Auto merge of rust-lang#91825 - matthiaskrgr:rollup-e4s8lwp, r=matthi…

…askrgr

Rollup of 6 pull requests

Successful merges:

 - rust-lang#91746 (Btree: assert more API compatibility)
 - rust-lang#91748 (rustdoc: Add regression test for Iterator as notable trait on &mut T)
 - rust-lang#91811 (bootstrap: Change unwrap() to expect() for WIX path)
 - rust-lang#91814 (doc: fix typo in comments)
 - rust-lang#91815 (better span for unexpected normalization failure in CTFE engine)
 - rust-lang#91817 (rustbot: Add autolabeling for `T-rustdoc`)

Failed merges:

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

compiler/rustc_const_eval/src/interpret/eval_context.rs

@@ -15,7 +15,7 @@ use rustc_middle::ty::{
 use rustc_mir_dataflow::storage::AlwaysLiveLocals;
 use rustc_query_system::ich::StableHashingContext;
 use rustc_session::Limit;
-use rustc_span::{Pos, Span, DUMMY_SP};
+use rustc_span::{Pos, Span};
 use rustc_target::abi::{Align, HasDataLayout, Size, TargetDataLayout};
 
 use super::{
@@ -525,7 +525,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
             .try_subst_mir_and_normalize_erasing_regions(*self.tcx, self.param_env, value)
             .or_else(|e| {
                 self.tcx.sess.delay_span_bug(
-                    DUMMY_SP,
+                    self.cur_span(),
                     format!("failed to normalize {}", e.get_type_for_failure()).as_str(),
                 );
 

compiler/rustc_const_eval/src/interpret/intrinsics.rs

@@ -140,7 +140,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
 
             sym::min_align_of_val | sym::size_of_val => {
                 // Avoid `deref_operand` -- this is not a deref, the ptr does not have to be
-                // dereferencable!
+                // dereferenceable!
                 let place = self.ref_to_mplace(&self.read_immediate(&args[0])?)?;
                 let (size, align) = self
                     .size_and_align_of_mplace(&place)?

compiler/rustc_const_eval/src/interpret/place.rs

@@ -327,7 +327,7 @@ where
         self.memory.get_mut(place.ptr, size, place.align)
     }
 
-    /// Check if this mplace is dereferencable and sufficiently aligned.
+    /// Check if this mplace is dereferenceable and sufficiently aligned.
     fn check_mplace_access(
         &self,
         mplace: MPlaceTy<'tcx, M::PointerTag>,

library/alloc/src/collections/btree/map/tests.rs

@@ -1556,7 +1556,7 @@ fn test_clone_from() {
 }
 
 #[allow(dead_code)]
-fn test_variance() {
+fn assert_covariance() {
     fn map_key<'new>(v: BTreeMap<&'static str, ()>) -> BTreeMap<&'new str, ()> {
         v
     }
@@ -1615,7 +1615,7 @@ fn test_variance() {
 }
 
 #[allow(dead_code)]
-fn test_sync() {
+fn assert_sync() {
     fn map<T: Sync>(v: &BTreeMap<T, T>) -> impl Sync + '_ {
         v
     }
@@ -1684,7 +1684,7 @@ fn test_sync() {
 }
 
 #[allow(dead_code)]
-fn test_send() {
+fn assert_send() {
     fn map<T: Send>(v: BTreeMap<T, T>) -> impl Send {
         v
     }

library/alloc/src/collections/btree/set/tests.rs

@@ -3,6 +3,7 @@ use super::super::testing::rng::DeterministicRng;
 use super::*;
 use crate::vec::Vec;
 use std::cmp::Ordering;
+use std::hash::{Hash, Hasher};
 use std::iter::FromIterator;
 use std::panic::{catch_unwind, AssertUnwindSafe};
 
@@ -513,7 +514,7 @@ fn test_recovery() {
 }
 
 #[allow(dead_code)]
-fn test_variance() {
+fn assert_covariance() {
     fn set<'new>(v: BTreeSet<&'static str>) -> BTreeSet<&'new str> {
         v
     }
@@ -530,7 +531,7 @@ fn test_variance() {
 }
 
