syntax: Use the new `for` protocol

1 files changed, 9 insertions, 0 deletions

diff --git a/src/libsyntax/ast_util.rs b/src/libsyntax/ast_util.rs
index 77277dea814..ceff868d11f 100644
--- a/src/libsyntax/ast_util.rs
+++ b/src/libsyntax/ast_util.rs
@@ -191,12 +191,21 @@ pub fn is_call_expr(e: @expr) -> bool {
 }
 
 // This makes def_id hashable
+#[cfg(stage0)]
 impl to_bytes::IterBytes for def_id {
     #[inline(always)]
     fn iter_bytes(&self, lsb0: bool, f: to_bytes::Cb) {
         to_bytes::iter_bytes_2(&self.crate, &self.node, lsb0, f);
     }
 }
+// This makes def_id hashable
+#[cfg(not(stage0))]
+impl to_bytes::IterBytes for def_id {
+    #[inline(always)]
+    fn iter_bytes(&self, lsb0: bool, f: to_bytes::Cb) -> bool {
+        to_bytes::iter_bytes_2(&self.crate, &self.node, lsb0, f)
+    }
+}
 
 pub fn block_from_expr(e: @expr) -> blk {
     let blk_ = default_block(~[], option::Some::<@expr>(e), e.id);