.:: Bots United ::. - Bug-NUM_FOR_EDICT Error: Bad Pointer

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.:: Bots United ::. (http://forums.bots-united.com/index.php)

- Bug Reports (http://forums.bots-united.com/forumdisplay.php?f=49)

- - Bug-NUM_FOR_EDICT Error: Bad Pointer (http://forums.bots-united.com/showthread.php?t=1586)

sPlOrYgOn

15-05-2004 01:08

Re: Bug-NUM_FOR_EDICT Error: Bad Pointer

well it doesn't exactly crash..
hlds shuts down the server properly with a -1 return..
and if you try it with a calculator 0/0 is undefined/error.
the compiler even warns me that there could be a zero divide.

[edit]
well i've changed it to

Code:

if (iEdictNum == 0) iEdictNum = 1 / iEdictNum;

still it does NOT go through with this or the other thing..
I REALLY think something else is doing it..
[/edit]

Whistler

15-05-2004 04:32

Re: Bug-NUM_FOR_EDICT Error: Bad Pointer

Quote:

Originally Posted by Pierre-Marie Baty

Code:

void TerminateOnError (const char *fmt, ...)

{

   va_list argptr;

   char string[1024];

 

   // concatenate all the arguments in one string

   va_start (argptr, fmt);

   vsprintf (string, fmt, argptr); // this isn't secure, and may cause buffer overrun.

   // I would suggest you change it to: _vsnprintf(string, sizeof(string), fmt, argptr);

   va_end (argptr);

......

}

...comments above :)

sPlOrYgOn

15-05-2004 06:58

Re: Bug-NUM_FOR_EDICT Error: Bad Pointer

Okay I got a new plan of action!
How about everyone who crashes a lot post all the maps they crash at...
Maybe we can find some similarities between them and see what the bot does wrong with the certain thing..
so far I only crash on cs_office.

[edit]
new info...
only ENTINDEX can cause a "NUM_FOR_EDICT: bad pointer" error..
if INDEXENT was causing the error it would be "EDICT_NUM: bad number %i".
[/edit]

Dethpod

15-05-2004 19:07

Re: Bug-NUM_FOR_EDICT Error: Bad Pointer

sPlOrYgOn,

You got it. I will start compiling a list of maps that PodBot2.1-mm crashes on.

-Dethpod

Pierre-Marie Baty

15-05-2004 19:30

Re: Bug-NUM_FOR_EDICT Error: Bad Pointer

Well that is very nice Whistler, but tell me, why on this frikkin Earth would I want to check for possible h@x0r 3xpl0its and buffer overflows on a function that I myself have written and that I myself am the only one using ??? o_O

/me gonna practice breaking into my own code now...

sPlOrYgOn

15-05-2004 19:33

Re: Bug-NUM_FOR_EDICT Error: Bad Pointer

sorry Dethpod but I found a way to break point when Sys_Error is called..
I'm testing it right now..
It stopped at the break point but it's currently inside the Sys_Error function..
I built the dll with debug info during the compiling and the linking.
my call stack says

Quote:

PODBOT_MM! Sys_Error(char const *) + 27 bytes
METAMOD! 6b2644e6()

[edit]
after some more work I now know that the last call to ENTINDEX is from pfnMessageBegin.
[/edit]
[edit2]
well I can't seem to solve it because in pfnMessageBegin it already runs FNullEnt against the Edict.
I also tried STRING (ed->v.classname)[0] == 0 still no.
If I remember correctly pfnMessageBegin shouldn't catch message calls in the bot dll..
So that means the game dll is using MESSAGE_BEGIN with a messed up edict?
[/edit2]

biohazerd87

16-05-2004 04:33

Re: Bug-NUM_FOR_EDICT Error: Bad Pointer

So does this mean we have figured out the problem or are we still working on it?

Whistler

16-05-2004 04:36

Re: Bug-NUM_FOR_EDICT Error: Bad Pointer

like this, if ANY user connected to a server running RACC typed a command which is more than 128 characters will cause buffer overrun and crash the server...

Code:

      char pcmd[129]; // no way, I hate pointers...

      char arg1[129];

      char arg2[129];



      strcpy (pcmd, CMD_ARGV (0));

      strcpy (arg1, CMD_ARGV (1));

      strcpy (arg2, CMD_ARGV (2));

Pierre-Marie Baty

16-05-2004 23:37

Re: Bug-NUM_FOR_EDICT Error: Bad Pointer

Nice try Whistler, but I know that already, that wouldn't work ;)
It is impossible for a HL client to send a client command of more than 128 bytes long :P

it's not to an old monkey that one can teach how to pull funny faces :D

/me pulls funny face

biohazerd87

17-05-2004 17:21

Re: Bug-NUM_FOR_EDICT Error: Bad Pointer

So have you fixed the NUM_FOR_EDICT error? or are we still waiting

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