#10 Segmentation fault when using class method containing vector push_back inside OpenThreads::Thread run method.

[Mithun Mohan]

I am encountering segmentation fault in the following piece of code using OpenThreads::Thread.
I am running it in a linux environment which is SUSE Linux Enterprise Server 11 (x86_64), with the kernel version being Linux sfs-imcbuild-01 3.0.101-0.47.52-default.

class CMirroringHelper
{
public:

CMirroringHelper()
{
std::cout<<"Mirror Helper Constructor called"<<std::endl;
vecMir.reserve(100);
std::cout<<"Mirror Helper Vector capacity"<<vecMir.capacity()<<std::endl;
}
void MirroringHelperInit()
{
std::string it = "adf";
m_i = 4567;
vecMir.push_back(123); //Cause of Segmentation Fault
std::cout<<"The point of danger "<<m_i<<std::endl;
}
int m_i;

private:

std::vector <int> vecMir;
};

class CPurgerThread : public OpenThreads::Thread
{
public:
CPurgerThread();

virtual ~CPurgerThread();

virtual void run();

void stopThread();

private:
std::multiset<CTempLogElem> setTempLogElems;
std::vector< CLogPurger* > m_vLogPurger;
CMirroringHelper m_pMirroringHelper;
};

The issue happens when m_pMirroringHelper.MirroringHelperInit is called inside the run method of class CPurgerThread. When I am using vecMir[some_index] = 123, the program do not run into segmentation fault, only the push_back is causing the issue which I believe may be due to internal allocation in vector push_back method, which may have caused some kind of scope issue. Also when "m_pMirroringHelper" was declared as a pointer and then allocated using new in CPurgerThread, the program did not run into segmentation fault. I also tried declaring vecMir as a vector pointer inside CMirroringHelper, but it still ran into segmentation fault.
This issue was not seen in Visual Stuudio 2010 vc10 on Windows 7.

Thanks
MithunMohan