Cause of a seg fault (core dumped)
Im running a program that takes several days to run and think I know the cause... I didnt run it in gdb so I have no idea exactly besides a hint at where it is. Is this a possible cause?
Looking back, I foolish, tried to open and then write to an illegal memory location (i think at least). The situation being that I opened a file in a directory that doesn't exist to then write in it. Could that be the cause -- since it wasn't a created directory?
Are you actually not checking whether your fopen (or equivalent) call didn't succeed? Really? Yes writing to a file handle that isn't open can do bad things.
Yes... That's one of the reasons I said foolish :P...Originally Posted by tabstop
Ughh...
Check with:
if(file == NULL) printf("fail");
?
file will be NULL if it didn't open, that's correct. And you'll want to do more than just print "fail" -- find a proper file, or give it up and abort. If your program has already been running for days and days, the first is obviously more appealing.
