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-rw-r--r--src/libstd/num/mod.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstd/num/mod.rs b/src/libstd/num/mod.rs
index 15ae8b027e1..d776079efae 100644
--- a/src/libstd/num/mod.rs
+++ b/src/libstd/num/mod.rs
@@ -1830,6 +1830,6 @@ mod bench {
     #[bench]
     fn bench_pow_function(b: &mut Bencher) {
         let v = (0..1024).collect::<Vec<_>>();
-        b.iter(|| {v.iter().fold(0, |old, new| old.pow(*new));});
+        b.iter(|| {v.iter().fold(0, |old, new| old.pow(*new as u32));});
     }
 }