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-rw-r--r--src/libsyntax/ext/derive.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libsyntax/ext/derive.rs b/src/libsyntax/ext/derive.rs
index 38715f7275d..2e70962cad6 100644
--- a/src/libsyntax/ext/derive.rs
+++ b/src/libsyntax/ext/derive.rs
@@ -68,7 +68,7 @@ pub fn add_derived_markers<T>(cx: &mut ExtCtxt, span: Span, traits: &[ast::Path]
         },
     });
 
-    let span = Span { ctxt: cx.backtrace(), ..span };
+    let span = span.with_ctxt(cx.backtrace());
     item.map_attrs(|mut attrs| {
         if names.contains(&Symbol::intern("Eq")) && names.contains(&Symbol::intern("PartialEq")) {
             let meta = cx.meta_word(span, Symbol::intern("structural_match"));