Rollup merge of #96628 - joshtriplett:stabilize-then-some, r=m-ou-se

Stabilize `bool::then_some`

FCP completed in https://github.com/rust-lang/rust/issues/80967

compiler/rustc_ast_pretty/src/lib.rs

@@ -1,4 +1,3 @@
-#![feature(bool_to_option)]
 #![feature(crate_visibility_modifier)]
 #![feature(box_patterns)]
 #![recursion_limit = "256"]

compiler/rustc_borrowck/src/lib.rs

@@ -1,7 +1,6 @@
 //! This query borrow-checks the MIR to (further) ensure it is not broken.
 
 #![allow(rustc::potential_query_instability)]
-#![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(crate_visibility_modifier)]
 #![feature(let_chains)]

compiler/rustc_builtin_macros/src/lib.rs

@@ -4,7 +4,6 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(array_windows)]
 #![feature(box_patterns)]
-#![feature(bool_to_option)]
 #![feature(crate_visibility_modifier)]
 #![feature(decl_macro)]
 #![feature(is_sorted)]

compiler/rustc_codegen_llvm/src/lib.rs

@@ -5,7 +5,6 @@
 //! This API is completely unstable and subject to change.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![feature(bool_to_option)]
 #![feature(crate_visibility_modifier)]
 #![feature(let_chains)]
 #![feature(let_else)]

compiler/rustc_codegen_ssa/src/lib.rs

@@ -1,5 +1,4 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(try_blocks)]
 #![feature(let_else)]

compiler/rustc_const_eval/src/lib.rs

@@ -5,7 +5,6 @@ Rust MIR: a lowered representation of Rust.
 */
 
 #![feature(assert_matches)]
-#![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
 #![feature(crate_visibility_modifier)]

compiler/rustc_data_structures/src/lib.rs

@@ -10,7 +10,6 @@
 #![feature(array_windows)]
 #![feature(associated_type_bounds)]
 #![feature(auto_traits)]
-#![feature(bool_to_option)]
 #![feature(control_flow_enum)]
 #![feature(core_intrinsics)]
 #![feature(extend_one)]

compiler/rustc_infer/src/lib.rs

@@ -14,7 +14,6 @@
 
 #![allow(rustc::potential_query_instability)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
 #![cfg_attr(bootstrap, feature(derive_default_enum))]

compiler/rustc_interface/src/lib.rs

@@ -1,4 +1,3 @@
-#![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(let_else)]
 #![feature(internal_output_capture)]

compiler/rustc_lint/src/lib.rs

@@ -28,7 +28,6 @@
 #![allow(rustc::potential_query_instability)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(array_windows)]
-#![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
 #![feature(crate_visibility_modifier)]

compiler/rustc_middle/src/lib.rs

@@ -27,7 +27,6 @@
 #![feature(array_windows)]
 #![feature(assert_matches)]
 #![feature(backtrace)]
-#![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(core_intrinsics)]
 #![cfg_attr(bootstrap, feature(derive_default_enum))]

compiler/rustc_mir_build/src/lib.rs

@@ -2,7 +2,6 @@
 //!
 //! This crate also contains the match exhaustiveness and usefulness checking.
 #![allow(rustc::potential_query_instability)]
-#![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
 #![feature(crate_visibility_modifier)]

compiler/rustc_mir_dataflow/src/lib.rs

@@ -1,5 +1,4 @@
 #![feature(associated_type_defaults)]
-#![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(box_syntax)]
 #![feature(exact_size_is_empty)]

compiler/rustc_monomorphize/src/lib.rs

@@ -1,5 +1,4 @@
 #![feature(array_windows)]
-#![feature(bool_to_option)]
 #![feature(crate_visibility_modifier)]
 #![feature(control_flow_enum)]
 #![feature(let_else)]

compiler/rustc_query_system/src/lib.rs

@@ -1,5 +1,4 @@
 #![feature(assert_matches)]
-#![feature(bool_to_option)]
 #![feature(core_intrinsics)]
 #![feature(hash_raw_entry)]
 #![feature(let_else)]

compiler/rustc_resolve/src/lib.rs

@@ -9,7 +9,6 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(box_patterns)]
 #![feature(drain_filter)]
-#![feature(bool_to_option)]
 #![feature(crate_visibility_modifier)]
 #![feature(if_let_guard)]
 #![feature(let_chains)]

compiler/rustc_span/src/lib.rs

@@ -15,7 +15,6 @@
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(array_windows)]
-#![feature(bool_to_option)]
 #![feature(crate_visibility_modifier)]
 #![feature(let_else)]
 #![feature(if_let_guard)]

compiler/rustc_target/src/lib.rs

@@ -9,7 +9,6 @@
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(associated_type_bounds)]
-#![feature(bool_to_option)]
 #![feature(exhaustive_patterns)]
 #![feature(let_else)]
 #![feature(min_specialization)]

compiler/rustc_trait_selection/src/lib.rs

@@ -12,7 +12,6 @@
 
 #![allow(rustc::potential_query_instability)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
 #![feature(crate_visibility_modifier)]

compiler/rustc_typeck/src/lib.rs

@@ -57,7 +57,6 @@ This API is completely unstable and subject to change.
 
 #![allow(rustc::potential_query_instability)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
 #![feature(crate_visibility_modifier)]

library/core/src/bool.rs

@@ -9,12 +9,10 @@ impl bool {
     /// # Examples
     ///
     /// ```
-    /// #![feature(bool_to_option)]
-    ///
     /// assert_eq!(false.then_some(0), None);
     /// assert_eq!(true.then_some(0), Some(0));
     /// ```
-    #[unstable(feature = "bool_to_option", issue = "80967")]
+    #[stable(feature = "bool_to_option", since = "1.62.0")]
     #[rustc_const_unstable(feature = "const_bool_to_option", issue = "91917")]
     #[inline]
     pub const fn then_some<T>(self, t: T) -> Option<T>

library/core/tests/lib.rs

@@ -3,7 +3,6 @@
 #![feature(array_methods)]
 #![feature(array_windows)]
 #![feature(bench_black_box)]
-#![feature(bool_to_option)]
 #![feature(box_syntax)]
 #![feature(cell_update)]
 #![feature(const_assume)]

src/librustdoc/lib.rs

@@ -5,7 +5,6 @@
 #![feature(rustc_private)]
 #![feature(array_methods)]
 #![feature(assert_matches)]
-#![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
 #![feature(box_syntax)]