Add and fix more tests

src/libcore/result.rs

@@ -448,7 +448,8 @@ pub fn as_mut_slice(&mut self) -> &mut [T] {
     /// ```
     /// use std::old_io::IoResult;
     ///
-    /// let mut buffer = &mut b"1\n2\n3\n4\n";
+    /// let mut buffer: &[u8] = b"1\n2\n3\n4\n";
+    /// let mut buffer = &mut buffer;
     ///
     /// let mut sum = 0;
     ///

src/libstd/old_path/mod.rs

@@ -311,7 +311,7 @@ fn dirname_str<'a>(&'a self) -> Option<&'a str> {
     /// # #[cfg(windows)] fn foo() {}
     /// # #[cfg(unix)] fn foo() {
     /// let p = Path::new("abc/def/ghi");
-    /// assert_eq!(p.filename(), Some(b"ghi"));
+    /// assert_eq!(p.filename(), Some(&b"ghi"[..]));
     /// # }
     /// ```
     fn filename<'a>(&'a self) -> Option<&'a [u8]>;
@@ -345,7 +345,7 @@ fn filename_str<'a>(&'a self) -> Option<&'a str> {
     /// # #[cfg(windows)] fn foo() {}
     /// # #[cfg(unix)] fn foo() {
     /// let p = Path::new("/abc/def.txt");
-    /// assert_eq!(p.filestem(), Some(b"def"));
+    /// assert_eq!(p.filestem(), Some(&b"def"[..]));
     /// # }
     /// ```
     fn filestem<'a>(&'a self) -> Option<&'a [u8]> {
@@ -392,7 +392,7 @@ fn filestem_str<'a>(&'a self) -> Option<&'a str> {
     /// # #[cfg(windows)] fn foo() {}
     /// # #[cfg(unix)] fn foo() {
     /// let p = Path::new("abc/def.txt");
-    /// assert_eq!(p.extension(), Some(b"txt"));
+    /// assert_eq!(p.extension(), Some(&b"txt"[..]));
     /// # }
     /// ```
     fn extension<'a>(&'a self) -> Option<&'a [u8]> {

src/test/run-pass/issue-17233.rs

+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+const X1: &'static [u8] = &[b'1'];
+const X2: &'static [u8] = b"1";
+const X3: &'static [u8; 1] = &[b'1'];
+const X4: &'static [u8; 1] = b"1";
+
+static Y1: u8 = X1[0];
+static Y2: u8 = X2[0];
+static Y3: u8 = X3[0];
+static Y4: u8 = X4[0];
+
+fn main() {
+    assert_eq!(Y1, Y2);
+    assert_eq!(Y1, Y3);
+    assert_eq!(Y1, Y4);
+}