Hey, I am working on a drum machine, and am having problems with vectors.

Each Sequence has a list of samples, and the samples are ordered in a vector. However, when a sample is push_back on the vector, the sample's destructor is called, and results in a double free error.

Here is the Sample creation code:

class XSample
{
  public:
    Uint8 Repeat;
    Uint8 PlayCount;
    Uint16 Beats;
    Uint16 *Beat;
    Uint16 BeatsPerMinute;

    XSample(Uint16 NewBeats,Uint16 NewBPM,Uint8 NewRepeat);
    ~XSample();

    void GenerateSample();

    void PlaySample();
};

XSample::XSample(Uint16 NewBeats,Uint16 NewBPM,Uint8 NewRepeat)
{
    Beats = NewBeats;
    BeatsPerMinute = NewBPM;
    Repeat = NewRepeat-1;
    PlayCount = 0;

    printf("XSample Construction\n");
    Beat = new Uint16[Beats];
}

XSample::~XSample()
{
    printf("XSample Destruction\n");
    delete [] Beat;
}

And the 'Dynamo' code that creates each sample in the vector:

class XDynamo
{
  public:
    std::vector<XSample> Samples;

    void CreateSample(Uint16 NewBeats,Uint16 NewBPM,Uint8 NewRepeat);
};

void XDynamo::CreateSample(Uint16 NewBeats,Uint16 NewBPM,Uint8 NewRepeat)
{
    Samples.push_back(XSample(NewBeats,NewBPM,NewRepeat));
}

Here is main():

int main()
{
    XDynamo Dynamo;

    Dynamo.CreateSample(4,120,2);
    Dynamo.CreateSample(8,240,1);

    return 0;
}

And this is what happens when the program is run:

Starting program: /home/shawn/dynamo2/dynamo 
[Thread debugging using libthread_db enabled]
XSample Construction
XSample Destruction
XSample Construction
XSample Destruction
*** glibc detected *** /home/shawn/dynamo2/dynamo: double free or corruption (fasttop): 0x0804d008 ***

However, when the delete [] is removed from the destructor, the program runs perfectly.

What is causing this? Any help is greatly appreciated.