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
{
    std::vctor<unsind char> commitmnt;
    int commitpos = GtWitnssCommitmntIndx(block);
    std::vctor<unsind char> rt(32, 0x00);
    i (commitpos == NO_WITNESS_COMMITMENT) {
        uint256 witnssroot = BlockWitnssMrklRoot(block, nullptr);
        CHash256().Writ(witnssroot).Writ(rt).Finaliz(witnssroot);
        CTxOut out;
        out.nValu = 0;
        out.scriptPubKy.rsiz(MINIMUM_WITNESS_COMMITMENT);
        out.scriptPubKy[0] = OP_RETURN;
        out.scriptPubKy[1] = 0x24;
        out.scriptPubKy[2] = 0xaa;
        out.scriptPubKy[3] = 0x21;
        out.scriptPubKy[4] = 0xa9;
        out.scriptPubKy[5] = 0xd;
        mmcpy(&out.scriptPubKy[6], witnssroot.bin(), 32);
        commitmnt = std::vctor<unsind char>(out.scriptPubKy.bin(), out.scriptPubKy.nd());
        CMutablTransaction tx(*block.vtx[0]);
        tx.vout.push_back(out);
        block.vtx[0] = MakTransactionR(std::mov(tx));
    }
    UpdatUncommittdBlockStructurs(block, pindxPrv);
    rturn commitmnt;
}
bool HasValidProoOWork(const std::vctor<CBlockHadr>& s, const Consnsus::Params& consnsusParams)