Getting segmentation fault after destructor
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Published on 2010-03-28T08:07:04Z
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2010/03/28
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I'm making a small file reading and data validation program as part of my TAFE (a tertiary college) course, This includes checking and validating dates.
I decided that it would be best done with a seperate class, rather than integrating it into my main driver class.
The problem is that I'm getting a segmentation fault(core dumped) after my test program runs. Near as I can tell, the error occurs when the program terminates, popping up after the destructor is called. So far I have had no luck finding the cause of this fault, and was hoping that some enlightened soul might show me the error of my ways.
date.h
#ifndef DATE_H
#define DATE_H
#include <string>
using std::string;
#include <sstream>
using std::stringstream;
#include <cstdlib>
using std::exit;
#include <iostream>
using std::cout;
using std::endl;
class date {
public:
explicit date();
~date();
bool before(string dateIn1, string dateIn2);
int yearsBetween(string dateIn1, string dateIn2);
bool isValid(string dateIn);
bool getDate(int date[], string dateIn);
bool isLeapYear(int year);
private:
int days[];
};
#endif
date.cpp
#include "date.h"
date::date() {
days[0] = 31;
days[1] = 28;
days[2] = 31;
days[3] = 30;
days[4] = 31;
days[5] = 30;
days[6] = 31;
days[7] = 31;
days[8] = 30;
days[9] = 31;
days[10] = 30;
days[11] = 31;
}
bool date::before(string dateIn1, string dateIn2) {
int date1[3];
int date2[3];
getDate(date1, dateIn1);
getDate(date2, dateIn2);
if (date1[2] < date2[2]) {
return true;
} else if (date1[1] < date2[1]) {
return true;
} else if (date1[0] < date2[0]) {
return true;
}
return false;
}
date::~date() {
cout << "this is for testing only, plox delete\n";
}
int date::yearsBetween(string dateIn1, string dateIn2) {
int date1[3];
int date2[3];
getDate(date1, dateIn1);
getDate(date2, dateIn2);
int years = date2[2] - date1[2];
if (date1[1] > date2[1]) {
years--;
}
if ((date1[1] == date2[1]) && (date1[0] > date2[1])) {
years--;
}
return years;
}
bool date::isValid(string dateIn) {
int date[3];
if (getDate(date, dateIn)) {
if (date[1] <= 12) {
int extraDay = 0;
if (isLeapYear(date[2])) {
extraDay++;
}
if ((date[0] + extraDay) <= days[date[1] - 1]) {
return true;
}
}
} else {
return false;
}
}
bool date::getDate(int date[], string dateIn) {
string part1, part2, part3;
size_t whereIs, lastFound;
whereIs = dateIn.find("/");
part1 = dateIn.substr(0, whereIs);
lastFound = whereIs + 1;
whereIs = dateIn.find("/", lastFound);
part2 = dateIn.substr(lastFound, whereIs - lastFound);
lastFound = whereIs + 1;
part3 = dateIn.substr(lastFound, 4);
stringstream p1(part1);
stringstream p2(part2);
stringstream p3(part3);
if (p1 >> date[0]) {
if (p2>>date[1]) {
return (p3>>date[2]);
} else {
return false;
}
return false;
}
}
bool date::isLeapYear(int year) {
return ((year % 4) == 0);
}
and Finally, the test program
#include <iostream>
using std::cout;
using std::endl;
#include "date.h"
int main() {
date d;
cout << "1/1/1988 before 3/5/1990 [" << d.before("1/1/1988", "3/5/1990")
<< "]\n1/1/1988 before 1/1/1970 [" << d.before("a/a/1988", "1/1/1970")
<<"]\n";
cout << "years between 1/1/1988 and 1/1/1998 ["
<< d.yearsBetween("1/1/1988", "1/1/1998") << "]\n";
cout << "is 1/1/1988 valid [" << d.isValid("1/1/1988") << "]\n"
<< "is 2/13/1988 valid [" << d.isValid("2/13/1988") << "]\n"
<< "is 32/12/1988 valid [" << d.isValid("32/12/1988") << "]\n";
cout << "blerg\n";
}
I've left in some extraneous cout statements, which I've been using to try and locate the error.
I thank you in advance.
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