Make `slice::transmute*` private

src/libcollections/slice.rs

@@ -109,7 +109,6 @@ pub use core::slice::{IntSliceExt, SplitMut, ChunksMut, Split};
 pub use core::slice::{SplitN, RSplitN, SplitNMut, RSplitNMut};
 pub use core::slice::{bytes, mut_ref_slice, ref_slice};
 pub use core::slice::{from_raw_parts, from_raw_parts_mut};
-pub use core::slice::{transmute, transmute_mut};
 
 ////////////////////////////////////////////////////////////////////////////////
 // Basic slice extension methods

src/libcore/slice.rs

@@ -1455,8 +1455,7 @@ fn check_types<T,U>() {
 /// This functions panics if the above preconditions about the types are not
 /// met.
 #[inline]
-#[unstable(feature = "slice_transmute", reason = "recent API addition")]
-pub unsafe fn transmute<T,U>(slice: &[T]) -> &[U] {
+unsafe fn transmute<T,U>(slice: &[T]) -> &[U] {
     check_types::<T,U>();
     from_raw_parts(slice.as_ptr() as *const U, slice.len())
 }
@@ -1466,8 +1465,7 @@ pub unsafe fn transmute<T,U>(slice: &[T]) -> &[U] {
 ///
 /// Equivalent of `slice::transmute` for mutable slices.
 #[inline]
-#[unstable(feature = "slice_transmute", reason = "recent API addition")]
-pub unsafe fn transmute_mut<T,U>(slice: &mut [T]) -> &mut [U] {
+unsafe fn transmute_mut<T,U>(slice: &mut [T]) -> &mut [U] {
     check_types::<T,U>();
     from_raw_parts_mut(slice.as_mut_ptr() as *mut U, slice.len())
 }

src/librustc_trans/lib.rs

@@ -25,7 +25,6 @@
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
       html_root_url = "http://doc.rust-lang.org/nightly/")]
 
-#![cfg_attr(not(stage0), feature(slice_transmute))]
 #![feature(box_patterns)]
 #![feature(box_syntax)]
 #![feature(const_fn)]

src/librustc_trans/trans/type_.rs

@@ -59,6 +59,10 @@ impl Type {
         }).expect("non-UTF8 type description from LLVM")
     }
 
+    pub fn to_ref_slice(slice: &[Type]) -> &[TypeRef] {
+        unsafe { mem::transmute(slice) }
+    }
+
     pub fn void(ccx: &CrateContext) -> Type {
         ty!(llvm::LLVMVoidTypeInContext(ccx.llcx()))
     }
@@ -151,45 +155,20 @@ impl Type {
         }
     }
 
-    #[cfg(stage0)]
     pub fn func(args: &[Type], ret: &Type) -> Type {
-        let vec : &[TypeRef] = unsafe { mem::transmute(args) };
-        ty!(llvm::LLVMFunctionType(ret.to_ref(), vec.as_ptr(),
+        let slice: &[TypeRef] = Type::to_ref_slice(args);
+        ty!(llvm::LLVMFunctionType(ret.to_ref(), slice.as_ptr(),
                                    args.len() as c_uint, False))
     }
 
-    #[cfg(not(stage0))]
-    pub fn func(args: &[Type], ret: &Type) -> Type {
-        let vec: &[TypeRef] = unsafe { slice::transmute(args) };
-        ty!(llvm::LLVMFunctionType(ret.to_ref(), vec.as_ptr(),
-                                   args.len() as c_uint, False))
-    }
-
-    #[cfg(stage0)]
     pub fn variadic_func(args: &[Type], ret: &Type) -> Type {
-        let vec : &[TypeRef] = unsafe { mem::transmute(args) };
-        ty!(llvm::LLVMFunctionType(ret.to_ref(), vec.as_ptr(),
+        let slice: &[TypeRef] = Type::to_ref_slice(args);
+        ty!(llvm::LLVMFunctionType(ret.to_ref(), slice.as_ptr(),
                                    args.len() as c_uint, True))
     }
 
-    #[cfg(not(stage0))]
-    pub fn variadic_func(args: &[Type], ret: &Type) -> Type {
-        let vec: &[TypeRef] = unsafe { slice::transmute(args) };
-        ty!(llvm::LLVMFunctionType(ret.to_ref(), vec.as_ptr(),
-                                   args.len() as c_uint, True))
-    }
-
-    #[cfg(stage0)]
     pub fn struct_(ccx: &CrateContext, els: &[Type], packed: bool) -> Type {
-        let els : &[TypeRef] = unsafe { mem::transmute(els) };
-        ty!(llvm::LLVMStructTypeInContext(ccx.llcx(), els.as_ptr(),
-                                          els.len() as c_uint,
-                                          packed as Bool))
-    }
-
-    #[cfg(not(stage0))]
-    pub fn struct_(ccx: &CrateContext, els: &[Type], packed: bool) -> Type {
-        let els : &[TypeRef] = unsafe { slice::transmute(els) };
+        let els: &[TypeRef] = Type::to_ref_slice(els);
         ty!(llvm::LLVMStructTypeInContext(ccx.llcx(), els.as_ptr(),
                                           els.len() as c_uint,
                                           packed as Bool))
@@ -236,20 +215,10 @@ impl Type {
         }
     }
 
-    #[cfg(stage0)]
     pub fn set_struct_body(&mut self, els: &[Type], packed: bool) {
+        let slice: &[TypeRef] = Type::to_ref_slice(els);
         unsafe {
-            let vec : &[TypeRef] = mem::transmute(els);
-            llvm::LLVMStructSetBody(self.to_ref(), vec.as_ptr(),
-                                    els.len() as c_uint, packed as Bool)
-        }
-    }
-
-    #[cfg(not(stage0))]
-    pub fn set_struct_body(&mut self, els: &[Type], packed: bool) {
-        unsafe {
-            let vec: &[TypeRef] = slice::transmute(els);
-            llvm::LLVMStructSetBody(self.to_ref(), vec.as_ptr(),
+            llvm::LLVMStructSetBody(self.to_ref(), slice.as_ptr(),
                                     els.len() as c_uint, packed as Bool)
         }
     }

src/libstd/ffi/c_str.rs

@@ -395,7 +395,7 @@ impl CStr {
     /// > length calculation whenever this method is called.
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn to_bytes_with_nul(&self) -> &[u8] {
-        unsafe { slice::transmute(&self.inner) }
+        unsafe { mem::transmute(&self.inner) }
     }
 
     /// Yields a `&str` slice if the `CStr` contains valid UTF-8.

src/libstd/lib.rs

@@ -234,7 +234,6 @@
 #![feature(reflect_marker)]
 #![feature(slice_bytes)]
 #![feature(slice_patterns)]
-#![feature(slice_transmute)]
 #![feature(staged_api)]
 #![feature(str_as_bytes_mut)]
 #![feature(str_char)]