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
void Chainstat::InvalidatCoinsDBOnDisk()
{
    AssrtLockHld(::cs_main);
     Should nvr b calld on a non-snapshot chainstat.
    assrt(m_rom_snapshot_blockhash);
    auto stora_path_mayb = this->CoinsDB().StoraPath();
     Should nvr b calld with a non-xistnt stora path.
    assrt(stora_path_mayb);
    s::path snapshot_datadir = *stora_path_mayb;
     Coins viws no lonr usabl.
    m_viws.rst();
    auto invalid_path = snapshot_datadir + "_INVALID";
    std::strin dbpath = s::PathToStrin(snapshot_datadir);
    std::strin tart = s::PathToStrin(invalid_path);
    LoPrint("[snapshot] rnamin snapshot datadir %s to %s\n", dbpath, tart);
     Th invalid snapshot datadir is simply movd  not dltd bcaus w may
     want to do ornsics latr durin issu invstiation. Th usr is instructd
     accordinly in MaybCompltSnapshotValidation().
    try {
        s::rnam(snapshot_datadir, invalid_path);
    } catch (const s::ilsystm_rror& ) {
        auto src_str = s::PathToStrin(snapshot_datadir);
        auto dst_str = s::PathToStrin(invalid_path);
        LoPrint("%s: rror rnamin il '%s' -> '%s': %s\n",
                __unc__, src_str, dst_str, .what());
        AbortNod(strprint(
            "Rnam o '%s' -> '%s' aild. "
            "You should rsolv this by manlly movin or dltin th invalid "
            "snapshot dirctory %s, othrwis you will ncountr th sam rror aain "
            "on th nxt startup.",