auto merge of #6223 : alexcrichton/rust/issue-6183, r=pcwalton

Closes #6183.

The first commit changes the compiler's method of treating a `for` loop, and all the remaining commits are just dealing with the fallout.

The biggest fallout was the `IterBytes` trait, although it's really a whole lot nicer now because all of the `iter_bytes_XX` methods are just and-ed together. Sadly there was a huge amount of stuff that's `cfg(stage0)` gated, but whoever lands the next snapshot is going to have a lot of fun deleting all this code!

1 files changed, 7 insertions, 0 deletions

diff --git a/src/libsyntax/parse/token.rs b/src/libsyntax/parse/token.rs
index 43745bce1bf..5688678b06a 100644
--- a/src/libsyntax/parse/token.rs
+++ b/src/libsyntax/parse/token.rs
@@ -355,11 +355,18 @@ impl<'self> Equiv<@~str> for StringRef<'self> {
     fn equiv(&self, other: &@~str) -> bool { str::eq_slice(**self, **other) }
 }
 
+#[cfg(stage0)]
 impl<'self> to_bytes::IterBytes for StringRef<'self> {
     fn iter_bytes(&self, lsb0: bool, f: to_bytes::Cb) {
         (**self).iter_bytes(lsb0, f);
     }
 }
+#[cfg(not(stage0))]
+impl<'self> to_bytes::IterBytes for StringRef<'self> {
+    fn iter_bytes(&self, lsb0: bool, f: to_bytes::Cb) -> bool {
+        (**self).iter_bytes(lsb0, f)
+    }
+}
 
 /**
  * Maps a token to a record specifying the corresponding binary