Re: [REPOST][PATCH v4] H8/300: sim: Fix simulator hang caused by qsort on Windows/MinGW

[Jeff Law <jeffrey.law@oss.qualcomm.com>]

On 10/8/26 9:14 PM, Jan Dubiec wrote:
> On 8.10.2026 04:04, Jeff Law wrote:
> [...]
>
>> This seems generally sensible to me.  I'd probably kill that ldm/stm 
>> special case, particularly if the new comparator avoids the problem.
>
> I'm not sure what you mean by "new". That said, using a stable sorting 
> algorithm avoids the problem, but only incidentally.
Then we probably need to further improve the stability of the sort.

>
>> I'd instead be more interested in tripping an assert if we ever have 
>> two things compare equal
> An assert doesn't make sense here because equal comparisons occur "all 
> the time". For H8/300H, the comparator is called 80919 times and 
> returns zero 22434 times. For H8S, the corresponding numbers are 
> 94315/26963, and for H8SX, 79552/23240. The h8_opcodes[] array 
> contains 8484 elements.
Those would all seem like problems waiting to happen.  If qsort ever 
returns 0, then you've got the potential for an unstable sort.

Jeff