Auto merge of #23934 - lfairy:write-no-deref, r=alexcrichton

bors · bors · commit 82dcec7ee4a8 · 2015-04-03T07:13:51.000Z
This means passing in e.g. a `Vec<u8>` or `String` will work as intended, rather than deref-ing to `&mut [u8]` or `&mut str`. [breaking-change] Closes #23768
diff --git a/src/libcore/macros.rs b/src/libcore/macros.rs
@@ -182,7 +182,7 @@ macro_rules! try {
 /// ```
 #[macro_export]
 macro_rules! write {
-    ($dst:expr, $($arg:tt)*) => ((&mut *$dst).write_fmt(format_args!($($arg)*)))
+    ($dst:expr, $($arg:tt)*) => ($dst.write_fmt(format_args!($($arg)*)))
 }
 
 /// Equivalent to the `write!` macro, except that a newline is appended after

Original file line number	Diff line number	Diff line change
`@@ -182,7 +182,7 @@ macro_rules! try {`
`182`	`182`	/// ```
`183`	`183`	`#[macro_export]`
`184`	`184`	`macro_rules! write {`
`185`		`- ($dst:expr, $($arg:tt)) => ((&mut $dst).write_fmt(format_args!($($arg)*)))`
	`185`	`+ ($dst:expr, $($arg:tt)) => ($dst.write_fmt(format_args!($($arg))))`
`186`	`186`	`}`
`187`	`187`
`188`	`188`	/// Equivalent to the `write!` macro, except that a newline is appended after