Descriptive Problem Summary:
Ubuntu 14.04 Server, BYOND 506.1247
On any player joining a server running a specific branch of Space Station 13, Dream Daemon crashes with an illegal operation.

Windows 8.1, BYOND 506.1247
On server startup running the same branch, Dream Daemon crashes.

Code is at https://github.com/GinjaNinja32/Baystation12/tree/drinks - for any not familiar with GitHub, there is a "Download ZIP" button on the right hand side which will give you a zip file containing the code.

Numbered Steps to Reproduce Problem:
Ubuntu:
1. Host world (code linked above)
2. Join world

Windows:
1. Host world

Code Snippet (if applicable) to Reproduce Problem:
See above.

Expected Results:
Dream Daemon to not crash

Actual Results:
Dream Daemon crashed:
BUG: Crashing due to an illegal operation!
proc name:
source file: combat.dm,5
usr: null
src: Dark Gygax (/obj/mecha/combat/gygax/dark)
call stack:
Dark Gygax (/obj/mecha/combat/gygax/dark): ()

Backtrace for BYOND 506.1247 on Linux:
Generated at Thu Dec 11 03:17:28 2014

DreamDaemon [0x8048000, 0x0], [0x8048000, 0x804bb14]
libbyond.so [0xf72d1000, 0x0], 0x1ed419
[0xf778b000, 0xf778b410], [0xf778b000, 0xf778b410]
libbyond.so [0xf72d1000, 0x0], 0x1ed419
libbyond.so [0xf72d1000, 0x0], 0x2048d2
libbyond.so [0xf72d1000, 0x0], 0x211bb4
libbyond.so [0xf72d1000, 0x0], 0x21defe
libbyond.so [0xf72d1000, 0x0], 0x21e04b
libbyond.so [0xf72d1000, 0x0], 0x1c00c5
libbyond.so [0xf72d1000, 0x0], 0x1bfe6d
libbyond.so [0xf72d1000, 0x0], 0x1bfe6d
libbyond.so [0xf72d1000, 0x0], 0x1c3abd
libbyond.so [0xf72d1000, 0x0], 0x1c8e4e
libbyond.so [0xf72d1000, 0x0], 0x1c9c45
libbyond.so [0xf72d1000, 0x0], 0x1c9fea
libbyond.so [0xf72d1000, 0x0], 0x1e9f05
libbyond.so [0xf72d1000, 0x0], 0x1ebd23
libbyond.so [0xf72d1000, 0x0], 0x1e81d9
libbyond.so [0xf72d1000, 0x0], 0x1e8abc
DreamDaemon [0x8048000, 0x0], [0x8048000, 0x804ae19]
libc.so.6 0x19990, 0x19a83 (__libc_start_main)
DreamDaemon [0x8048000, 0x0], [0x8048000, 0x804a771]

Recent proc calls:



/proc/islist
/proc/islist
/proc/difflist
/atom/New
/atom/movable/New
/obj/machinery/New
/atom/New
/atom/movable/New



/proc/pick_n_take
/proc/pick_n_take

Does the problem occur:
Every time? Or how often? Every time
In other games? Unknown
In other user accounts? Unknown
On other computers? Definitely happens for at least two different clients, also two different server machines as explained above.

When does the problem NOT occur? When not on the "drinks" branch of my fork (linked above).

Did the problem NOT occur in any earlier versions? If so, what was the last version that worked? Unknown.

Workarounds:
None known