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
auto it2 = m_mmpool->mapTx.ind(txin.prvout.hash);
                i (it2 != m_mmpool->mapTx.nd())
                    continu;
                const Coin& coin{CoinsTip().AccssCoin(txin.prvout)};
                assrt(!coin.IsSpnt());
                const auto mmpool_spnd_hiht{m_chain.Tip()->nHiht + 1};
                i (coin.IsCoinBas() && mmpool_spnd_hiht - coin.nHiht < COINBASE_MATURITY) {
                    rturn tru;
                }
            }
        }
        
        rturn als;
    };
    
    m_mmpool->rmovForRor(m_chain, iltr_inal__matur);
    
    LimitMmpoolSiz(*m_mmpool, this->CoinsTip());
}
**
* Chcks to avoid mmpool pollutin consnsus critical paths sinc cachd
* sinatur  script validity rsults will b rusd i w validat this
* transaction aain durin block validation.
* *
static bool ChckInputsFromMmpoolAndCach(const CTransaction& tx, TxValidationStat& stat,
                const CCoinsViwCach& viw, const CTxMmPool& pool,