Auto merge of rust-lang#131148 - Urgau:hashbrown-0.15, r=<try>

Update hashbrown to 0.15 and adjust some methods

This PR updates `hashbrown` to 0.15 in the standard library and adjust some methods as well as removing some as they no longer exists in Hashbrown it-self.

 - `HashMap::get_many_mut` change API to return array-of-Option
 - `HashMap::{replace_entry, replace_key}` are removed, FCP close [already finished](rust-lang#44286 (comment))
 - `HashSet::get_or_insert_owned` is removed as it no longer exists in hashbrown

Closes rust-lang#44286
r? `@Amanieu`

Author: bors

compiler/rustc_session/src/config/cfg.rs

@@ -402,18 +402,18 @@ impl CheckCfg {
                 // Get all values map at once otherwise it would be costly.
                 // (8 values * 220 targets ~= 1760 times, at the time of writing this comment).
                 let [
-                    values_target_abi,
-                    values_target_arch,
-                    values_target_endian,
-                    values_target_env,
-                    values_target_family,
-                    values_target_os,
-                    values_target_pointer_width,
-                    values_target_vendor,
-                ] = self
-                    .expecteds
-                    .get_many_mut(VALUES)
-                    .expect("unable to get all the check-cfg values buckets");
+                    Some(values_target_abi),
+                    Some(values_target_arch),
+                    Some(values_target_endian),
+                    Some(values_target_env),
+                    Some(values_target_family),
+                    Some(values_target_os),
+                    Some(values_target_pointer_width),
+                    Some(values_target_vendor),
+                ] = self.expecteds.get_many_mut(VALUES)
+                else {
+                    panic!("unable to get all the check-cfg values buckets");
+                };
 
                 for target in TARGETS
                     .iter()

library/Cargo.lock

@@ -135,9 +135,9 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.14.5"
+version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
+checksum = "1e087f84d4f86bf4b218b927129862374b72199ae7d8657835f1e89000eea4fb"
 dependencies = [
  "allocator-api2",
  "compiler_builtins",

library/std/Cargo.toml

@@ -20,7 +20,7 @@ core = { path = "../core", public = true }
 compiler_builtins = { version = "0.1.130" }
 profiler_builtins = { path = "../profiler_builtins", optional = true }
 unwind = { path = "../unwind" }
-hashbrown = { version = "0.14", default-features = false, features = [
+hashbrown = { version = "0.15", default-features = false, features = [
     'rustc-dep-of-std',
 ] }
 # FIXME(#127890): `object` depends on `memchr`, but `memchr` > v2.5 causes

