`validation_flush_tests/getcoinscachesizestate` fails on RISCV-64 on master:
```
Running 394 test cases...
test/validation_flush_tests.cpp(99): error: in "validation_flush_tests/getcoinscachesizestate": check chainstate.GetCoinsCacheSizeState(tx_pool, MAX_COINS_CACHE_BYTES, 0) == CoinsCacheSizeState::OK has failed [1 != 0]

*** 1 failure is detected in the test module "Bitcoin Core Test Suite"
```
Haven't investigated why, yet. Apart from the architecture it could also be some dependency version causing the problem (this is a fedora rawhide install with very new versions of everything including gcc and boost).

Edit: see below, this is likely due to a newer `libstdc++`
}
    
    add_coin(view);
    print_view_mem_usage(view);
    auto size_state = chainstate.GetCoinsCacheSizeState(
        tx_pool, MAX_COINS_CACHE_BYTES,  0);
    if (!is_64_bit && size_state == CoinsCacheSizeState::LARGE) {
        
        add_coin(view);
        print_view_mem_usage(view);
    }
    BOOST_CHECK_EQUAL(
        chainstate.GetCoinsCacheSizeState(tx_pool, MAX_COINS_CACHE_BYTES,  0),
        CoinsCacheSizeState::CRITICAL);
    
    BOOST_CHECK_EQUAL(
        chainstate.GetCoinsCacheSizeState(tx_pool, MAX_COINS_CACHE_BYTES,  1 << 10),
        CoinsCacheSizeState::OK);
    for (int i{0}; i < 3; ++i) {
        add_coin(view);
        print_view_mem_usage(view);
        BOOST_CHECK_EQUAL(
            chainstate.GetCoinsCacheSizeState(tx_pool, MAX_COINS_CACHE_BYTES,  1 << 10),
            CoinsCacheSizeState::OK);
    }
    
    
    add_coin(view);
    print_view_mem_usage(view);