1 //! Various data structures used by the Rust compiler. The intention
2 //! is that code in here should be not be *specific* to rustc, so that
3 //! it can be easily unit tested and so forth.
7 //! This API is completely unstable and subject to change.
9 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
10 #![feature(array_windows)]
11 #![feature(associated_type_bounds)]
12 #![feature(auto_traits)]
13 #![feature(bool_to_option)]
14 #![feature(control_flow_enum)]
15 #![feature(core_intrinsics)]
16 #![feature(extend_one)]
17 #![feature(hash_raw_entry)]
18 #![feature(maybe_uninit_uninit_array)]
19 #![feature(min_specialization)]
20 #![feature(never_type)]
21 #![feature(type_alias_impl_trait)]
22 #![feature(new_uninit)]
23 #![feature(once_cell)]
25 #![feature(thread_id_value)]
26 #![feature(vec_into_raw_parts)]
27 #![allow(rustc::default_hash_types)]
28 #![deny(unaligned_references)]
35 extern crate rustc_macros;
39 pub fn cold_path<F: FnOnce() -> R, R>(f: F) -> R {
47 #[allow(unused_unsafe)]
48 e => unsafe { std::intrinsics::likely(e) },
54 macro_rules! unlikely {
57 #[allow(unused_unsafe)]
58 e => unsafe { std::intrinsics::unlikely(e) },
64 pub mod binary_search_util;
73 pub mod obligation_forest;
81 pub use ena::snapshot_vec;
86 pub mod stable_hasher;
95 pub mod transitive_relation;
96 pub mod vec_linked_list;
99 pub use atomic_ref::AtomicRef;
107 pub use ena::undo_log;
110 pub struct OnDrop<F: Fn()>(pub F);
112 impl<F: Fn()> OnDrop<F> {
113 /// Forgets the function which prevents it from running.
114 /// Ensure that the function owns no memory, otherwise it will be leaked.
116 pub fn disable(self) {
117 std::mem::forget(self);
121 impl<F: Fn()> Drop for OnDrop<F> {
128 // See comments in src/librustc_middle/lib.rs
130 pub fn __noop_fix_for_27438() {}