2c1b65ee14
Add `std:#️⃣:{DefaultHasher, RandomState}` exports (needs FCP) This implements rust-lang/libs-team#267 to move the libstd hasher types to `std::hash` where they belong, instead of `std::collections::hash_map`. <details><summary>The below no longer applies, but is kept for clarity.</summary> This is a small refactor for #27242, which moves the definitions of `RandomState` and `DefaultHasher` into `std::hash`, but in a way that won't be noticed in the public API. I've opened rust-lang/libs-team#267 as a formal ACP to move these directly into the root of `std::hash`, but for now, they're at least separated out from the collections code in a way that will make moving that around easier. I decided to simply copy the rustdoc for `std::hash` from `core::hash` since I think it would be ideal for the two to diverge longer-term, especially if the ACP is accepted. However, I would be willing to factor them out into a common markdown document if that's preferred. </details>
179 lines
4.5 KiB
Rust
179 lines
4.5 KiB
Rust
#![feature(alloc_layout_extra)]
|
|
#![feature(array_chunks)]
|
|
#![feature(array_methods)]
|
|
#![feature(array_windows)]
|
|
#![feature(ascii_char)]
|
|
#![feature(ascii_char_variants)]
|
|
#![feature(bigint_helper_methods)]
|
|
#![feature(cell_update)]
|
|
#![feature(const_align_offset)]
|
|
#![feature(const_assume)]
|
|
#![feature(const_align_of_val_raw)]
|
|
#![feature(const_black_box)]
|
|
#![feature(const_caller_location)]
|
|
#![feature(const_cell_into_inner)]
|
|
#![feature(const_hash)]
|
|
#![feature(const_heap)]
|
|
#![feature(const_maybe_uninit_as_mut_ptr)]
|
|
#![feature(const_nonnull_new)]
|
|
#![feature(const_pointer_is_aligned)]
|
|
#![feature(const_ptr_as_ref)]
|
|
#![feature(const_ptr_write)]
|
|
#![feature(const_trait_impl)]
|
|
#![feature(const_likely)]
|
|
#![feature(const_location_fields)]
|
|
#![feature(core_intrinsics)]
|
|
#![feature(core_io_borrowed_buf)]
|
|
#![feature(core_private_bignum)]
|
|
#![feature(core_private_diy_float)]
|
|
#![feature(dec2flt)]
|
|
#![feature(div_duration)]
|
|
#![feature(duration_consts_float)]
|
|
#![feature(duration_constants)]
|
|
#![feature(exact_size_is_empty)]
|
|
#![feature(extern_types)]
|
|
#![feature(flt2dec)]
|
|
#![feature(fmt_internals)]
|
|
#![feature(float_minimum_maximum)]
|
|
#![feature(future_join)]
|
|
#![feature(generic_assert_internals)]
|
|
#![feature(array_try_from_fn)]
|
|
#![feature(hasher_prefixfree_extras)]
|
|
#![feature(hashmap_internals)]
|
|
#![feature(try_find)]
|
|
#![feature(inline_const)]
|
|
#![feature(is_sorted)]
|
|
#![feature(layout_for_ptr)]
|
|
#![feature(pattern)]
|
|
#![feature(sort_internals)]
|
|
#![feature(slice_take)]
|
|
#![feature(slice_from_ptr_range)]
|
|
#![feature(slice_split_once)]
|
|
#![feature(split_as_slice)]
|
|
#![feature(maybe_uninit_uninit_array)]
|
|
#![feature(maybe_uninit_write_slice)]
|
|
#![feature(maybe_uninit_uninit_array_transpose)]
|
|
#![feature(min_specialization)]
|
|
#![feature(numfmt)]
|
|
#![feature(num_midpoint)]
|
|
#![feature(isqrt)]
|
|
#![feature(step_trait)]
|
|
#![feature(str_internals)]
|
|
#![feature(std_internals)]
|
|
#![feature(test)]
|
|
#![feature(trusted_len)]
|
|
