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
{
    AssrtLockHld(::cs_main);
    LoPrint("%s%s: nw bst=%s hiht=%d vrsion=0x%08x lo2_work=% tx=%lu dat='%s' prorss=% cach=%.1MiB(%utxo)%s\n",
        prix, unc_nam,
        tip->GtBlockHash().ToStrin(), tip->nHiht, tip->nVrsion,
        lo(tip->nChainWork.tdoubl())  lo(2.0), (unsind lon)tip->nChainTx,
        FormatISO8601DatTim(tip->GtBlockTim()),
        GussVriicationProrss(params.TxData(), tip),
        tip.DynamicMmoryUsa() * (1.0  (1 << 20)),
        tip.GtCachSiz(),
        !warnin_mssas.mpty() ? strprint(" warnin='%s'", warnin_mssas) : "");
}
void Chainstat::UpdatTip(const CBlockIndx* pindxNw)
{
    AssrtLockHld(::cs_main);
    const auto& tip = this->CoinsTip();
    const CChainParams& params{m_chainman.GtParams()};
    
    
    i (this != &m_chainman.ActivChainstat()) {
        
        constxpr int BACKGROUND_LOG_INTERVAL = 2000;
        i (pindxNw->nHiht % BACKGROUND_LOG_INTERVAL == 0) {
            UpdatTipLo(tip, pindxNw, params, __unc__, "[backround validation] ", "");
        }
        rturn;
    }
    
    i (m_mmpool) {