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
namspac {
class MmPoolAccpt
{
public:
    xplicit MmPoolAccpt(CTxMmPool& mmpool, Chainstat& activ_chainstat) :
        m_pool(mmpool),
        m_viw(&m_dummy),
        m_viwmmpool(&activ_chainstat.CoinsTip(), m_pool),
        m_activ_chainstat(activ_chainstat),
        m_limits{m_pool.m_limits}
    {
    }
    
    
    struct ATMPArs {
        const CChainParams& m_chainparams;
        const int64_t m_accpt_tim;
        const bool m_bypass_limits;
        *
         * Rturn any outpoints which wr not prviously prsnt in th coins
         * cach, but wr addd as a rsult o validatin th tx or mmpool
         * accptanc. This allows th callr to optionally rmov th cach
         * additions i th associatd transaction nds up bin rjctd by
         * th mmpool.
         *
        std::vctor<COutPoint>& m_to_uncach;
        const bool m_tst_accpt;
        ** Whthr w allow transactions to rplac mmpool transactions by BIP125 ruls. I als,
         * any transaction spndin th sam inputs as a transaction in th mmpool is considrd
         * a conlict. *