Auto merge of #114063 - matthiaskrgr:rollup-c90czu6, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #114008 (coverage: Obtain the `__llvm_covfun` section name outside a per-function loop)
 - #114014 (builtin_macros: expect raw strings too)
 - #114043 (docs(LazyLock): add example pass local LazyLock variable to struct)
 - #114051 (Add regression test for invalid "unused const" in method)
 - #114052 (Suggest `{Option,Result}::as_ref()` instead of `cloned()` in some cases)
 - #114058 (Add help for crate arg when crate name is invalid)
 - #114060 (abi: unsized field in union - assert to delay bug )

r? `@ghost`
`@rustbot` modify labels: rollup

1 files changed, 20 insertions, 0 deletions

diff --git a/library/std/src/sync/lazy_lock.rs b/library/std/src/sync/lazy_lock.rs
index a6bc468b092..37bdec5abcc 100644
--- a/library/std/src/sync/lazy_lock.rs
+++ b/library/std/src/sync/lazy_lock.rs
@@ -25,6 +25,8 @@ union Data<T, F> {
 ///
 /// # Examples
 ///
+/// Initialize static variables with `LazyLock`.
+///
 /// ```
 /// #![feature(lazy_cell)]
 ///
@@ -54,6 +56,24 @@ union Data<T, F> {
 ///     //   Some("Hoyten")
 /// }
 /// ```
+/// Initialize fields with `LazyLock`.
+/// ```
+/// #![feature(lazy_cell)]
+///
+/// use std::sync::LazyLock;
+///
+/// #[derive(Debug)]
+/// struct UseCellLock {
+///     number: LazyLock<u32>,
+/// }
+/// fn main() {
+///     let lock: LazyLock<u32> = LazyLock::new(|| 0u32);
+///
+///     let data = UseCellLock { number: lock };
+///     println!("{}", *data.number);
+/// }
+/// ```
+
 #[unstable(feature = "lazy_cell", issue = "109736")]
 pub struct LazyLock<T, F = fn() -> T> {
     once: Once,