Question

So I wrote an implementation of an ArrayList over the summer, and I have a toString method within which I use an ostringstream object to tack on strings and then output them.

the method is below:

template<class T>
std::string ArrayList<T>::toString() {

    std::ostringstream streamOut;

    streamOut << "(";

    for (int i = 0; i < size; i++) {

        streamOut << array[i];

        if (i != (size - 1)) {

            streamOut << ", ";
        }
    }

    streamOut << ")\n";

    std::string returnString = streamOut.str();

    return returnString;
}

The problem is that when I run this program it sometimes crashes on the line in the above method:

    streamOut << "(";

I tried adding a flush statement at the end but that didn’t do the trick…I really have no idea what could be wrong here.

I think this issue may be related but I can’t be sure….

https://stackoverflow.com/questions/8250851/big-ostringstream-causes-application-crash

EDIT:

I forgot to mention, that I am using eclipse for development, and I have been unable to get a crash of the program to occur when I run it in eclipse. It’s only when I run the exe generated via windows or the command line that it crashes

Answer 1

I think it crashed because somewhere before this method incorrectly free the memory.