diff options
Diffstat (limited to 'library/proc_macro/src/lib.rs')
| -rw-r--r-- | library/proc_macro/src/lib.rs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/library/proc_macro/src/lib.rs b/library/proc_macro/src/lib.rs index 5f1f7d8cac4..c7f58f36154 100644 --- a/library/proc_macro/src/lib.rs +++ b/library/proc_macro/src/lib.rs @@ -21,7 +21,8 @@ #![feature(rustc_allow_const_fn_unstable)] #![feature(nll)] #![feature(staged_api)] -#![feature(const_fn)] +#![cfg_attr(bootstrap, feature(const_fn))] +#![cfg_attr(not(bootstrap), feature(const_fn_trait_bound))] #![feature(const_fn_fn_ptr_basics)] #![feature(allow_internal_unstable)] #![feature(decl_macro)] |