Auto merge of #80449 - m-ou-se:rollup-kp2e5n8, r=m-ou-se

Rollup of 11 pull requests

Successful merges:

 - #80383 (clarify wrapping ptr arithmetic docs)
 - #80390 (BTreeMap: rename the area access methods)
 - #80393 (Add links to the source for the rustc and rustdoc books.)
 - #80398 (Use raw version of align_of in rc data_offset)
 - #80402 (Document `InferTy` & co.)
 - #80403 (fix: small typo error in chalk/mod.rs)
 - #80410 (rustdoc book: fix example)
 - #80419 (Add regression test for #80375)
 - #80430 (Add "length" as doc alias to len methods)
 - #80431 (Add "chr" as doc alias to char::from_u32)
 - #80448 (Fix stabilization version of deque_range feature.)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

3 files changed, 3 insertions, 0 deletions

diff --git a/library/std/src/collections/hash/map.rs b/library/std/src/collections/hash/map.rs
index 4f24a8bb75a..0680b1fc329 100644
--- a/library/std/src/collections/hash/map.rs
+++ b/library/std/src/collections/hash/map.rs
@@ -448,6 +448,7 @@ impl<K, V, S> HashMap<K, V, S> {
     /// a.insert(1, "a");
     /// assert_eq!(a.len(), 1);
     /// ```
+    #[doc(alias = "length")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn len(&self) -> usize {
         self.base.len()
diff --git a/library/std/src/collections/hash/set.rs b/library/std/src/collections/hash/set.rs
index 27093c1a077..f49e5801c35 100644
--- a/library/std/src/collections/hash/set.rs
+++ b/library/std/src/collections/hash/set.rs
@@ -199,6 +199,7 @@ impl<T, S> HashSet<T, S> {
     /// v.insert(1);
     /// assert_eq!(v.len(), 1);
     /// ```
+    #[doc(alias = "length")]
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn len(&self) -> usize {
diff --git a/library/std/src/ffi/os_str.rs b/library/std/src/ffi/os_str.rs
index 5d93016cadb..2eef4d58507 100644
--- a/library/std/src/ffi/os_str.rs
+++ b/library/std/src/ffi/os_str.rs
@@ -653,6 +653,7 @@ impl OsStr {
     /// let os_str = OsStr::new("foo");
     /// assert_eq!(os_str.len(), 3);
     /// ```
+    #[doc(alias = "length")]
     #[stable(feature = "osstring_simple_functions", since = "1.9.0")]
     pub fn len(&self) -> usize {
         self.inner.inner.len()