Auto merge of #73115 - RalfJung:rollup-jecowhz, r=RalfJung

Rollup of 10 pull requests

Successful merges:

 - #72026 (Update annotate-snippets-rs to 0.8.0)
 - #72583 (impl AsRef<[T]> for vec::IntoIter<T>)
 - #72615 (Fix documentation example for gcov profiling)
 - #72761 (Added the documentation for the 'use' keyword)
 - #72799 (Add `-Z span-debug` to allow for easier debugging of proc macros)
 - #72811 (Liballoc impl)
 - #72963 (Cstring `from_raw` and `into_raw` safety precisions)
 - #73001 (Free `default()` forwarding to `Default::default()`)
 - #73075 (Add comments to `Resolve::get_module`)
 - #73092 (Clean up E0646)

Failed merges:

r? @ghost

1 files changed, 23 insertions, 16 deletions

diff --git a/src/liballoc/vec.rs b/src/liballoc/vec.rs
index 96923ea47f3..af943ecfd48 100644
--- a/src/liballoc/vec.rs
+++ b/src/liballoc/vec.rs
@@ -1906,6 +1906,22 @@ unsafe impl<T: ?Sized> IsZero for Option<Box<T>> {
 ////////////////////////////////////////////////////////////////////////////////
 
 #[stable(feature = "rust1", since = "1.0.0")]
+impl<T> ops::Deref for Vec<T> {
+    type Target = [T];
+
+    fn deref(&self) -> &[T] {
+        unsafe { slice::from_raw_parts(self.as_ptr(), self.len) }
+    }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl<T> ops::DerefMut for Vec<T> {
+    fn deref_mut(&mut self) -> &mut [T] {
+        unsafe { slice::from_raw_parts_mut(self.as_mut_ptr(), self.len) }
+    }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
 impl<T: Clone> Clone for Vec<T> {
     #[cfg(not(test))]
     fn clone(&self) -> Vec<T> {
@@ -1961,22 +1977,6 @@ impl<T, I: SliceIndex<[T]>> IndexMut<I> for Vec<T> {
 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
-impl<T> ops::Deref for Vec<T> {
-    type Target = [T];
-
-    fn deref(&self) -> &[T] {
-        unsafe { slice::from_raw_parts(self.as_ptr(), self.len) }
-    }
-}
-
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> ops::DerefMut for Vec<T> {
-    fn deref_mut(&mut self) -> &mut [T] {
-        unsafe { slice::from_raw_parts_mut(self.as_mut_ptr(), self.len) }
-    }
-}
-
-#[stable(feature = "rust1", since = "1.0.0")]
 impl<T> FromIterator<T> for Vec<T> {
     #[inline]
     fn from_iter<I: IntoIterator<Item = T>>(iter: I) -> Vec<T> {
@@ -2628,6 +2628,13 @@ impl<T> IntoIter<T> {
     }
 }
 
+#[stable(feature = "vec_intoiter_as_ref", since = "1.46.0")]
+impl<T> AsRef<[T]> for IntoIter<T> {
+    fn as_ref(&self) -> &[T] {
+        self.as_slice()
+    }
+}
+
 #[stable(feature = "rust1", since = "1.0.0")]
 unsafe impl<T: Send> Send for IntoIter<T> {}
 #[stable(feature = "rust1", since = "1.0.0")]