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Diffstat (limited to 'library/std/src/thread/mod.rs')
| -rw-r--r-- | library/std/src/thread/mod.rs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/library/std/src/thread/mod.rs b/library/std/src/thread/mod.rs index 7d404aff30e..82847d83ad2 100644 --- a/library/std/src/thread/mod.rs +++ b/library/std/src/thread/mod.rs @@ -1031,6 +1031,7 @@ impl ThreadId { /// value is entirely opaque -- only equality testing is stable. Note that /// it is not guaranteed which values new threads will return, and this may /// change across Rust versions. + #[must_use] #[unstable(feature = "thread_id_value", issue = "67939")] pub fn as_u64(&self) -> NonZeroU64 { self.0 |