ID:2374768
 
Resolved
Malformed for() statements could cause a compiler crash.
BYOND Version:511
Operating System:Windows 10 Pro 64-bit
Web Browser:Chrome 65.0.3325.181
Applies to:Dream Maker
Status: Resolved (512.1427)

This issue has been resolved.
Following code crushes Dream Maker. It's not super important bug since nobody would write for loop like that but still...

mob/Login()
for(,)
world << 1
sleep(10)

This isn't a bug.

You should NEVER sleep in Login().
Lummox JR resolved issue with message:
Malformed for() statements could cause a compiler crash.
In response to Ter13
Ter13 wrote:
You should NEVER sleep in Login().

Agreed of course, although the for() being broken in a specific way that crashed the compiler was the real problem.