diff options
| -rw-r--r-- | library/core/src/alloc/mod.rs | 1 | ||||
| -rw-r--r-- | library/core/src/lib.rs | 1 | ||||
| -rw-r--r-- | library/core/src/ops/function.rs | 3 |
3 files changed, 5 insertions, 0 deletions
diff --git a/library/core/src/alloc/mod.rs b/library/core/src/alloc/mod.rs index 94efa76664f..61553157478 100644 --- a/library/core/src/alloc/mod.rs +++ b/library/core/src/alloc/mod.rs @@ -107,6 +107,7 @@ impl fmt::Display for AllocError { /// /// [*currently allocated*]: #currently-allocated-memory #[unstable(feature = "allocator_api", issue = "32838")] +#[const_trait] pub unsafe trait Allocator { /// Attempts to allocate a block of memory. /// diff --git a/library/core/src/lib.rs b/library/core/src/lib.rs index 5621d15c1cd..593835c3724 100644 --- a/library/core/src/lib.rs +++ b/library/core/src/lib.rs @@ -140,6 +140,7 @@ #![feature(const_str_from_utf8_unchecked_mut)] #![feature(const_swap)] #![feature(const_trait_impl)] +#![feature(const_try)] #![feature(const_type_id)] #![feature(const_type_name)] #![feature(const_default_impls)] diff --git a/library/core/src/ops/function.rs b/library/core/src/ops/function.rs index 8fdf22cf6f2..2e0a752c815 100644 --- a/library/core/src/ops/function.rs +++ b/library/core/src/ops/function.rs @@ -71,6 +71,7 @@ )] #[fundamental] // so that regex can rely that `&str: !FnMut` #[must_use = "closures are lazy and do nothing unless called"] +#[cfg_attr(not(bootstrap), const_trait)] pub trait Fn<Args>: FnMut<Args> { /// Performs the call operation. #[unstable(feature = "fn_traits", issue = "29625")] @@ -158,6 +159,7 @@ pub trait Fn<Args>: FnMut<Args> { )] #[fundamental] // so that regex can rely that `&str: !FnMut` #[must_use = "closures are lazy and do nothing unless called"] +#[cfg_attr(not(bootstrap), const_trait)] pub trait FnMut<Args>: FnOnce<Args> { /// Performs the call operation. #[unstable(feature = "fn_traits", issue = "29625")] @@ -237,6 +239,7 @@ pub trait FnMut<Args>: FnOnce<Args> { )] #[fundamental] // so that regex can rely that `&str: !FnMut` #[must_use = "closures are lazy and do nothing unless called"] +#[cfg_attr(not(bootstrap), const_trait)] pub trait FnOnce<Args> { /// The returned type after the call operator is used. #[lang = "fn_once_output"] |