Update hashbrown to version 0.15, with changes that were blocked by that release

Author: clarfonthey

compiler/rustc_session/src/config/cfg.rs

@@ -413,7 +413,7 @@ impl CheckCfg {
                 ] = self
                     .expecteds
                     .get_many_mut(VALUES)
-                    .expect("unable to get all the check-cfg values buckets");
+                    .map(|x| x.expect("unable to get all the check-cfg values buckets"));
 
                 for target in TARGETS
                     .iter()

library/Cargo.lock

@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "addr2line"
@@ -42,9 +42,9 @@ checksum = "5c6cb57a04249c6480766f7f7cef5467412af1490f8d1e243141daddada3264f"
 
 [[package]]
 name = "cc"
-version = "1.1.22"
+version = "1.1.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9540e661f81799159abee814118cc139a2004b3a3aa3ea37724a1b66530b90e0"
+checksum = "812acba72f0a070b003d3697490d2b55b837230ae7c6c6497f05cc2ddbb8d938"
 dependencies = [
  "shlex",
 ]
@@ -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

@@ -952,7 +952,7 @@ where
     /// ```
     #[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,
@@ -1011,7 +1011,7 @@ where
     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,
@@ -1407,6 +1407,14 @@ impl<K, V> Clone for Iter<'_, K, V> {
     }
 }
 
+#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")]
+impl<K, V> Default for Iter<'_, K, V> {
+    #[inline]
+    fn default() -> Self {
+        Iter { base: Default::default() }
+    }
+}
+
 #[stable(feature = "std_debug", since = "1.16.0")]
 impl<K: Debug, V: Debug> fmt::Debug for Iter<'_, K, V> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
@@ -1445,6 +1453,14 @@ impl<'a, K, V> IterMut<'a, K, V> {
     }
 }
 
+#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")]
+impl<K, V> Default for IterMut<'_, K, V> {
+    #[inline]
+    fn default() -> Self {
+        IterMut { base: Default::default() }
+    }
+}
+
 /// An owning iterator over the entries of a `HashMap`.
 ///
 /// This `struct` is created by the [`into_iter`] method on [`HashMap`]
@@ -1475,6 +1491,14 @@ impl<K, V> IntoIter<K, V> {
     }
 }
 
+#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")]
+impl<K, V> Default for IntoIter<K, V> {
+    #[inline]
+    fn default() -> Self {
+        IntoIter { base: Default::default() }
+    }
+}
+
 /// An iterator over the keys of a `HashMap`.
 ///
 /// This `struct` is created by the [`keys`] method on [`HashMap`]. See its
@@ -1507,6 +1531,14 @@ impl<K, V> Clone for Keys<'_, K, V> {
     }
 }
 
+#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")]
+impl<K, V> Default for Keys<'_, K, V> {
+    #[inline]
+    fn default() -> Self {
+        Keys { inner: Default::default() }
+    }
+}
+
 #[stable(feature = "std_debug", since = "1.16.0")]
 impl<K: Debug, V> fmt::Debug for Keys<'_, K, V> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
@@ -1546,6 +1578,14 @@ impl<K, V> Clone for Values<'_, K, V> {
     }
 }
 
+#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")]
+impl<K, V> Default for Values<'_, K, V> {
+    #[inline]
+    fn default() -> Self {
+        Values { inner: Default::default() }
+    }
+}
+
 #[stable(feature = "std_debug", since = "1.16.0")]
 impl<K, V: Debug> fmt::Debug for Values<'_, K, V> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
@@ -1634,6 +1674,14 @@ pub struct ValuesMut<'a, K: 'a, V: 'a> {
     inner: IterMut<'a, K, V>,
 }
 
+#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")]
+impl<K, V> Default for ValuesMut<'_, K, V> {
+    #[inline]
+    fn default() -> Self {
+        ValuesMut { inner: Default::default() }
+    }
+}
+
 /// An owning iterator over the keys of a `HashMap`.
 ///
 /// This `struct` is created by the [`into_keys`] method on [`HashMap`].
@@ -1656,6 +1704,14 @@ pub struct IntoKeys<K, V> {
     inner: IntoIter<K, V>,
 }
 
+#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")]
+impl<K, V> Default for IntoKeys<K, V> {
+    #[inline]
+    fn default() -> Self {
+        IntoKeys { inner: Default::default() }
+    }
+}
+
 /// An owning iterator over the values of a `HashMap`.
 ///
 /// This `struct` is created by the [`into_values`] method on [`HashMap`].
@@ -1678,6 +1734,14 @@ pub struct IntoValues<K, V> {
     inner: IntoIter<K, V>,
 }
 
+#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")]
+impl<K, V> Default for IntoValues<K, V> {
+    #[inline]
+    fn default() -> Self {
+        IntoValues { inner: Default::default() }
+    }
+}
+
 /// A builder for computing where in a HashMap a key-value pair would be stored.
 ///
 /// See the [`HashMap::raw_entry_mut`] docs for usage examples.
@@ -2978,64 +3042,6 @@ 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.
     ///
@@ -1276,6 +1244,14 @@ pub struct Iter<'a, K: 'a> {
     base: base::Iter<'a, K>,
 }
 
+#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")]
+impl<K> Default for Iter<'_, K> {
+    #[inline]
+    fn default() -> Self {
+        Iter { base: Default::default() }
+    }
+}
+
 /// An owning iterator over the items of a `HashSet`.
 ///
 /// This `struct` is created by the [`into_iter`] method on [`HashSet`]
@@ -1297,6 +1273,14 @@ pub struct IntoIter<K> {
     base: base::IntoIter<K>,
 }
 
+#[stable(feature = "default_iters_hash", since = "CURRENT_RUSTC_VERSION")]
+impl<K> Default for IntoIter<K> {
+    #[inline]
+    fn default() -> Self {
+        IntoIter { base: Default::default() }
+    }
+}
+
 /// A draining iterator over the items of a `HashSet`.
 ///
 /// This `struct` is created by the [`drain`] method on [`HashSet`].