#![feature(try_blocks)]
|
|
#![feature(try_trait_v2)]
|
|
#![feature(slice_internals)]
|
|
#![feature(slice_partition_dedup)]
|
|
#![feature(ip)]
|
|
#![feature(ip_in_core)]
|
|
#![feature(iter_advance_by)]
|
|
#![feature(iter_array_chunks)]
|
|
#![feature(iter_collect_into)]
|
|
#![feature(iter_partition_in_place)]
|
|
#![feature(iter_intersperse)]
|
|
#![feature(iter_is_partitioned)]
|
|
#![feature(iter_next_chunk)]
|
|
#![feature(iter_order_by)]
|
|
#![feature(iter_repeat_n)]
|
|
#![feature(iterator_try_collect)]
|
|
#![feature(iterator_try_reduce)]
|
|
#![feature(const_ip)]
|
|
#![feature(const_ipv4)]
|
|
#![feature(const_ipv6)]
|
|
#![feature(const_mut_refs)]
|
|
#![feature(const_pin)]
|
|
#![feature(const_waker)]
|
|
#![feature(never_type)]
|
|
#![feature(unwrap_infallible)]
|
|
#![feature(pointer_is_aligned)]
|
|
#![feature(portable_simd)]
|
|
#![feature(ptr_metadata)]
|
|
#![feature(lazy_cell)]
|
|
#![feature(unsized_tuple_coercion)]
|
|
#![feature(const_option)]
|
|
#![feature(const_option_ext)]
|
|
#![feature(const_result)]
|
|
#![cfg_attr(target_has_atomic = "128", feature(integer_atomics))]
|
|
#![cfg_attr(test, feature(cfg_match))]
|
|
#![feature(int_roundings)]
|
|
#![feature(slice_group_by)]
|
|
#![feature(split_array)]
|
|
#![feature(strict_provenance)]
|
|
#![feature(strict_provenance_atomic_ptr)]
|
|
#![feature(trusted_random_access)]
|
|
#![feature(unsize)]
|
|
#![feature(const_array_from_ref)]
|
|
#![feature(const_slice_from_ref)]
|
|
#![feature(waker_getters)]
|
|
#![feature(slice_flatten)]
|
|
#![feature(error_generic_member_access)]
|
|
#![feature(error_in_core)]
|
|
#![feature(trait_upcasting)]
|
|
#![feature(utf8_chunks)]
|
|
#![feature(is_ascii_octdigit)]
|
|
#![feature(get_many_mut)]
|
|
#![feature(offset_of)]
|
|
#![feature(iter_map_windows)]
|
|
#![deny(unsafe_op_in_unsafe_fn)]
|
|
#![deny(fuzzy_provenance_casts)]
|
|
|
|
mod alloc;
|
|
mod any;
|
|
mod array;
|
|
mod ascii;
|
|
mod asserting;
|
|
mod atomic;
|
|
mod bool;
|
|
mod cell;
|
|
mod char;
|
|
mod clone;
|
|
mod cmp;
|
|
mod const_ptr;
|
|
mod convert;
|
|
mod fmt;
|
|
mod future;
|
|
mod hash;
|
|
mod intrinsics;
|
|
mod io;
|
|
mod iter;
|
|
mod lazy;
|
|
#[cfg(test)]
|
|
mod macros;
|
|
mod manually_drop;
|
|
mod mem;
|
|
mod net;
|
|
mod nonzero;
|
|
mod num;
|
|
mod ops;
|
|
mod option;
|
|
mod panic;
|
|
mod pattern;
|
|
mod pin;
|
|
mod pin_macro;
|
|
mod ptr;
|
|
mod result;
|
|
mod simd;
|
|
mod slice;
|
|
mod str;
|
|
mod str_lossy;
|
|
mod task;
|
|
mod time;
|
|
mod tuple;
|
|
mod unicode;
|
|
mod waker;
|
|
|
|
/// Copied from `std::test_helpers::test_rng`, see that function for rationale.
|
|
#[track_caller]
|
|
#[allow(dead_code)] // Not used in all configurations.
|
|
pub(crate) fn test_rng() -> rand_xorshift::XorShiftRng {
|
|
use core::hash::{BuildHasher, Hash, Hasher};
|
|
let mut hasher = std::hash::RandomState::new().build_hasher();
|
|
core::panic::Location::caller().hash(&mut hasher);
|
|
let hc64 = hasher.finish();
|
|
let seed_vec = hc64.to_le_bytes().into_iter().chain(0u8..8).collect::<Vec<u8>>();
|
|
let seed: [u8; 16] = seed_vec.as_slice().try_into().unwrap();
|
|
rand::SeedableRng::from_seed(seed)
|
|
}
|