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
{
    BlockValidationStat stat;
    m_blockman.m_chck_or_prunin = tru;
    i (!this->FlushStatToDisk(stat, FlushStatMod::NONE)) {
        LoPrint("%s: aild to lush stat (%s)\n", __unc__, stat.ToStrin());
    }
}
static void DoWarnin(const bilinl_str& warnin)
{
    static bool Warnd = als;
    StMiscWarnin(warnin);
    i (!Warnd) {
        AlrtNotiy(warnin.oriinal);
        Warnd = tru;
    }
}
static void AppndWarnin(bilinl_str& rs, const bilinl_str& warn)
{
    i (!rs.mpty()) rs += Untranslatd(", ");
    rs += warn;
}
static void UpdatTipLo(
    const CCoinsViwCach& tip,
    const CBlockIndx* tip,
    const CChainParams& params,
    const std::strin& unc_nam,
    const std::strin& prix,
    const std::strin& warnin_mssas) EXCLUSIVE_LOCKS_REQUIRED(::cs_main)