Auto merge of #55347 - pietroalbini:rollup, r=pietroalbini

Rollup of 22 pull requests

Successful merges:

 - #53507 (Add doc for impl From for Waker)
 - #53931 (Gradually expanding libstd's keyword documentation)
 - #54965 (update tcp stream documentation)
 - #54977 (Accept `Option<Box<$t:ty>>` in macro argument)
 - #55138 (in which unused-parens suggestions heed what the user actually wrote)
 - #55173 (Suggest appropriate syntax on missing lifetime specifier in return type)
 - #55200 (Documents `From` implementations for `Stdio`)
 - #55245 (submodules: update clippy from 5afdf8b7 to b1d03437)
 - #55247 (Clarified code example in char primitive doc)
 - #55251 (Fix a typo in the documentation of RangeInclusive)
 - #55253 (only issue "variant of the expected type" suggestion for enums)
 - #55254 (Correct trailing ellipsis in name_from_pat)
 - #55269 (fix typos in various places)
 - #55282 (Remove redundant clone)
 - #55285 (Do some copy editing on the release notes)
 - #55291 (Update stdsimd submodule)
 - #55296 (Set RUST_BACKTRACE=0 for rustdoc-ui/failed-doctest-output.rs)
 - #55306 (Regression test for #54478.)
 - #55328 (Fix doc for new copysign functions)
 - #55340 (Operands no longer appear in places)
 - #55345 (Remove is_null)
 - #55348 (Update RELEASES.md after destabilization of non_modrs_mods)

Failed merges:

r? @ghost

6 files changed, 10 insertions, 5 deletions

diff --git a/src/libcore/alloc.rs b/src/libcore/alloc.rs
index 35e4eea756d..4efcaae59b0 100644
--- a/src/libcore/alloc.rs
+++ b/src/libcore/alloc.rs
@@ -518,7 +518,7 @@ pub unsafe trait GlobalAlloc {
     /// The block is described by the given `ptr` pointer and `layout`.
     ///
     /// If this returns a non-null pointer, then ownership of the memory block
-    /// referenced by `ptr` has been transferred to this alloctor.
+    /// referenced by `ptr` has been transferred to this allocator.
     /// The memory may or may not have been deallocated,
     /// and should be considered unusable (unless of course it was
     /// transferred back to the caller again via the return value of
diff --git a/src/libcore/intrinsics.rs b/src/libcore/intrinsics.rs
index 56a24168e28..cceae9249e4 100644
--- a/src/libcore/intrinsics.rs
+++ b/src/libcore/intrinsics.rs
@@ -1025,7 +1025,7 @@ extern "rust-intrinsic" {
     ///         // to avoid problems in case something further down panics.
     ///         src.set_len(0);
     ///
-    ///         // The two regions cannot overlap becuase mutable references do
+    ///         // The two regions cannot overlap because mutable references do
     ///         // not alias, and two different vectors cannot own the same
     ///         // memory.
     ///         ptr::copy_nonoverlapping(src_ptr, dst_ptr, src_len);
diff --git a/src/libcore/ops/range.rs b/src/libcore/ops/range.rs
index 07ba285ea5c..fd3e50998fe 100644
--- a/src/libcore/ops/range.rs
+++ b/src/libcore/ops/range.rs
@@ -304,7 +304,7 @@ impl<Idx: PartialOrd<Idx>> RangeTo<Idx> {
     }
 }
 
-/// An range bounded inclusively below and above (`start..=end`).
+/// A range bounded inclusively below and above (`start..=end`).
 ///
 /// The `RangeInclusive` `start..=end` contains all values with `x >= start`
 /// and `x <= end`.  It is empty unless `start <= end`.
diff --git a/src/libcore/pin.rs b/src/libcore/pin.rs
index 0224560af4c..a03c080fb3f 100644
--- a/src/libcore/pin.rs
+++ b/src/libcore/pin.rs
@@ -102,7 +102,7 @@ pub use marker::Unpin;
 /// value in place, preventing the value referenced by that pointer from being moved
 /// unless it implements [`Unpin`].
 ///
-/// See the [`pin` module] documentation for furthur explanation on pinning.
+/// See the [`pin` module] documentation for further explanation on pinning.
 ///
 /// [`Unpin`]: ../../std/marker/trait.Unpin.html
 /// [`pin` module]: ../../std/pin/index.html
diff --git a/src/libcore/ptr.rs b/src/libcore/ptr.rs
index 1c761ba21b3..b699cb02884 100644
--- a/src/libcore/ptr.rs
+++ b/src/libcore/ptr.rs
@@ -38,7 +38,7 @@
 //!   underlying object is live and no reference (just raw pointers) is used to
 //!   access the same memory.
 //!
-//! These axioms, along with careful use of [`offset`] for pointer arithmentic,
+//! These axioms, along with careful use of [`offset`] for pointer arithmetic,
 //! are enough to correctly implement many useful things in unsafe code. Stronger guarantees
 //! will be provided eventually, as the [aliasing] rules are being determined. For more
 //! information, see the [book] as well as the section in the reference devoted
diff --git a/src/libcore/task/wake.rs b/src/libcore/task/wake.rs
index ab4ae50c443..c9fb22e0080 100644
--- a/src/libcore/task/wake.rs
+++ b/src/libcore/task/wake.rs
@@ -188,6 +188,11 @@ impl LocalWaker {
 }
 
 impl From<LocalWaker> for Waker {
+    /// Converts a `LocalWaker` into a `Waker`.
+    ///
+    /// This conversion turns a `!Sync` `LocalWaker` into a `Sync` `Waker`, allowing a wakeup
+    /// object to be sent to another thread, but giving up its ability to do specialized
+    /// thread-local wakeup behavior.
     #[inline]
     fn from(local_waker: LocalWaker) -> Self {
         local_waker.0