DreamDaemon Crashes

ID:1324640
 
Jul 14 2013, 10:24 pm
BYOND Version:499.1199
Operating System:Windows 7 Pro 64-bit
Web Browser:Chrome 28.0.1500.72
Applies to:Dream Daemon
Status: Unverified
Thus far we've been unable to verify or reproduce this bug. Or, it has been observed but it cannot be triggered with a reliable test case. You can help us out by editing your report or adding a comment with more information.
Related code is this on mob.Logout()
var/savefile/f = new()
f << src
world.Export("blahblah", f)
del src



Faulting application name: dreamdaemon.exe, version: 4.0.499.1199, time stamp: 0x51d4b9ba
Faulting module name: byondcore.dll, version: 4.0.499.1199, time stamp: 0x51d4b985
Exception code: 0xc0000005
Fault offset: 0x000962a3
Faulting process id: 0x270
Faulting application start time: 0x01ce812b94b544ff
Faulting application path: C:\Program Files (x86)\BYOND\bin\dreamdaemon.exe
Faulting module path: C:\Program Files (x86)\BYOND\bin\byondcore.dll
Report Id: 2be48b5f-ed1f-11e2-8e4b-20cf30e81171
Jul 15 2013, 6:23 am
Your crash info says that's 1199.
Jul 15 2013, 7:11 am
Does your mob contain any /icon vars (not mob.icon, but an actual /icon datum), anything related to zipfiles, or anything using databases?
Jul 15 2013, 8:48 am
Mob structure for this test was:

atom/movable
    animate_movement = SLIDE_STEPS
    var/speed = 1
    var/tmp/move_time = 0
    var/tmp/transferring = 0
mob
    icon = 'mob.dmi'

mob/player
    icon_state = "player"

    var/hp = 100
    var/maxhp = 100

    var/attack = 4
    var/defense = 6

    var/server_loc = ""

    var/instance = ""

    var/server = ""

    var
        last_x = 0
        last_y = 0
        last_z = 0

    var/tmp
        north = 0
        south = 0
        east = 0
        west = 0
mob/player/var/list/party = list()


And in write, I was doing this:

mob/player
    Write(savefile/F)
        ..()
        F["server"] << world.url
        F["last_x"] << x
        F["last_y"] << y
        F["last_z"] << z
        F["icon"] << null
        F["overlays"] << null
        F["underlays"] << null
Jul 15 2013, 9:38 am
Weird. According to my trace, the crash occurred in DecRefCount() for an internal object of the kind used by the /icon datum (and others, but mostly by /icon). But your structure there shows nothing of the sort. Then again, this same code might have been reused by a different function, so I'm still looking.
Jul 16 2013, 1:26 pm
I'm posting a followup on research I've been doing on this bug, both yesterday and today. The crash is most definitely happening in DecRefCount() for an internal object. These objects are only used by the /icon datum, zipfiles, and database connections; I believe the culprit is an /icon datum--if not in the mob itself, then in the mob's contents or in something connected to it.

Per my chat with FIREking, the code has since changed and this crash is no longer occurring, so there is no way to determine the cause of the failure. As a result I'm moving this to Unverified until we have a more concrete test bed.
Jul 16 2013, 1:27 pm
Lummox JR changed status to 'Unverified'