bootstrap/mk/Makefile.in

@@ -51,6 +51,7 @@ check-aux:
 	$(Q)$(BOOTSTRAP) test --stage 2 \
 		src/tools/cargo \
 		src/tools/cargotest \
+		src/etc/test-float-parse \
 		$(BOOTSTRAP_ARGS)
 	# Run standard library tests in Miri.
 	$(Q)BOOTSTRAP_SKIP_TARGET_SANITY=1 \

src/bootstrap/src/core/build_steps/check.rs

@@ -466,6 +466,7 @@ tool_check_step!(CargoMiri, "src/tools/miri/cargo-miri", SourceType::InTree);
 tool_check_step!(Rls, "src/tools/rls", SourceType::InTree);
 tool_check_step!(Rustfmt, "src/tools/rustfmt", SourceType::InTree);
 tool_check_step!(MiroptTestTools, "src/tools/miropt-test-tools", SourceType::InTree);
+tool_check_step!(TestFloatParse, "src/etc/test-float-parse", SourceType::InTree);
 
 tool_check_step!(Bootstrap, "src/bootstrap", SourceType::InTree, false);
 

src/bootstrap/src/core/build_steps/clippy.rs

@@ -326,4 +326,5 @@ lint_any!(
     Rustfmt, "src/tools/rustfmt", "rustfmt";
     RustInstaller, "src/tools/rust-installer", "rust-installer";
     Tidy, "src/tools/tidy", "tidy";
+    TestFloatParse, "src/etc/test-float-parse", "test-float-parse";
 );

src/bootstrap/src/core/build_steps/test.rs

@@ -3505,3 +3505,80 @@ impl Step for CodegenGCC {
         cargo.into_cmd().run(builder);
     }
 }
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub struct TestFloatParse {
+    path: PathBuf,
+    host: TargetSelection,
+}
+
+impl Step for TestFloatParse {
+    type Output = ();
+    const ONLY_HOSTS: bool = true;
+    const DEFAULT: bool = true;
+
+    fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
+        run.path("src/etc/test-float-parse")
+    }
+
+    fn make_run(run: RunConfig<'_>) {
+        for path in run.paths {
+            let path = path.assert_single_path().path.clone();
+            run.builder.ensure(Self { path, host: run.target });
+        }
+    }
+
+    fn run(self, builder: &Builder<'_>) {
+        let bootstrap_host = builder.config.build;
+        let compiler = builder.compiler(0, bootstrap_host);
+        let path = self.path.to_str().unwrap();
+        let crate_name = self.path.components().last().unwrap().as_os_str().to_str().unwrap();
+
+        builder.ensure(compile::Std::new(compiler, self.host));
+
+        // Run any unit tests in the crate
+        let cargo_test = tool::prepare_tool_cargo(
+            builder,
+            compiler,
+            Mode::ToolStd,
+            bootstrap_host,
+            "test",
+            path,
+            SourceType::InTree,
+            &[],
+        );
+
+        run_cargo_test(
+            cargo_test,
+            &[],
+            &[],
+            crate_name,
+            crate_name,
+            compiler,
+            bootstrap_host,
+            builder,
+        );
+
+        // Run the actual parse tests.
+        let mut cargo_run = tool::prepare_tool_cargo(
+            builder,
+            compiler,
+            Mode::ToolStd,
+            bootstrap_host,
+            "run",
+            path,
+            SourceType::InTree,
+            &[],
+        );
+
+        cargo_run.arg("--");
+        if builder.config.args().is_empty() {
+            // By default, exclude tests that take longer than ~1m.
+            cargo_run.arg("--skip-huge");
+        } else {
+            cargo_run.args(builder.config.args());
+        }
+
+        cargo_run.into_cmd().run(builder);
+    }
+}

src/bootstrap/src/core/builder.rs

@@ -826,6 +826,7 @@ impl<'a> Builder<'a> {
                 clippy::Rustdoc,
                 clippy::Rustfmt,
                 clippy::RustInstaller,
+                clippy::TestFloatParse,
                 clippy::Tidy,
             ),
             Kind::Check | Kind::Fix => describe!(
@@ -840,6 +841,7 @@ impl<'a> Builder<'a> {
                 check::Rls,
                 check::Rustfmt,
                 check::RustAnalyzer,
+                check::TestFloatParse,
                 check::Bootstrap,
             ),
             Kind::Test => describe!(
@@ -901,6 +903,7 @@ impl<'a> Builder<'a> {
                 test::RustdocJson,
                 test::HtmlCheck,
                 test::RustInstaller,
+                test::TestFloatParse,
                 // Run bootstrap close to the end as it's unlikely to fail
                 test::Bootstrap,
                 // Run run-make last, since these won't pass without make on Windows