Re: [bug] busyloop upon $=var with NULs when $IFS contains both NUL and a byte > 0x7f

[Jun T <takimoto-j@xxxxxxxxxxxxxxxxx>]

Sorry for very late reply.

> 2022/11/29 23:38, Peter Stephenson <p.w.stephenson@xxxxxxxxxxxx> wrote:
> 
>> On 29/11/2022 14:27 Jun. T <takimoto-j@xxxxxxxxxxxxxxxxx> wrote:
>> 3834         for (; *s; r++) {                                                 
>> 3835             char *ie = itype_end(s, ISEP, 1);               
>> 3836             if (ie != s) {                                             
>> 3837                 s = ie;                                                
>> ....                          
>> 3840             }                                          
>> 3841             (void)findsep(&s, NULL, 0);
>> ....
>> 3845         }
>> 
>> Here, the pointer s already points to a ISEP (\x83\x20 = metafied Nul),
>> but itype_end() can't find the next ISEP (ie == s) due to the empty
>> ifs_wide, and findsep() does not move s because *s is already ISEP,
>> resulting in infinite-loop with the same s.
> 
> I guess the obvious thing to do here is any time s doesn't move
> give up splitting at that point.

How can we 'give up'?  Is it OK to call exit()?