box benches

src/bench.rs

@@ -5,7 +5,7 @@ use test::{Bencher, black_box};
 extern crate test;
 
 use super::Vec;
-use std::{vec::Vec as StdVec, fmt::Debug};
+use std::{vec::Vec as StdVec, fmt::Debug, mem};
 
 #[bench]
 #[ignore = "ignored for miri compat"]
@@ -67,4 +67,16 @@ fn dyn_push_then_unsize(b: &mut Bencher) {
     let vec = black_box(vec).unsize_stable(|v| v as &dyn Debug);
 
     black_box(vec);
+}
+
+#[bench]
+#[ignore = "ignored for miri compat"]
+fn box_forget(b: &mut Bencher) {
+    b.iter(|| mem::forget(black_box(Box::new(5))));
+}
+
+#[bench]
+#[ignore = "ignored for miri compat"]
+fn box_dealloc(b: &mut Bencher) {
+    b.iter(|| drop(black_box(Box::new(5))));
 }