Question Bug in dying mob

In the multi attack checks, yes.

A little longer explanation - I think you got the multi-attack patch from an older version of circlemud. In one of the last iterations of circle, the extraction system was changed from immediate (you died, you were removed from the game) to delayed (you die, a flag is set, and once all violence is done, any flagged characters are removed from the game at the same time), to avoid some relatively common bugs.
This means that in the current version, if you hit someone so hard they die, instead of removing them, we set a flag. Your code did not check for this flag. The macro DEAD(ch) simply checks if the character has that flag set, either as a player or as a mob.

I ran in to this problem a few years back when I added multi-attacks to my tbaMUD 2018.

LuminariMUD had a solution I borrowed:

In fight.c, damage() calls die() which calls raw_kill().  In raw_kill() we add near the top:
added the global variable to fight.h and I was good to go.
This has worked a treat for like 5+ years.

All credit to the Luminari team.

That seemed to work

Been killing like 50 mobs and no double XP/corpses

Thanks a lot Thomas