There is a bug on sprintf newlib when using specifier %-*.llu

Hi,

I found a bug when using the newlib sprinf using the spcifier %-*.llu

Below is the code snippet

function (){
  int64_t longval;
  longval=(int64_t)(1);
  char comparebuf[2000];
  sprintf(comparebuf, "testing string! arg1=%-*.llu, arg2=%-*.llu",1,longval,1,longval);
  printf(comparebuf);
}

And i get this outcome
testing string! arg1=499644, arg2=

Expected outcome should be
testing string! arg1=1, arg2=1

Regards,
Ng Boon Khai.