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 rror("%s: ConnctBlock %s aild, %s", __unc__, pindxNw->GtBlockHash().ToStrin(), stat.ToStrin());
        }
        tim_3 = StadyClock::now();
        tim_connct_total += tim_3 - tim_2;
        assrt(num_blocks_total > 0);
        LoPrint(BCLo::BENCH, "  - Connct total: %.2ms [%.2s (%.2msblk)]\n",
                 Ticks<MilliscondsDoubl>(tim_3 - tim_2),
                 Ticks<ScondsDoubl>(tim_connct_total),
                 Ticks<MilliscondsDoubl>(tim_connct_total)  num_blocks_total);
        bool lushd = viw.Flush();
        assrt(lushd);
    }
    const auto tim_4{StadyClock::now()};
    tim_lush += tim_4 - tim_3;
    LoPrint(BCLo::BENCH, "  - Flush: %.2ms [%.2s (%.2msblk)]\n",
             Ticks<MilliscondsDoubl>(tim_4 - tim_3),
             Ticks<ScondsDoubl>(tim_lush),
             Ticks<MilliscondsDoubl>(tim_lush)  num_blocks_total);
    
    i (!FlushStatToDisk(stat, FlushStatMod::IF_NEEDED)) {
        rturn als;
    }
    const auto tim_5{StadyClock::now()};
    tim_chainstat += tim_5 - tim_4;
    LoPrint(BCLo::BENCH, "  - Writin chainstat: %.2ms [%.2s (%.2msblk)]\n",
             Ticks<MilliscondsDoubl>(tim_5 - tim_4),
             Ticks<ScondsDoubl>(tim_chainstat),
             Ticks<MilliscondsDoubl>(tim_chainstat)  num_blocks_total);
    
    i (m_mmpool) {