syntax: unbox closures used in let bindings

6 files changed, 7 insertions, 7 deletions

diff --git a/src/libsyntax/ext/deriving/default.rs b/src/libsyntax/ext/deriving/default.rs
index b3621490ce3..49bcb26a4c2 100644
--- a/src/libsyntax/ext/deriving/default.rs
+++ b/src/libsyntax/ext/deriving/default.rs
@@ -55,7 +55,7 @@ fn default_substructure(cx: &mut ExtCtxt, trait_span: Span, substr: &Substructur
         cx.ident_of("Default"),
         cx.ident_of("default")
     );
-    let default_call = |span| cx.expr_call_global(span, default_ident.clone(), Vec::new());
+    let default_call = |&: span| cx.expr_call_global(span, default_ident.clone(), Vec::new());
 
     return match *substr.fields {
         StaticStruct(_, ref summary) => {
diff --git a/src/libsyntax/ext/deriving/generic/mod.rs b/src/libsyntax/ext/deriving/generic/mod.rs
index e4e31139d82..9149c20ce1b 100644
--- a/src/libsyntax/ext/deriving/generic/mod.rs
+++ b/src/libsyntax/ext/deriving/generic/mod.rs
@@ -935,7 +935,7 @@ impl<'a> MethodDef<'a> {
         // where each tuple has length = self_args.len()
         let mut match_arms: Vec<ast::Arm> = variants.iter().enumerate()
             .map(|(index, variant)| {
-                let mk_self_pat = |cx: &mut ExtCtxt, self_arg_name: &str| {
+                let mk_self_pat = |&: cx: &mut ExtCtxt, self_arg_name: &str| {
                     let (p, idents) = trait_.create_enum_variant_pattern(cx, type_ident,
                                                                          &**variant,
                                                                          self_arg_name,
diff --git a/src/libsyntax/ext/deriving/hash.rs b/src/libsyntax/ext/deriving/hash.rs
index 72e3b45dc91..9ad0ad16217 100644
--- a/src/libsyntax/ext/deriving/hash.rs
+++ b/src/libsyntax/ext/deriving/hash.rs
@@ -71,7 +71,7 @@ fn hash_substructure(cx: &mut ExtCtxt, trait_span: Span, substr: &Substructure)
         _ => cx.span_bug(trait_span, "incorrect number of arguments in `deriving(Hash)`")
     };
     let hash_ident = substr.method_ident;
-    let call_hash = |span, thing_expr| {
+    let call_hash = |&: span, thing_expr| {
         let expr = cx.expr_method_call(span, thing_expr, hash_ident, vec!(state_expr.clone()));
         cx.stmt_expr(expr)
     };
diff --git a/src/libsyntax/ext/deriving/zero.rs b/src/libsyntax/ext/deriving/zero.rs
index ea32549cad2..73331f06aa4 100644
--- a/src/libsyntax/ext/deriving/zero.rs
+++ b/src/libsyntax/ext/deriving/zero.rs
@@ -71,7 +71,7 @@ fn zero_substructure(cx: &mut ExtCtxt, trait_span: Span, substr: &Substructure)
         cx.ident_of("Zero"),
         cx.ident_of("zero")
     );
-    let zero_call = |span| cx.expr_call_global(span, zero_ident.clone(), Vec::new());
+    let zero_call = |&: span| cx.expr_call_global(span, zero_ident.clone(), Vec::new());
 
     return match *substr.fields {
         StaticStruct(_, ref summary) => {
diff --git a/src/libsyntax/ext/expand.rs b/src/libsyntax/ext/expand.rs
index f9bffcc8974..5de7068563d 100644
--- a/src/libsyntax/ext/expand.rs
+++ b/src/libsyntax/ext/expand.rs
@@ -1660,7 +1660,7 @@ mod test {
             assert!((shouldmatch.len() == 0) ||
                     (varrefs.len() > *shouldmatch.iter().max().unwrap()));
             for (idx,varref) in varrefs.iter().enumerate() {
-                let print_hygiene_debug_info = || {
+                let print_hygiene_debug_info = |&:| {
                     // good lord, you can't make a path with 0 segments, can you?
                     let final_varref_ident = match varref.segments.last() {
                         Some(pathsegment) => pathsegment.identifier,
diff --git a/src/libsyntax/ext/quote.rs b/src/libsyntax/ext/quote.rs
index 368d4fa8447..d87960ebdb8 100644
--- a/src/libsyntax/ext/quote.rs
+++ b/src/libsyntax/ext/quote.rs
@@ -800,11 +800,11 @@ fn expand_parse_call(cx: &ExtCtxt,
                      tts: &[ast::TokenTree]) -> P<ast::Expr> {
     let (cx_expr, tts_expr) = expand_tts(cx, sp, tts);
 
-    let cfg_call = || cx.expr_method_call(
+    let cfg_call = |&:| cx.expr_method_call(
         sp, cx.expr_ident(sp, id_ext("ext_cx")),
         id_ext("cfg"), Vec::new());
 
-    let parse_sess_call = || cx.expr_method_call(
+    let parse_sess_call = |&:| cx.expr_method_call(
         sp, cx.expr_ident(sp, id_ext("ext_cx")),
         id_ext("parse_sess"), Vec::new());