Setup alloc::io

Author: bushrat011899

library/alloc/src/io/error.rs

@@ -0,0 +1,4 @@
+#[unstable(feature = "alloc_io", issue = "154046")]
+pub use core::io::ErrorKind;
+#[unstable(feature = "raw_os_error_ty", issue = "107792")]
+pub use core::io::RawOsError;

library/alloc/src/io/mod.rs

@@ -0,0 +1,11 @@
+//! Traits, helpers, and type definitions for core I/O functionality.
+
+mod error;
+
+#[unstable(feature = "core_io_borrowed_buf", issue = "117693")]
+pub use core::io::{BorrowedBuf, BorrowedCursor};
+
+#[unstable(feature = "alloc_io", issue = "154046")]
+pub use self::error::ErrorKind;
+#[unstable(feature = "raw_os_error_ty", issue = "107792")]
+pub use self::error::RawOsError;

library/alloc/src/lib.rs

@@ -111,6 +111,9 @@
 #![feature(const_try)]
 #![feature(copied_into_inner)]
 #![feature(core_intrinsics)]
+#![feature(core_io)]
+#![feature(core_io_borrowed_buf)]
+#![feature(core_io_internals)]
 #![feature(deprecated_suggestion)]
 #![feature(deref_pure_trait)]
 #![feature(diagnostic_on_move)]
@@ -141,6 +144,7 @@
 #![feature(ptr_alignment_type)]
 #![feature(ptr_internals)]
 #![feature(ptr_metadata)]
+#![feature(raw_os_error_ty)]
 #![feature(rev_into_inner)]
 #![feature(set_ptr_value)]
 #![feature(sized_type_properties)]
@@ -228,6 +232,8 @@ pub mod collections;
 pub mod ffi;
 pub mod fmt;
 pub mod intrinsics;
+#[unstable(feature = "alloc_io", issue = "154046")]
+pub mod io;
 #[cfg(not(no_rc))]
 pub mod rc;
 pub mod slice;

library/std/src/io/error.rs

@@ -2,9 +2,9 @@
 mod tests;
 
 #[stable(feature = "rust1", since = "1.0.0")]
-pub use core::io::ErrorKind;
+pub use alloc_crate::io::ErrorKind;
 #[unstable(feature = "raw_os_error_ty", issue = "107792")]
-pub use core::io::RawOsError;
+pub use alloc_crate::io::RawOsError;
 
 // On 64-bit platforms, `io::Error` may use a bit-packed representation to
 // reduce size. However, this representation assumes that error codes are

library/std/src/lib.rs

@@ -380,6 +380,7 @@
 //
 // Library features (alloc):
 // tidy-alphabetical-start
+#![feature(alloc_io)]
 #![feature(allocator_api)]
 #![feature(clone_from_ref)]
 #![feature(get_mut_unchecked)]