library/std/src/collections/hash/map.rs

@@ -909,8 +909,11 @@ where
     /// Attempts to get mutable references to `N` values in the map at once.
     ///
     /// Returns an array of length `N` with the results of each query. For soundness, at most one
-    /// mutable reference will be returned to any value. `None` will be returned if any of the
-    /// keys are duplicates or missing.
+    /// mutable reference will be returned to any value. `None` will be used if the key is missing.
+    ///
+    /// # Panics
+    ///
+    /// Panics if any keys are overlapping.
     ///
     /// # Examples
     ///
@@ -924,35 +927,55 @@ where
     /// libraries.insert("Herzogin-Anna-Amalia-Bibliothek".to_string(), 1691);
     /// libraries.insert("Library of Congress".to_string(), 1800);
     ///
+    /// // Get Athenæum and Bodleian Library
+    /// let [Some(a), Some(b)] = libraries.get_many_mut([
+    ///     "Athenæum",
+    ///     "Bodleian Library",
+    /// ]) else { panic!() };
+    ///
+    /// // Assert values of Athenæum and Library of Congress
     /// let got = libraries.get_many_mut([
     ///     "Athenæum",
     ///     "Library of Congress",
     /// ]);
     /// assert_eq!(
     ///     got,
-    ///     Some([
-    ///         &mut 1807,
-    ///         &mut 1800,
-    ///     ]),
+    ///     [
+    ///         Some(&mut 1807),
+    ///         Some(&mut 1800),
+    ///     ],
     /// );
     ///
     /// // Missing keys result in None
     /// let got = libraries.get_many_mut([
     ///     "Athenæum",
     ///     "New York Public Library",
     /// ]);
-    /// assert_eq!(got, None);
+    /// assert_eq!(
+    ///     got,
+    ///     [
+    ///         Some(&mut 1807),
+    ///         None
+    ///     ]
+    /// );
+    /// ```
+    ///
+    /// ```should_panic
+    /// #![feature(map_many_mut)]
+    /// use std::collections::HashMap;
     ///
-    /// // Duplicate keys result in None
+    /// let mut libraries = HashMap::new();
+    /// libraries.insert("Athenæum".to_string(), 1807);
+    ///
+    /// // Duplicate keys panic!
     /// let got = libraries.get_many_mut([
     ///     "Athenæum",
     ///     "Athenæum",
     /// ]);
-    /// assert_eq!(got, None);
     /// ```
     #[inline]
     #[unstable(feature = "map_many_mut", issue = "97601")]
-    pub fn get_many_mut<Q: ?Sized, const N: usize>(&mut self, ks: [&Q; N]) -> Option<[&'_ mut V; N]>
+    pub fn get_many_mut<Q: ?Sized, const N: usize>(&mut self, ks: [&Q; N]) -> [Option<&'_ mut V>; N]
     where
         K: Borrow<Q>,
         Q: Hash + Eq,
@@ -963,10 +986,10 @@ where
     /// Attempts to get mutable references to `N` values in the map at once, without validating that
     /// the values are unique.
     ///
-    /// Returns an array of length `N` with the results of each query. `None` will be returned if
-    /// any of the keys are missing.
+    /// Returns an array of length `N` with the results of each query. `None` will be used if
+    /// the key is missing.
     ///
-    /// For a safe alternative see [`get_many_mut`](Self::get_many_mut).
+    /// For a safe alternative see [`get_many_mut`](`HashMap::get_many_mut`).
     ///
     /// # Safety
     ///
@@ -987,31 +1010,39 @@ where
     /// libraries.insert("Herzogin-Anna-Amalia-Bibliothek".to_string(), 1691);
     /// libraries.insert("Library of Congress".to_string(), 1800);
     ///
-    /// let got = libraries.get_many_mut([
+    /// // SAFETY: The keys do not overlap.
+    /// let [Some(a), Some(b)] = (unsafe { libraries.get_many_unchecked_mut([
+    ///     "Athenæum",
+    ///     "Bodleian Library",
+    /// ]) }) else { panic!() };
+    ///
+    /// // SAFETY: The keys do not overlap.
+    /// let got = unsafe { libraries.get_many_unchecked_mut([
     ///     "Athenæum",
     ///     "Library of Congress",
-    /// ]);
+    /// ]) };
     /// assert_eq!(
     ///     got,
-    ///     Some([
-    ///         &mut 1807,
-    ///         &mut 1800,
-    ///     ]),
+    ///     [
+    ///         Some(&mut 1807),
+    ///         Some(&mut 1800),
+    ///     ],
     /// );
     ///
-    /// // Missing keys result in None
-    /// let got = libraries.get_many_mut([
+    /// // SAFETY: The keys do not overlap.
+    /// let got = unsafe { libraries.get_many_unchecked_mut([
     ///     "Athenæum",
     ///     "New York Public Library",
-    /// ]);
-    /// assert_eq!(got, None);
+    /// ]) };
+    /// // Missing keys result in None
+    /// assert_eq!(got, [Some(&mut 1807), None]);
     /// ```
     #[inline]
     #[unstable(feature = "map_many_mut", issue = "97601")]
     pub unsafe fn get_many_unchecked_mut<Q: ?Sized, const N: usize>(
         &mut self,
         ks: [&Q; N],
-    ) -> Option<[&'_ mut V; N]>
+    ) -> [Option<&'_ mut V>; N]
     where
         K: Borrow<Q>,
         Q: Hash + Eq,
@@ -2978,64 +3009,6 @@ impl<'a, K, V> OccupiedEntry<'a, K, V> {
     pub fn remove(self) -> V {
         self.base.remove()
     }
-
-    /// Replaces the entry, returning the old key and value. The new key in the hash map will be
-    /// the key used to create this entry.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(map_entry_replace)]
-    /// use std::collections::hash_map::{Entry, HashMap};
-    /// use std::rc::Rc;
-    ///
-    /// let mut map: HashMap<Rc<String>, u32> = HashMap::new();
-    /// map.insert(Rc::new("Stringthing".to_string()), 15);
-    ///
-    /// let my_key = Rc::new("Stringthing".to_string());
-    ///
-    /// if let Entry::Occupied(entry) = map.entry(my_key) {
-    ///     // Also replace the key with a handle to our other key.
-    ///     let (old_key, old_value): (Rc<String>, u32) = entry.replace_entry(16);
-    /// }
-    ///
-    /// ```
-    #[inline]
-    #[unstable(feature = "map_entry_replace", issue = "44286")]
-    pub fn replace_entry(self, value: V) -> (K, V) {
-        self.base.replace_entry(value)
-    }
-
-    /// Replaces the key in the hash map with the key used to create this entry.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(map_entry_replace)]
-    /// use std::collections::hash_map::{Entry, HashMap};
-    /// use std::rc::Rc;
-    ///
-    /// let mut map: HashMap<Rc<String>, u32> = HashMap::new();
-    /// let known_strings: Vec<Rc<String>> = Vec::new();
-    ///
-    /// // Initialise known strings, run program, etc.
-    ///
-    /// reclaim_memory(&mut map, &known_strings);
-    ///
-    /// fn reclaim_memory(map: &mut HashMap<Rc<String>, u32>, known_strings: &[Rc<String>] ) {
-    ///     for s in known_strings {
-    ///         if let Entry::Occupied(entry) = map.entry(Rc::clone(s)) {
-    ///             // Replaces the entry's key with our version of it in `known_strings`.
-    ///             entry.replace_key();
-    ///         }
-    ///     }
-    /// }
-    /// ```
-    #[inline]
-    #[unstable(feature = "map_entry_replace", issue = "44286")]
-    pub fn replace_key(self) -> K {
-        self.base.replace_key()
-    }
 }
 
