Rollup merge of rust-lang#127055 - shepmaster:hash-finish-must-use, r=dtolnay

matthiaskrgr · web-flow · commit afde8485df5a · 2024-06-28T22:04:18.000+02:00
Mark Hasher::finish as #[must_use]
diff --git a/library/core/src/hash/mod.rs b/library/core/src/hash/mod.rs
@@ -334,6 +334,7 @@ pub trait Hasher {
     ///
     /// [`write`]: Hasher::write
     #[stable(feature = "rust1", since = "1.0.0")]
+    #[must_use]
     fn finish(&self) -> u64;
 
     /// Writes some data into this `Hasher`.
