map and pointer

15 Jun 2003

      Hi,

Why is the following code does not work; "delete(s)" causes segmentation
fault. But if I change the program to use "map m",
"delete(s)" will sucessfully run.

int main() {
    map m;

    string *s = new string("first");
    m[*s] = string("first value");

    s = new string("second");
    m[*s] = string("second value");

    map::iterator it = m.begin();
    for (int i = m.size(); i > 0; i--, it++) {
        const string* s = &(it->first);
        delete(s);    //this causes segmentation fault.
    }

    return 0;
}

TIA.

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