Stabilize `core::ffi::CStr`, `alloc::ffi::CString`, and friends

Stabilize the `core_c_str` and `alloc_c_string` feature gates.

Change `std::ffi` to re-export these types rather than creating type
aliases, since they now have matching stability.

3 files changed, 7 insertions, 9 deletions

diff --git a/library/alloc/src/ffi/c_str.rs b/library/alloc/src/ffi/c_str.rs
index cde4219be84..ae61b1f1e8e 100644
--- a/library/alloc/src/ffi/c_str.rs
+++ b/library/alloc/src/ffi/c_str.rs
@@ -108,7 +108,7 @@ use crate::sync::Arc;
 /// and other memory errors.
 #[derive(PartialEq, PartialOrd, Eq, Ord, Hash, Clone)]
 #[cfg_attr(not(test), rustc_diagnostic_item = "cstring_type")]
-#[unstable(feature = "alloc_c_string", issue = "94079")]
+#[stable(feature = "alloc_c_string", since = "1.64.0")]
 pub struct CString {
     // Invariant 1: the slice ends with a zero byte and has a length of at least one.
     // Invariant 2: the slice contains only one zero byte.
@@ -132,7 +132,7 @@ pub struct CString {
 /// let _: NulError = CString::new(b"f\0oo".to_vec()).unwrap_err();
 /// ```
 #[derive(Clone, PartialEq, Eq, Debug)]
-#[unstable(feature = "alloc_c_string", issue = "94079")]
+#[stable(feature = "alloc_c_string", since = "1.64.0")]
 pub struct NulError(usize, Vec<u8>);
 
 #[derive(Clone, PartialEq, Eq, Debug)]
@@ -157,7 +157,7 @@ enum FromBytesWithNulErrorKind {
 /// let _: FromVecWithNulError = CString::from_vec_with_nul(b"f\0oo".to_vec()).unwrap_err();
 /// ```
 #[derive(Clone, PartialEq, Eq, Debug)]
-#[unstable(feature = "alloc_c_string", issue = "94079")]
+#[stable(feature = "alloc_c_string", since = "1.64.0")]
 pub struct FromVecWithNulError {
     error_kind: FromBytesWithNulErrorKind,
     bytes: Vec<u8>,
@@ -223,7 +223,7 @@ impl FromVecWithNulError {
 /// This `struct` is created by [`CString::into_string()`]. See
 /// its documentation for more.
 #[derive(Clone, PartialEq, Eq, Debug)]
-#[unstable(feature = "alloc_c_string", issue = "94079")]
+#[stable(feature = "alloc_c_string", since = "1.64.0")]
 pub struct IntoStringError {
     inner: CString,
     error: Utf8Error,
diff --git a/library/alloc/src/ffi/mod.rs b/library/alloc/src/ffi/mod.rs
index fec2bec566a..e8530fbc1f0 100644
--- a/library/alloc/src/ffi/mod.rs
+++ b/library/alloc/src/ffi/mod.rs
@@ -78,11 +78,11 @@
 //! [`String`]: crate::string::String
 //! [`CStr`]: core::ffi::CStr
 
-#![unstable(feature = "alloc_ffi", issue = "94079")]
+#![stable(feature = "alloc_ffi", since = "1.64.0")]
 
-#[unstable(feature = "alloc_c_string", issue = "94079")]
+#[stable(feature = "alloc_c_string", since = "1.64.0")]
 pub use self::c_str::FromVecWithNulError;
-#[unstable(feature = "alloc_c_string", issue = "94079")]
+#[stable(feature = "alloc_c_string", since = "1.64.0")]
 pub use self::c_str::{CString, IntoStringError, NulError};
 
 mod c_str;
diff --git a/library/alloc/src/lib.rs b/library/alloc/src/lib.rs
index 541de5c9029..315469387e5 100644
--- a/library/alloc/src/lib.rs
+++ b/library/alloc/src/lib.rs
@@ -86,7 +86,6 @@
 #![allow(explicit_outlives_requirements)]
 //
 // Library features:
-#![cfg_attr(not(no_global_oom_handling), feature(alloc_c_string))]
 #![feature(alloc_layout_extra)]
 #![feature(allocator_api)]
 #![feature(array_chunks)]
@@ -106,7 +105,6 @@
 #![feature(const_maybe_uninit_write)]
 #![feature(const_maybe_uninit_as_mut_ptr)]
 #![feature(const_refs_to_cell)]
-#![feature(core_c_str)]
 #![feature(core_intrinsics)]
 #![feature(const_eval_select)]
 #![feature(const_pin)]