[BUG] usize overflow on big cache capacity

[GrandChaman]

Hello,

First of all thank you for the very nice work !

There seems to be a multiply overflow that could be handled at the line referenced below.

moka/src/sync/base_cache.rs

Line 395 in 76b06af

let skt_capacity = usize::max(max_capacity * 32, 100);

This could be done either by returning an error type, or by maxing the value of the cache capacity to usize::max_value() / 32

[tatsuya6502]

Thank you for reporting. You are right. The overflow will occur especially when usize is 32 bit or smaller. I will set a reasonable max value to skt_capacity to avoid the overflow.

[tatsuya6502]

This has been addressed by #28. I will release Moka v0.5.2 soon.