diff options
| -rw-r--r-- | src/libstd/macros.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstd/macros.rs b/src/libstd/macros.rs index d69789cedaf..26cf8a3199d 100644 --- a/src/libstd/macros.rs +++ b/src/libstd/macros.rs @@ -276,7 +276,7 @@ pub mod builtin { /// // fn concat_idents!(new, fun, name) { } // not usable in this way! /// # } /// ``` - #[stable(feature = "rust1", since = "1.0.0")] + #[unstable(feature = "concat_idents", issue = "29599")] #[macro_export] macro_rules! concat_idents { ($($e:ident),*) => ({ /* compiler built-in */ }) |