commit 3182f73e8dcce702bbfd330a28c9a35610d0af8e
author Tyler Mandry <tmandry@gmail.com> Tue Oct 15 16:08:00 2019 -0700
committer GitHub <noreply@github.com> Tue Oct 15 16:08:00 2019 -0700
tree 0bfed6eb4c88f90e5fb9d035e08890279a903b0f
parent ef5420301d4b9e03d9b845b82eadfda8e7398f83
parent fa3a4aeae5f3a4c403bf07038c56e74df3d9df70

Rollup merge of #65444 - spastorino:as-ref-for-list, r=Mark-Simulacrum

Implement AsRef<[T]> for List<T>

r? @Mark-Simulacrum

src/librustc/ty/mod.rs

diff --git a/src/librustc/ty/mod.rs b/src/librustc/ty/mod.rs
index 00b5fa2..65aea7b 100644
--- a/src/librustc/ty/mod.rs
+++ b/src/librustc/ty/mod.rs
@@ -701,6 +701,13 @@
     type Target = [T];
     #[inline(always)]
     fn deref(&self) -> &[T] {
+        self.as_ref()
+    }
+}
+
+impl<T> AsRef<[T]> for List<T> {
+    #[inline(always)]
+    fn as_ref(&self) -> &[T] {
         unsafe {
             slice::from_raw_parts(self.data.as_ptr(), self.len)
         }