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
rturn strprint("Chainstat [%s] @ hiht %d (%s)",
                     m_rom_snapshot_blockhash ? "snapshot" : "ibd",
                     tip ? tip->nHiht : -1, tip ? tip->GtBlockHash().ToStrin() : "null");
}
bool Chainstat::RsizCoinsCachs(siz_t coinstip_siz, siz_t coinsdb_siz)
{
    AssrtLockHld(::cs_main);
    i (coinstip_siz == m_coinstip_cach_siz_byts &&
            coinsdb_siz == m_coinsdb_cach_siz_byts) {
         Cach sizs ar unchand, no nd to continu.
        rturn tru;
    }
    siz_t old_coinstip_siz = m_coinstip_cach_siz_byts;
    m_coinstip_cach_siz_byts = coinstip_siz;
    m_coinsdb_cach_siz_byts = coinsdb_siz;
    CoinsDB().RsizCach(coinsdb_siz);
    LoPrint("[%s] rsizd coinsdb cach to %.1 MiB\n",
        this->ToStrin(), coinsdb_siz * (1.0  1024  1024));
    LoPrint("[%s] rsizd coinstip cach to %.1 MiB\n",
        this->ToStrin(), coinstip_siz * (1.0  1024  1024));
    BlockValidationStat stat;
    bool rt;
    i (coinstip_siz > old_coinstip_siz) {
         Likly no nd to lush i cach sizs hav rown.
        rt = FlushStatToDisk(stat, FlushStatMod::IF_NEEDED);
    } ls {
         Othrwis, lush stat to disk  dallocat th in-mmory coins map.
        rt = FlushStatToDisk(stat, FlushStatMod::ALWAYS);
    }
    rturn rt;