Getting sporadic segmentation fault (core dump)

[jjwooyoung]

Hi,

When I debug in visual studio and step through every line of a function, there is no seg fault. But if I just step over it, there is a seg fault...

If I compile it on my school server, there is a sporadic seg fault, meaning there is no pattern as to when it happens. I think it might have something to do with the srand and rand???

#include <cstdlib>
#include <ctime>

int sixSidedDice = 0;
	
	for (int i = 0; i < 2; i++) {
		unsigned seed = time(0);
		srand(seed);
		sixSidedDice += (rand() % 6) + 1;
	}

	doSomething(sixSidedDice);

[firedraco]

As of now, that code shouldn't compile. Could you post your whole program please?

[jlb]

Also you should only call srand() once, usually early in main().

[jjwooyoung]

see next post...

[jjwooyoung]

There seems to be an error with __time64_t __cdecl _time64
It seems timeptr couldn't be evaluated, thus resulting in unable to read memory

It stopped at this line in time64.c
tim = (__time64_t)((nt_time.ft_scalar - EPOCH_BIAS) / 10000000i64);

Anyone know what this mean?

Edit: I think I fixed it. It seems jlb was correct, I didn't need to call srand() multiple times. I was doing it at least two times each derived class.