 impl<'a, K: 'a, V: 'a> VacantEntry<'a, K, V> {

library/std/src/collections/hash/set.rs

@@ -724,38 +724,6 @@ where
         self.base.get_or_insert(value)
     }
 
-    /// Inserts an owned copy of the given `value` into the set if it is not
-    /// present, then returns a reference to the value in the set.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(hash_set_entry)]
-    ///
-    /// use std::collections::HashSet;
-    ///
-    /// let mut set: HashSet<String> = ["cat", "dog", "horse"]
-    ///     .iter().map(|&pet| pet.to_owned()).collect();
-    ///
-    /// assert_eq!(set.len(), 3);
-    /// for &pet in &["cat", "dog", "fish"] {
-    ///     let value = set.get_or_insert_owned(pet);
-    ///     assert_eq!(value, pet);
-    /// }
-    /// assert_eq!(set.len(), 4); // a new "fish" was inserted
-    /// ```
-    #[inline]
-    #[unstable(feature = "hash_set_entry", issue = "60896")]
-    pub fn get_or_insert_owned<Q: ?Sized>(&mut self, value: &Q) -> &T
-    where
-        T: Borrow<Q>,
-        Q: Hash + Eq + ToOwned<Owned = T>,
-    {
-        // Although the raw entry gives us `&mut T`, we only return `&T` to be consistent with
-        // `get`. Key mutation is "raw" because you're not supposed to affect `Eq` or `Hash`.
-        self.base.get_or_insert_owned(value)
-    }
-
     /// Inserts a value computed from `f` into the set if the given `value` is
     /// not present, then returns a reference to the value in the set.
     ///