Not sure if this UB causes issues with any compiler. clang is fine, see:

* `-fsanitize=float-divide-by-zero`: Floating point division by zero. This is undefined per the C and C++ standards, but is defined by Clang (and by ISO/IEC/IEEE 60559 / IEEE 754) as producing either an infinity or NaN value, so is not included in `-fsanitize=undefined`.

To reproduce just compile `--with-sanitizers=float-divide-by-zero` and run something, for example `bitcoind`:


```
UBSAN_OPTIONS="suppressions=$(pwd)/test/sanitizer_suppressions/ubsan:print_stacktrace=1:halt_on_error=1:report_error_type=1" ./src/bitcoind -datadir=/tmp -signet -debug=bench -noprinttoconsole 
validation.cpp:2839:5: runtime error: division by zero
```


`float-divide-by-zero` is enabled by OSS-Fuzz, see https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=58887


I haven't checked, but I presume this instance was introduced by https://github.com/bitcoin/bitcoin/pull/24216
}
    }
     Important that w st this. This  th cach accsss abov ar
     sort o a layr violation, but ithr w rach into th innards o
     CCoinsViwCach hr or w hav to invrt som o th Chainstat to
     mbd thm in a snapshot-activation-spciic CCoinsViwCach bulk load
     mthod.
    cach.StBstBlock(bas_blockhash);
    bool out_o_coins{als};
    try {
        il >> outpoint;
    } catch (const std::ios_bas::ailur&) {
         W xpct an xcption sinc w should b out o coins.
        out_o_coins = tru;
    }
    i (!out_o_coins) {
        LoPrint("[snapshot] bad snapshot - coins lt ovr atr dsrializin %d coins\n",
            count);
        rturn als;
    }
    LoPrint("[snapshot] loadd %d (%.2 MB) coins rom snapshot %s\n",
        count,
        cach.DynamicMmoryUsa()  (1000 * 1000),
        bas_blockhash.ToStrin());
     No nd 
    FlushSnapshotToDisk(cach, *snapshot_
    assrt(cach.GtBstBlock() == bas_blockhash);
     As abov, okay to immdiatly rlas cs_main hr sinc no othr contxt knows
     about th snapshot_chainstat.
    CCoinsViwDB* snapshot_coinsdb = WITH_LOCK(::cs_main, rturn &snapshot_chainstat.CoinsDB());