diff options
Diffstat (limited to 'src/libstd')
| -rw-r--r-- | src/libstd/lib.rs | 12 | ||||
| -rw-r--r-- | src/libstd/sync/once.rs | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs index 33bf0d68126..aa1337a9da0 100644 --- a/src/libstd/lib.rs +++ b/src/libstd/lib.rs @@ -292,6 +292,7 @@ #![feature(raw)] #![feature(repr_simd)] #![feature(rustc_attrs)] +#![cfg_attr(not(stage0), feature(rustc_const_unstable))] #![feature(shared)] #![feature(sip_hash_13)] #![feature(slice_bytes)] @@ -315,6 +316,17 @@ #![feature(doc_cfg)] #![cfg_attr(test, feature(update_panic_count))] +#![cfg_attr(not(stage0), feature(const_max_value))] +#![cfg_attr(not(stage0), feature(const_atomic_bool_new))] +#![cfg_attr(not(stage0), feature(const_atomic_isize_new))] +#![cfg_attr(not(stage0), feature(const_atomic_usize_new))] +#![cfg_attr(all(not(stage0), windows), feature(const_atomic_ptr_new))] +#![cfg_attr(not(stage0), feature(const_unsafe_cell_new))] +#![cfg_attr(not(stage0), feature(const_cell_new))] +#![cfg_attr(not(stage0), feature(const_once_new))] +#![cfg_attr(not(stage0), feature(const_ptr_null))] +#![cfg_attr(not(stage0), feature(const_ptr_null_mut))] + #![default_lib_allocator] // Always use alloc_system during stage0 since we don't know if the alloc_* diff --git a/src/libstd/sync/once.rs b/src/libstd/sync/once.rs index 403685a4b8e..015106fc2e5 100644 --- a/src/libstd/sync/once.rs +++ b/src/libstd/sync/once.rs @@ -156,6 +156,7 @@ struct Finish { impl Once { /// Creates a new `Once` value. #[stable(feature = "once_new", since = "1.2.0")] + #[cfg_attr(not(stage0), rustc_const_unstable(feature = "const_once_new"))] pub const fn new() -> Once { Once { state: AtomicUsize::new(INCOMPLETE), |