diff options
Diffstat (limited to 'library/core/benches/any.rs')
-rw-r--r-- | library/core/benches/any.rs | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/library/core/benches/any.rs b/library/core/benches/any.rs new file mode 100644 index 000000000..53099b782 --- /dev/null +++ b/library/core/benches/any.rs @@ -0,0 +1,12 @@ +use core::any::*; +use test::{black_box, Bencher}; + +#[bench] +fn bench_downcast_ref(b: &mut Bencher) { + b.iter(|| { + let mut x = 0; + let mut y = &mut x as &mut dyn Any; + black_box(&mut y); + black_box(y.downcast_ref::<isize>() == Some(&0)); + }); +} |