EQEmulator Forums - Any C++ guru for help, or .. is it the wrong board ?

Duno if it is the place to post this, but playing around with the code, i get stuck by a crash in zone :

in NPC::Process() line 521 there is a call to AI_Process(). This refers to the parent's class Mob::AI_Process(). During the call, "this" changes to a wrong value.

Below is a gbd output, where frame 1 refers to AI_Process, and frame 2 to the caller's Process(). i read that "this" turns from 0x86885e0 (correct) to 0xbffff870 (incorrect, and obviously somewhere on the stack, where it does not belong IMHO)

am i just dumb at C++ ? is it a thread related ?

Code:

Program received signal SIGSEGV, Segmentation fault.

[Switching to Thread 16384 (LWP 27800)]

0x08715848 in ?? ()

Current language:  auto; currently c

(gdb) bt

#0  0x08715848 in ?? ()

#1  0x080e9833 in Mob::AI_Process() (this=0xbffff870) at MobAI.cpp:942

#2  0x080c496d in NPC::Process() (this=0x86885e0) at npc.cpp:521

#3  0x08092710 in EntityList::MobProcess() (this=0x82730a0)

    at linked_list.h:174

#4  0x080c6f9a in main (argc=5, argv=0x5f) at net.cpp:343

#5  0x4018dd06 in __libc_start_main () from /lib/libc.so.6

(gdb) frame 1

#1  0x080e9833 in Mob::AI_Process() (this=0xbffff870) at MobAI.cpp:942

942                             Mob* tmptar = entity_list.AICheckCloseArrgo(this, argo, assist);

Current language:  auto; currently c++

(gdb) print this->name

$1 = "\0\0\0\0\0\0i586\0/repository/vol313/bld/eqemu/bin/zone\0qeynos\0192.168."

(gdb) up

#2  0x080c496d in NPC::Process() (this=0x86885e0) at npc.cpp:521

521             AI_Process();

(gdb) print this->name

$2 = "Kinloc_Flamepaw's_pet00", '\0' &lt;repeats 40 times>

(gdb) l

516                             safe_delete(hp_app);

517                     }

518             }

519

520             adverrorinfo = 3;

521             AI_Process();

522             adverrorinfo = 0;

523         return true;

524

Thanks for any help. Sry if this is not the correct forum.