C++ VALGRIND Uninitialised value was created by a heap allocation - c++

Question

I have a problem. When I compile the program I don't have any errors, but when I use valgrind:
Uninitialized value was created by a heap allocation (line with new)
Conditional jump or move depends on uninitialized value(s)(line with delete)
I search through the forums however I didn't find much information which could help me.
I would be really grateful for a hint.
My program
#include <cstdlib>
#include <stdint.h>
#include <cstdio>
#include <iostream>
#include <string>
#include <istream>
#include <cstring>
#include <fstream>
#include <sstream>
#include <cctype>
using namespace std;
using std::cout;
using std::endl;
int dlugosc,miejsce;
ifstream file;
class channel
{
public:
int start;
double length;
int bytespix;
int resolution;
channel(double g) : start(g),
length(0),
bytespix(0),
resolution(0)
{
}
};
int fileopen() // opens the file and returns its size
{
file.open ("0_dlc.000", ios::in|ios::binary);
if( file.good() == true )
{
cout << "Uzyskano dostep do pliku!" << endl;
}
else
{
cout<< "File cannot open" <<endl;
}
file.seekg(0, file.end);
dlugosc = file.tellg();
return dlugosc;
}
int findword(const char* slowo,int startplace)
{
int m;
int c=0;
int cur=0;
unsigned int equal=0;
char element=0;
file.seekg (startplace, file.beg);
for(m=0;m<dlugosc;m++)
{
file.get(element);
if(element==slowo[cur])
{
equal++;
cur++;
}
else
{
equal=0;
cur=0;
if(element==slowo[cur])
{
equal++;
cur++;
}
}
if(equal==strlen(slowo))
{
return m+startplace;
}
}
return 0;
}
int findvalue(const char* wartosc,int startpoint)
{
int p;
int g;
char element=0;
char* buffer = new char[9];
miejsce = findword(wartosc,startpoint); // miejsce to global variable
file.seekg (miejsce+1, file.beg);
for(p=0;(int)element<58;p++)
{
file.get(element);
if((int)element>58 || (int)element<48)
break;
else
buffer[p] = element;
}
buffer[p]='\0';
g = atoi(buffer);
delete [] buffer;
return g;
}
int main()
{
int a,h=0,channels,start=0,length=0,resolution=0,bytespix=0,m=0;
const char* slowko="Data offset: ";
dlugosc=fileopen();
channel** kanaly=0;
kanaly = new channel*[9];
miejsce=0;
for(a=0;a<9;a++)
{
kanaly[a] = new channel(4);
start = findvalue("Data offset: ",miejsce+20);
kanaly[a]->start=start;
}
for(m=0;m<9;m++)
{
delete kanaly[m];
}
delete []kanaly;
file.close();
}

Answer 1

The problem is in the constructor of channel. Initialize all member variables, and the problem will go away :
class channel
{
public:
double start;
double length;
int bytespix;
int resolution;
channel(double g) : start(g),
length(0),
bytespix(0),
resolution(0)
{
}
};