 #[allow(dead_code)]
-fn test_sync() {
+fn assert_sync() {
     fn set<T: Sync>(v: &BTreeSet<T>) -> impl Sync + '_ {
         v
     }
@@ -569,7 +570,7 @@ fn test_sync() {
 }
 
 #[allow(dead_code)]
-fn test_send() {
+fn assert_send() {
     fn set<T: Send>(v: BTreeSet<T>) -> impl Send {
         v
     }
@@ -607,6 +608,37 @@ fn test_send() {
     }
 }
 
+#[allow(dead_code)]
+// Check that the member-like functions conditionally provided by #[derive()]
+// are not overriden by genuine member functions with a different signature.
+fn assert_derives() {
+    fn hash<T: Hash, H: Hasher>(v: BTreeSet<T>, state: &mut H) {
+        v.hash(state);
+        // Tested much more thoroughly outside the crate in btree_set_hash.rs
+    }
+    fn eq<T: PartialEq>(v: BTreeSet<T>) {
+        let _ = v.eq(&v);
+    }
+    fn ne<T: PartialEq>(v: BTreeSet<T>) {
+        let _ = v.ne(&v);
+    }
+    fn cmp<T: Ord>(v: BTreeSet<T>) {
+        let _ = v.cmp(&v);
+    }
+    fn min<T: Ord>(v: BTreeSet<T>, w: BTreeSet<T>) {
+        let _ = v.min(w);
+    }
+    fn max<T: Ord>(v: BTreeSet<T>, w: BTreeSet<T>) {
+        let _ = v.max(w);
+    }
+    fn clamp<T: Ord>(v: BTreeSet<T>, w: BTreeSet<T>, x: BTreeSet<T>) {
+        let _ = v.clamp(w, x);
+    }
+    fn partial_cmp<T: PartialOrd>(v: &BTreeSet<T>) {
+        let _ = v.partial_cmp(&v);
+    }
+}
+
 #[test]
 fn test_ord_absence() {
     fn set<K>(mut set: BTreeSet<K>) {

library/alloc/src/collections/vec_deque/iter_mut.rs

@@ -12,7 +12,7 @@ use super::{count, wrap_index, RingSlices};
 /// [`iter_mut`]: super::VecDeque::iter_mut
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct IterMut<'a, T: 'a> {
-    // Internal safety invariant: the entire slice is dereferencable.
+    // Internal safety invariant: the entire slice is dereferenceable.
     ring: *mut [T],
     tail: usize,
     head: usize,
@@ -42,7 +42,7 @@ impl<T: fmt::Debug> fmt::Debug for IterMut<'_, T> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let (front, back) = RingSlices::ring_slices(self.ring, self.head, self.tail);
         // SAFETY: these are the elements we have not handed out yet, so aliasing is fine.
-        // The `IterMut` invariant also ensures everything is dereferencable.
+        // The `IterMut` invariant also ensures everything is dereferenceable.
         let (front, back) = unsafe { (&*front, &*back) };
         f.debug_tuple("IterMut").field(&front).field(&back).finish()
     }
@@ -78,7 +78,7 @@ impl<'a, T> Iterator for IterMut<'a, T> {
     {
         let (front, back) = RingSlices::ring_slices(self.ring, self.head, self.tail);
         // SAFETY: these are the elements we have not handed out yet, so aliasing is fine.
-        // The `IterMut` invariant also ensures everything is dereferencable.
+        // The `IterMut` invariant also ensures everything is dereferenceable.
         let (front, back) = unsafe { (&mut *front, &mut *back) };
         accum = front.iter_mut().fold(accum, &mut f);
         back.iter_mut().fold(accum, &mut f)
@@ -132,7 +132,7 @@ impl<'a, T> DoubleEndedIterator for IterMut<'a, T> {
     {
         let (front, back) = RingSlices::ring_slices(self.ring, self.head, self.tail);
         // SAFETY: these are the elements we have not handed out yet, so aliasing is fine.
-        // The `IterMut` invariant also ensures everything is dereferencable.
+        // The `IterMut` invariant also ensures everything is dereferenceable.
         let (front, back) = unsafe { (&mut *front, &mut *back) };
         accum = back.iter_mut().rfold(accum, &mut f);
         front.iter_mut().rfold(accum, &mut f)

