I am getting a random crash with the following error :
Malloc Check Failed: :/builds/660_SDP/svn/lib/c/alloc/band.c:492
I am using Momentics 5.0 & Qnx 6.6 .

from the core dump I can see that malloc is failing is for std::string objects & operations which I am using in my code 
. 

Is this purely a memory fragmentation which is very unlikely since the application doesn't show any leak & crash occurs 
also after it has been running for a short time ? or some sort of memory corruption ? 

Momentics memory analysis tool doesn't show up anything .
any pointers wud be helpful ? looking for points to investigate ?