PathBuf: replace transmuting by accessor functions

2 files changed, 12 insertions, 0 deletions

diff --git a/library/std/src/sys/os_str/bytes.rs b/library/std/src/sys/os_str/bytes.rs
index 4ca3f1cd185..3076e18b237 100644
--- a/library/std/src/sys/os_str/bytes.rs
+++ b/library/std/src/sys/os_str/bytes.rs
@@ -198,6 +198,12 @@ impl Buf {
     pub fn into_rc(&self) -> Rc<Slice> {
         self.as_slice().into_rc()
     }
+
+    /// Part of a hack to make PathBuf::push/pop more efficient.
+    #[inline]
+    pub(crate) fn as_mut_vec_for_path_buf(&mut self) -> &mut Vec<u8> {
+        &mut self.inner
+    }
 }
 
 impl Slice {
diff --git a/library/std/src/sys/os_str/wtf8.rs b/library/std/src/sys/os_str/wtf8.rs
index 352bd735903..b3ceb55802d 100644
--- a/library/std/src/sys/os_str/wtf8.rs
+++ b/library/std/src/sys/os_str/wtf8.rs
@@ -158,6 +158,12 @@ impl Buf {
     pub fn into_rc(&self) -> Rc<Slice> {
         self.as_slice().into_rc()
     }
+
+    /// Part of a hack to make PathBuf::push/pop more efficient.
+    #[inline]
+    pub(crate) fn as_mut_vec_for_path_buf(&mut self) -> &mut Vec<u8> {
+        self.inner.as_mut_vec_for_path_buf()
+    }
 }
 
 impl Slice {