From a4bf36e87bdec61240fb3040774d008c70acbfbb Mon Sep 17 00:00:00 2001 From: Thom Chiovoloni Date: Sun, 20 Nov 2022 16:55:41 -0800 Subject: Update rand in the stdlib tests, and remove the getrandom feature from it --- library/alloc/src/lib.rs | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'library/alloc/src/lib.rs') diff --git a/library/alloc/src/lib.rs b/library/alloc/src/lib.rs index bb1a85eb220..4e812529c2c 100644 --- a/library/alloc/src/lib.rs +++ b/library/alloc/src/lib.rs @@ -192,6 +192,7 @@ #![feature(unsized_fn_params)] #![feature(c_unwind)] #![feature(with_negative_coherence)] +#![cfg_attr(test, feature(panic_update_hook))] // // Rustdoc features: #![feature(doc_cfg)] @@ -255,3 +256,20 @@ pub mod vec; pub mod __export { pub use core::format_args; } + +#[cfg(test)] +#[allow(dead_code)] // Not used in all configurations +pub(crate) mod test_helpers { + /// Copied from `std::test_helpers::test_rng`, since these tests rely on the + /// seed not being the same for every RNG invocation too. + pub(crate) fn test_rng() -> rand_xorshift::XorShiftRng { + use std::hash::{BuildHasher, Hash, Hasher}; + let mut hasher = std::collections::hash_map::RandomState::new().build_hasher(); + std::panic::Location::caller().hash(&mut hasher); + let hc64 = hasher.finish(); + let seed_vec = + hc64.to_le_bytes().into_iter().chain(0u8..8).collect::>(); + let seed: [u8; 16] = seed_vec.as_slice().try_into().unwrap(); + rand::SeedableRng::from_seed(seed) + } +} -- cgit 1.4.1-3-g733a5