library/alloc/src/collections/vec_deque/mod.rs

@@ -1020,7 +1020,7 @@ impl<T, A: Allocator> VecDeque<T, A> {
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn iter_mut(&mut self) -> IterMut<'_, T> {
         // SAFETY: The internal `IterMut` safety invariant is established because the
-        // `ring` we create is a dereferencable slice for lifetime '_.
+        // `ring` we create is a dereferenceable slice for lifetime '_.
         let ring = ptr::slice_from_raw_parts_mut(self.ptr(), self.cap());
 
         unsafe { IterMut::new(ring, self.tail, self.head, PhantomData) }
@@ -1209,7 +1209,7 @@ impl<T, A: Allocator> VecDeque<T, A> {
         let (tail, head) = self.range_tail_head(range);
 
         // SAFETY: The internal `IterMut` safety invariant is established because the
-        // `ring` we create is a dereferencable slice for lifetime '_.
+        // `ring` we create is a dereferenceable slice for lifetime '_.
         let ring = ptr::slice_from_raw_parts_mut(self.ptr(), self.cap());
 
         unsafe { IterMut::new(ring, tail, head, PhantomData) }

library/alloc/src/rc.rs

@@ -2121,7 +2121,7 @@ impl<T: ?Sized> Weak<T> {
             // a valid payload address, as the payload is at least as aligned as RcBox (usize).
             ptr as *const T
         } else {
-            // SAFETY: if is_dangling returns false, then the pointer is dereferencable.
+            // SAFETY: if is_dangling returns false, then the pointer is dereferenceable.
             // The payload may be dropped at this point, and we have to maintain provenance,
             // so use raw pointer manipulation.
             unsafe { ptr::addr_of_mut!((*ptr).value) }

library/alloc/src/sync.rs

@@ -1743,7 +1743,7 @@ impl<T: ?Sized> Weak<T> {
             // a valid payload address, as the payload is at least as aligned as ArcInner (usize).
             ptr as *const T
         } else {
-            // SAFETY: if is_dangling returns false, then the pointer is dereferencable.
+            // SAFETY: if is_dangling returns false, then the pointer is dereferenceable.
             // The payload may be dropped at this point, and we have to maintain provenance,
             // so use raw pointer manipulation.
             unsafe { ptr::addr_of_mut!((*ptr).data) }

library/core/src/ptr/const_ptr.rs

@@ -119,7 +119,7 @@ impl<T: ?Sized> *const T {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * The pointer must point to an initialized instance of `T`.
     ///
@@ -183,7 +183,7 @@ impl<T: ?Sized> *const T {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * You must enforce Rust's aliasing rules, since the returned lifetime `'a` is
     ///   arbitrarily chosen and does not necessarily reflect the actual lifetime of the data.
@@ -1003,7 +1003,7 @@ impl<T> *const [T] {
     /// Returns a raw pointer to an element or subslice, without doing bounds
     /// checking.
     ///
-    /// Calling this method with an out-of-bounds index or when `self` is not dereferencable
+    /// Calling this method with an out-of-bounds index or when `self` is not dereferenceable
     /// is *[undefined behavior]* even if the resulting pointer is not used.
     ///
     /// [undefined behavior]: https://doc.rust-lang.org/reference/behavior-considered-undefined.html
@@ -1025,7 +1025,7 @@ impl<T> *const [T] {
     where
         I: SliceIndex<[T]>,
     {
-        // SAFETY: the caller ensures that `self` is dereferencable and `index` in-bounds.
+        // SAFETY: the caller ensures that `self` is dereferenceable and `index` in-bounds.
         unsafe { index.get_unchecked(self) }
     }
 

