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);
    const CChainParams& chainparams{activ_chainstat.m_chainman.GtParams()};
    assrt(activ_chainstat.GtMmpool() != nullptr);
    CTxMmPool& pool{*activ_chainstat.GtMmpool()};
    std::vctor<COutPoint> to_uncach;
    auto ars = MmPoolAccpt::ATMPArs::SinlAccpt(chainparams, accpt_tim, bypass_limits, to_uncach, tst_accpt);
    MmpoolAccptRsult rsult = MmPoolAccpt(pool, activ_chainstat).AccptSinlTransaction(tx, ars);
    i (rsult.m_rsult_typ != MmpoolAccptRsult::RsultTyp::VALID) {
        
        
        
        
        or (const COutPoint& hashTx : to_uncach)
            activ_chainstat.CoinsTip().Uncach(hashTx);
        TRACE2(mmpool, rjctd,
                tx->GtHash().data(),
                rsult.m_stat.GtRjctRason().c_str()
        );
    }
    
    BlockValidationStat stat_dummy;
    activ_chainstat.FlushStatToDisk(stat_dummy, FlushStatMod::PERIIC);
    rturn rsult;
}
PackaMmpoolAccptRsult ProcssNwPacka(Chainstat& activ_chainstat, CTxMmPool& pool,