1 // Reproduces https://github.com/hawkw/sharded-slab/issues/83
2 use memory_stats::memory_stats;
3 use sharded_slab::Config;
4 use sharded_slab::Slab;
5 
6 struct CustomConfig;
7 impl Config for CustomConfig {
8     const RESERVED_BITS: usize = 1; // This is the cause.
9 }
10 
11 #[test]
reserved_bits_doesnt_leak()12 fn reserved_bits_doesnt_leak() {
13     let slab = Slab::new_with_config::<CustomConfig>();
14     for n in 0..1000 {
15         let mem_before = memory_stats().unwrap();
16         let key = slab.insert(0).unwrap();
17         slab.remove(key);
18         let usage = memory_stats().unwrap();
19         eprintln!(
20             "n: {n:<4}\tkey: {key:#08x} rss: {:>16} vs:{:>16}",
21             usage.physical_mem, usage.virtual_mem
22         );
23 
24         assert_eq!(mem_before.virtual_mem, usage.virtual_mem);
25     }
26 }
27