library/core/src/ptr/mut_ptr.rs

@@ -122,7 +122,7 @@ impl<T: ?Sized> *mut T {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * The pointer must point to an initialized instance of `T`.
     ///
@@ -189,7 +189,7 @@ impl<T: ?Sized> *mut T {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * You must enforce Rust's aliasing rules, since the returned lifetime `'a` is
     ///   arbitrarily chosen and does not necessarily reflect the actual lifetime of the data.
@@ -368,7 +368,7 @@ impl<T: ?Sized> *mut T {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * The pointer must point to an initialized instance of `T`.
     ///
@@ -434,7 +434,7 @@ impl<T: ?Sized> *mut T {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * You must enforce Rust's aliasing rules, since the returned lifetime `'a` is
     ///   arbitrarily chosen and does not necessarily reflect the actual lifetime of the data.
@@ -1266,7 +1266,7 @@ impl<T> *mut [T] {
     /// Returns a raw pointer to an element or subslice, without doing bounds
     /// checking.
     ///
-    /// Calling this method with an out-of-bounds index or when `self` is not dereferencable
+    /// Calling this method with an out-of-bounds index or when `self` is not dereferenceable
     /// is *[undefined behavior]* even if the resulting pointer is not used.
     ///
     /// [undefined behavior]: https://doc.rust-lang.org/reference/behavior-considered-undefined.html
@@ -1288,7 +1288,7 @@ impl<T> *mut [T] {
     where
         I: SliceIndex<[T]>,
     {
-        // SAFETY: the caller ensures that `self` is dereferencable and `index` in-bounds.
+        // SAFETY: the caller ensures that `self` is dereferenceable and `index` in-bounds.
         unsafe { index.get_unchecked_mut(self) }
     }
 

library/core/src/ptr/non_null.rs

@@ -109,7 +109,7 @@ impl<T: Sized> NonNull<T> {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * You must enforce Rust's aliasing rules, since the returned lifetime `'a` is
     ///   arbitrarily chosen and does not necessarily reflect the actual lifetime of the data.
@@ -142,7 +142,7 @@ impl<T: Sized> NonNull<T> {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * You must enforce Rust's aliasing rules, since the returned lifetime `'a` is
     ///   arbitrarily chosen and does not necessarily reflect the actual lifetime of the data.
@@ -289,7 +289,7 @@ impl<T: ?Sized> NonNull<T> {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * The pointer must point to an initialized instance of `T`.
     ///
@@ -338,7 +338,7 @@ impl<T: ?Sized> NonNull<T> {
     ///
     /// * The pointer must be properly aligned.
     ///
-    /// * It must be "dereferencable" in the sense defined in [the module documentation].
+    /// * It must be "dereferenceable" in the sense defined in [the module documentation].
     ///
     /// * The pointer must point to an initialized instance of `T`.
     ///
@@ -604,7 +604,7 @@ impl<T> NonNull<[T]> {
     /// Returns a raw pointer to an element or subslice, without doing bounds
     /// checking.
     ///
-    /// Calling this method with an out-of-bounds index or when `self` is not dereferencable
+    /// Calling this method with an out-of-bounds index or when `self` is not dereferenceable
     /// is *[undefined behavior]* even if the resulting pointer is not used.
     ///
     /// [undefined behavior]: https://doc.rust-lang.org/reference/behavior-considered-undefined.html
@@ -628,7 +628,7 @@ impl<T> NonNull<[T]> {
     where
         I: SliceIndex<[T]>,
     {
-        // SAFETY: the caller ensures that `self` is dereferencable and `index` in-bounds.
+        // SAFETY: the caller ensures that `self` is dereferenceable and `index` in-bounds.
         // As a consequence, the resulting pointer cannot be null.
         unsafe { NonNull::new_unchecked(self.as_ptr().get_unchecked_mut(index)) }
     }

library/core/src/slice/mod.rs

@@ -380,7 +380,7 @@ impl<T> [T] {
         I: SliceIndex<Self>,
     {
         // SAFETY: the caller must uphold most of the safety requirements for `get_unchecked`;
-        // the slice is dereferencable because `self` is a safe reference.
+        // the slice is dereferenceable because `self` is a safe reference.
         // The returned pointer is safe because impls of `SliceIndex` have to guarantee that it is.
         unsafe { &*index.get_unchecked(self) }
     }
@@ -416,7 +416,7 @@ impl<T> [T] {
         I: SliceIndex<Self>,
     {
         // SAFETY: the caller must uphold the safety requirements for `get_unchecked_mut`;
-        // the slice is dereferencable because `self` is a safe reference.
+        // the slice is dereferenceable because `self` is a safe reference.
         // The returned pointer is safe because impls of `SliceIndex` have to guarantee that it is.
         unsafe { &mut *index.get_unchecked_mut(self) }
     }