embassy-sync 0.8.0

no-std, no-alloc synchronization primitives with async support
Documentation 
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#[cfg(not(miri))]
#[test]
fn ui() {
    let t = trybuild::TestCases::new();

    // These test cases should fail to compile since OnceLock and LazyLock should not unconditionally implement sync
    // for all types. These tests are regression tests against the following issues:
    // * https://github.com/embassy-rs/embassy/issues/4307
    // * https://github.com/embassy-rs/embassy/issues/3904
    t.compile_fail("tests/ui/sync_impl/lazy_lock_function.rs");
    t.compile_fail("tests/ui/sync_impl/lazy_lock_type.rs");
    t.compile_fail("tests/ui/sync_impl/once_lock.rs");
}