Replace dummy spans with empty spans

1 files changed, 2 insertions, 2 deletions

diff --git a/src/librustc_allocator/expand.rs b/src/librustc_allocator/expand.rs
index 951c2280f76..26a7f50b997 100644
--- a/src/librustc_allocator/expand.rs
+++ b/src/librustc_allocator/expand.rs
@@ -15,7 +15,7 @@ use syntax::ast::{Crate, Attribute, LitKind, StrStyle, ExprKind};
 use syntax::ast::{Unsafety, Constness, Generics, Mutability, Ty, Mac, Arg};
 use syntax::ast::{self, Ident, Item, ItemKind, TyKind, VisibilityKind, Expr};
 use syntax::attr;
-use syntax::codemap::dummy_spanned;
+use syntax::codemap::{dummy_spanned, respan};
 use syntax::codemap::{ExpnInfo, NameAndSpan, MacroAttribute};
 use syntax::ext::base::ExtCtxt;
 use syntax::ext::base::Resolver;
@@ -97,7 +97,7 @@ impl<'a> Folder for ExpandAllocatorDirectives<'a> {
         ]);
         let mut items = vec![
             f.cx.item_extern_crate(f.span, f.alloc),
-            f.cx.item_use_simple(f.span, dummy_spanned(VisibilityKind::Inherited), super_path),
+            f.cx.item_use_simple(f.span, respan(f.span.empty(), VisibilityKind::Inherited), super_path),
         ];
         for method in ALLOCATOR_METHODS {
             items.push(f.allocator_fn(method));