Rename Iterator::get_unchecked -> Iterator::__iterator_get_unchecked

Backport of #77201, manually done because of file renaming.

library/core/src/iter/adapters/fuse.rs

@@ -116,7 +116,7 @@ where
     }
 
     #[inline]
-    unsafe fn get_unchecked(&mut self, idx: usize) -> Self::Item
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> Self::Item
     where
         Self: TrustedRandomAccess,
     {

library/core/src/iter/adapters/mod.rs

@@ -215,7 +215,7 @@ where
         self.it.count()
     }
 
-    unsafe fn get_unchecked(&mut self, idx: usize) -> T
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> T
     where
         Self: TrustedRandomAccess,
     {
@@ -350,7 +350,7 @@ where
         self.it.map(T::clone).fold(init, f)
     }
 
-    unsafe fn get_unchecked(&mut self, idx: usize) -> T
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> T
     where
         Self: TrustedRandomAccess,
     {
@@ -865,7 +865,7 @@ where
         self.iter.fold(init, map_fold(self.f, g))
     }
 
-    unsafe fn get_unchecked(&mut self, idx: usize) -> B
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> B
     where
         Self: TrustedRandomAccess,
     {
@@ -1304,7 +1304,7 @@ where
         self.iter.fold(init, enumerate(self.count, fold))
     }
 
-    unsafe fn get_unchecked(&mut self, idx: usize) -> <Self as Iterator>::Item
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> <Self as Iterator>::Item
     where
         Self: TrustedRandomAccess,
     {

library/core/src/iter/adapters/zip.rs

@@ -59,7 +59,7 @@ where
     }
 
     #[inline]
-    unsafe fn get_unchecked(&mut self, idx: usize) -> Self::Item
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> Self::Item
     where
         Self: TrustedRandomAccess,
     {
@@ -197,12 +197,14 @@ where
             let i = self.index;
             self.index += 1;
             // SAFETY: `i` is smaller than `self.len`, thus smaller than `self.a.len()` and `self.b.len()`
-            unsafe { Some((self.a.get_unchecked(i), self.b.get_unchecked(i))) }
+            unsafe {
+                Some((self.a.__iterator_get_unchecked(i), self.b.__iterator_get_unchecked(i)))
+            }
         } else if A::may_have_side_effect() && self.index < self.a.size() {
             // match the base implementation's potential side effects
             // SAFETY: we just checked that `self.index` < `self.a.len()`
             unsafe {
-                self.a.get_unchecked(self.index);
+                self.a.__iterator_get_unchecked(self.index);
             }
             self.index += 1;
             None
@@ -229,13 +231,13 @@ where
                 // ensures that `end` is smaller than or equal to `self.len`,
                 // so `i` is also smaller than `self.len`.
                 unsafe {
-                    self.a.get_unchecked(i);
+                    self.a.__iterator_get_unchecked(i);
                 }
             }
             if B::may_have_side_effect() {
                 // SAFETY: same as above.
                 unsafe {
-                    self.b.get_unchecked(i);
+                    self.b.__iterator_get_unchecked(i);
                 }
             }
         }
@@ -277,7 +279,9 @@ where
             let i = self.len;
             // SAFETY: `i` is smaller than the previous value of `self.len`,
             // which is also smaller than or equal to `self.a.len()` and `self.b.len()`
-            unsafe { Some((self.a.get_unchecked(i), self.b.get_unchecked(i))) }
+            unsafe {
+                Some((self.a.__iterator_get_unchecked(i), self.b.__iterator_get_unchecked(i)))
+            }
         } else {
             None
         }
@@ -287,7 +291,7 @@ where
     unsafe fn get_unchecked(&mut self, idx: usize) -> <Self as Iterator>::Item {
         // SAFETY: the caller must uphold the contract for
         // `Iterator::get_unchecked`.
-        unsafe { (self.a.get_unchecked(idx), self.b.get_unchecked(idx)) }
+        unsafe { (self.a.__iterator_get_unchecked(idx), self.b.__iterator_get_unchecked(idx)) }
     }
 }
 
@@ -430,6 +434,6 @@ unsafe impl<I: Iterator + TrustedRandomAccess> SpecTrustedRandomAccess for I {
     unsafe fn try_get_unchecked(&mut self, index: usize) -> Self::Item {
         // SAFETY: the caller must uphold the contract for
         // `Iterator::get_unchecked`.
-        unsafe { self.get_unchecked(index) }
+        unsafe { self.__iterator_get_unchecked(index) }
     }
 }

library/core/src/iter/traits/iterator.rs

@@ -3251,7 +3251,7 @@ pub trait Iterator {
     #[inline]
     #[doc(hidden)]
     #[unstable(feature = "trusted_random_access", issue = "none")]
-    unsafe fn get_unchecked(&mut self, _idx: usize) -> Self::Item
+    unsafe fn __iterator_get_unchecked(&mut self, _idx: usize) -> Self::Item
     where
         Self: TrustedRandomAccess,
     {

library/core/src/slice/mod.rs

@@ -3922,7 +3922,7 @@ macro_rules! iterator {
             }
 
             #[doc(hidden)]
-            unsafe fn get_unchecked(&mut self, idx: usize) -> Self::Item {
+            unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> Self::Item {
                 // SAFETY: the caller must guarantee that `i` is in bounds of
                 // the underlying slice, so `i` cannot overflow an `isize`, and
                 // the returned references is guaranteed to refer to an element
@@ -5022,7 +5022,7 @@ impl<'a, T> Iterator for Windows<'a, T> {
     }
 
