diff options
Diffstat (limited to 'library/std/src/lib.rs')
| -rw-r--r-- | library/std/src/lib.rs | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs index f111fcb4a47..ab417b6c72f 100644 --- a/library/std/src/lib.rs +++ b/library/std/src/lib.rs @@ -330,6 +330,7 @@ #![feature(bstr)] #![feature(bstr_internals)] #![feature(cast_maybe_uninit)] +#![feature(cfg_select)] #![feature(char_internals)] #![feature(clone_to_uninit)] #![feature(const_cmp)] @@ -737,6 +738,14 @@ pub use core::{ unreachable, write, writeln, }; +// Re-export unstable derive macro defined through core. +#[unstable(feature = "derive_from", issue = "144889")] +/// Unstable module containing the unstable `From` derive macro. +pub mod from { + #[unstable(feature = "derive_from", issue = "144889")] + pub use core::from::From; +} + // Include a number of private modules that exist solely to provide // the rustdoc documentation for primitive types. Using `include!` // because rustdoc only looks for these modules at the crate level. |