Getting munmap_chunk(): invalid pointer

[Rohith R]

Hi Wim,

I have a module XYZ inside sniper written in C++ and I have placed it in SNIPER_ROOT/common/XYZ
It has some files XYZ.h and XYZ.cpp which sniper automatically compiles. I use this module in scheduler_pinned.cc

But it gives me this error :

*** Error in `/home/n1603031f/sniper/sniper-6.1/lib/sniper': munmap_chunk(): invalid pointer: 0x00000000013ae4e0 ***
[SNIPER] End
[SNIPER] Elapsed time: 103.61 seconds

The simulation works fine. This error doesn't affect the output as I have a valid sim.out file. But this sure looks ugly while seeing the output.

I believe my code for the module is correct and doesn't have any memory leaks as I am not doing anything fancy there.

The module looks something like :

class Helper
{
    // Some fields
    // Some member functions
}
class Constants
{
    static constexpr double C0 = 1.0;
    // and many such variables
}
class XYZ
{
    vector<Helper> someVector;

    XYZ()
    {    
        someVector.resize(Sim()->getConfig()->getApplicationCores());
    }
}

Is there any way to solve this. I know this is very less information. But when I comment out the code which doesn't use this module, I don't get this error.

Any help or advice in this context will be helpful.

Regards,
Rohith R

[Wim Heirman]

Hi Rohith,

This looks like memory corruption, the most likely cause is that you are accessing the vector out-of-bounds.

Regards,

Wim

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