     #[doc(hidden)]
-    unsafe fn get_unchecked(&mut self, idx: usize) -> Self::Item {
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> Self::Item {
         // SAFETY: since the caller guarantees that `i` is in bounds,
         // which means that `i` cannot overflow an `isize`, and the
         // slice created by `from_raw_parts` is a subslice of `self.v`
@@ -5161,7 +5161,7 @@ impl<'a, T> Iterator for Chunks<'a, T> {
     }
 
     #[doc(hidden)]
-    unsafe fn get_unchecked(&mut self, idx: usize) -> Self::Item {
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> Self::Item {
         let start = idx * self.chunk_size;
         let end = match start.checked_add(self.chunk_size) {
             None => self.v.len(),
@@ -5310,7 +5310,7 @@ impl<'a, T> Iterator for ChunksMut<'a, T> {
     }
 
     #[doc(hidden)]
-    unsafe fn get_unchecked(&mut self, idx: usize) -> Self::Item {
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> Self::Item {
         let start = idx * self.chunk_size;
         let end = match start.checked_add(self.chunk_size) {
             None => self.v.len(),
@@ -5463,7 +5463,7 @@ impl<'a, T> Iterator for ChunksExact<'a, T> {
     }
 
     #[doc(hidden)]
-    unsafe fn get_unchecked(&mut self, idx: usize) -> Self::Item {
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> Self::Item {
         let start = idx * self.chunk_size;
         // SAFETY: mostly identical to `Chunks::get_unchecked`.
         unsafe { from_raw_parts(self.v.as_ptr().add(start), self.chunk_size) }
@@ -5597,7 +5597,7 @@ impl<'a, T> Iterator for ChunksExactMut<'a, T> {
     }
 
     #[doc(hidden)]
-    unsafe fn get_unchecked(&mut self, idx: usize) -> Self::Item {
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> Self::Item {
         let start = idx * self.chunk_size;
         // SAFETY: see comments for `ChunksMut::get_unchecked`.
         unsafe { from_raw_parts_mut(self.v.as_mut_ptr().add(start), self.chunk_size) }
@@ -5723,10 +5723,10 @@ impl<'a, T, const N: usize> Iterator for ArrayChunks<'a, T, N> {
         self.iter.last()
     }
 
-    unsafe fn get_unchecked(&mut self, i: usize) -> &'a [T; N] {
+    unsafe fn __iterator_get_unchecked(&mut self, i: usize) -> &'a [T; N] {
         // SAFETY: The safety guarantees of `get_unchecked` are transferred to
         // the caller.
-        unsafe { self.iter.get_unchecked(i) }
+        unsafe { self.iter.__iterator_get_unchecked(i) }
     }
 }
 
@@ -5853,7 +5853,7 @@ impl<'a, T> Iterator for RChunks<'a, T> {
     }
 
     #[doc(hidden)]
-    unsafe fn get_unchecked(&mut self, idx: usize) -> Self::Item {
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> Self::Item {
         let end = self.v.len() - idx * self.chunk_size;
         let start = match end.checked_sub(self.chunk_size) {
             None => 0,
@@ -5999,7 +5999,7 @@ impl<'a, T> Iterator for RChunksMut<'a, T> {
     }
 
     #[doc(hidden)]
-    unsafe fn get_unchecked(&mut self, idx: usize) -> Self::Item {
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> Self::Item {
         let end = self.v.len() - idx * self.chunk_size;
         let start = match end.checked_sub(self.chunk_size) {
             None => 0,
@@ -6145,7 +6145,7 @@ impl<'a, T> Iterator for RChunksExact<'a, T> {
     }
 
     #[doc(hidden)]
-    unsafe fn get_unchecked(&mut self, idx: usize) -> Self::Item {
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> Self::Item {
         let end = self.v.len() - idx * self.chunk_size;
         let start = end - self.chunk_size;
         // SAFETY:
@@ -6286,7 +6286,7 @@ impl<'a, T> Iterator for RChunksExactMut<'a, T> {
     }
 
     #[doc(hidden)]
-    unsafe fn get_unchecked(&mut self, idx: usize) -> Self::Item {
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> Self::Item {
         let end = self.v.len() - idx * self.chunk_size;
         let start = end - self.chunk_size;
         // SAFETY: see comments for `RChunksMut::get_unchecked`.

library/core/src/str/mod.rs

@@ -824,10 +824,10 @@ impl Iterator for Bytes<'_> {
     }
 
     #[inline]
-    unsafe fn get_unchecked(&mut self, idx: usize) -> u8 {
+    unsafe fn __iterator_get_unchecked(&mut self, idx: usize) -> u8 {
         // SAFETY: the caller must uphold the safety contract
         // for `Iterator::get_unchecked`.
-        unsafe { self.0.get_unchecked(idx) }
+        unsafe { self.0.__iterator_get_unchecked(idx) }
     }
 }