auto merge of #9026 : jbclements/rust/let-var-hygiene, r=jbclements

This is a rebase of my approved pull request from ... the end of June? It introduces hygiene for let-bound variables.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/libstd/to_bytes.rs b/src/libstd/to_bytes.rs
index 01f57c231da..e3615b7b7db 100644
--- a/src/libstd/to_bytes.rs
+++ b/src/libstd/to_bytes.rs
@@ -375,3 +375,13 @@ impl<A:IterBytes> ToBytes for A {
         }
     }
 }
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    // just test to see if it compiles:
+    #[test] fn iterbytes_compiles () {
+        takes_iterbytes((3,4,5,false));
+    }
+    fn takes_iterbytes<T : IterBytes>(x : T) {}
+}