X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=compiler%2Frustc_builtin_macros%2Fsrc%2Fderive.rs;h=e0fb7affb3498438de838549ceba3624654f3cd6;hb=18d3063350809de08f98fb74479a28d7149a3d14;hp=467ac34ded942f43c6aeb788964413500d8e7778;hpb=8818b00b634ee48e7617d9beb48c4d7bc6967f06;p=rust.git

diff --git a/compiler/rustc_builtin_macros/src/derive.rs b/compiler/rustc_builtin_macros/src/derive.rs
index 467ac34ded9..e0fb7affb34 100644
--- a/compiler/rustc_builtin_macros/src/derive.rs
+++ b/compiler/rustc_builtin_macros/src/derive.rs
@@ -32,7 +32,8 @@ fn expand(
             ecx.resolver.resolve_derives(ecx.current_expansion.id, ecx.force_mode, &|| {
                 let template =
                     AttributeTemplate { list: Some("Trait1, Trait2, ..."), ..Default::default() };
-                let attr = attr::mk_attr_outer(meta_item.clone());
+                let attr =
+                    attr::mk_attr_outer(&sess.parse_sess.attr_id_generator, meta_item.clone());
                 validate_attr::check_builtin_attribute(
                     &sess.parse_sess,
                     &attr,