Hygienize `librustc_resolve`.

[rust.git] / src / libsyntax_ext / deriving / mod.rs

diff --git a/src/libsyntax_ext/deriving/mod.rs b/src/libsyntax_ext/deriving/mod.rs
index 31c7cc33676776487a41e6247add158c0edf673a..00dcfc7a587069a2294d750d2a92a2a2ecba14ae 100644 (file)
--- a/src/libsyntax_ext/deriving/mod.rs
+++ b/src/libsyntax_ext/deriving/mod.rs
@@ -162,7 +162,7 @@ fn call_intrinsic(cx: &ExtCtxt,
     } else { // Avoid instability errors with user defined curstom derives, cc #36316
         let mut info = cx.current_expansion.mark.expn_info().unwrap();
         info.callee.allow_internal_unstable = true;
-        let mark = Mark::fresh();
+        let mark = Mark::fresh(Mark::root());
         mark.set_expn_info(info);
         span.ctxt = SyntaxContext::empty().apply_mark(mark);
     }