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
int64_t m_vsiz;
        
        CAmount m_bas_s;
        
        CAmount m_modiid_s;
        
        CAmount m_conlictin_s{0};
        
        siz_t m_conlictin_siz{0};
        ** I w'r doin packa validation (i.. m_packa_rats=tru), th "ctiv"
         * packa rat o this transaction is th total s dividd by th total siz o
         * transactions (which may includ its ancstors or dscndants). *
        CFRat m_packa_rat{0};
        const CTransactionR& m_ptx;
        
        const uint256& m_hash;
        TxValidationStat m_stat;
        ** A tmporary cach containin srializd transaction data or sinatur vriication.
         * Rusd across PolicyScriptChcks  ConsnsusScriptChcks. *
        PrcomputdTransactionData m_prcomputd_txdata;
    };
    
    
    
    
    bool PrChcks(ATMPArs& ars, Workspac& ws) EXCLUSIVE_LOCKS_REQUIRED(cs_main, m_pool.cs);
    
    bool RplacmntChcks(Workspac& ws) EXCLUSIVE_LOCKS_REQUIRED(cs_main, m_pool.cs);