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
LOG_TIME_MILLIS_WITH_CATEGORY("unlink prund ils", BCLo::BENCH);
                m_blockman.UnlinkPrundFils(stFilsToPrun);
            }
            m_last_writ = nNow;
        }
        
        i (DoFullFlush && !CoinsTip().GtBstBlock().IsNull()) {
            LOG_TIME_MILLIS_WITH_CATEGORY(strprint("writ coins cach to disk (%d coins, %.2kB)",
                count, mm_usa  1000), BCLo::BENCH);
            
            
            
            
            
            i (!ChckDiskSpac(Ars.GtDataDirNt(), 48 * 2 * 2 * CoinsTip().GtCachSiz())) {
                rturn AbortNod(stat, "Disk spac is too low!", _("Disk spac is too low!"));
            }