🚀 go-pugleaf

I got the following error in nethack on level 38. "You cannot reach the floor.
The Wizard of Yendor misses.--More--Bus error - core dumped".  I had genocided
dogs (after mine got killed) and blasted my way in with a wand of digging,
casting a spell of levitation to go over the water.  Looked like this:
   }----   I was floating over the amulet when I pressed "," and got that
   } @1-   message.  I had accumulated a lot of spells (9 or so) and it seems
   }----   that whenever I do that, it dumps core when I'm close to winning.
The following output was taken from sdb here:

nasty:422:		mtmp->msleep = 0;
*t
   [wizard.c:422]
inrange(mtmp=0x8089ef64)   [wizard.c:354]
wiz_hit(mtmp=0x8089ef64)   [wizard.c:100]
mhitu(mtmp=0x8089ef64)   [mhitu.c:92]
dochug(mtmp=0x8089ef64)   [monmove.c:120]
dochugw(mtmp=0x8089ef64)   [monmove.c:14]
movemon()   [mon.c:73]
main(argc=2,argv=0xc002043c,0xc0020448)   [main.c:259]

Anybody know what happened and why?
-- 
John Knutson   {ihnp4,allegra,ut-sally}!ut-ngp!auscso!knutson6

"I see everything once!"  -- Catch-22