[breaking-change] don't glob export ast::Decl_ variants

src/libsyntax_ext/deriving/debug.rs

@@ -151,6 +151,6 @@ fn stmt_let_undescore(cx: &mut ExtCtxt,
         span: sp,
         attrs: None,
     });
-    let decl = respan(sp, ast::DeclLocal(local));
+    let decl = respan(sp, ast::DeclKind::Local(local));
     P(respan(sp, ast::StmtDecl(P(decl), ast::DUMMY_NODE_ID)))
 }

src/libsyntax_ext/format.rs

@@ -457,7 +457,7 @@ impl<'a, 'b> Context<'a, 'b> {
 
         let name = ecx.ident_of(name);
         let item = ecx.item(sp, name, vec![], st);
-        let decl = respan(sp, ast::DeclItem(item));
+        let decl = respan(sp, ast::DeclKind::Item(item));
 
         // Wrap the declaration in a block so that it forms a single expression.
         ecx.expr_block(ecx.block(sp,