How to solve exit code 139 error when reading from file on unix

Question

So I believe this is just a problem on unix and that it occurs at the first fscanf if the Clion debugger was right, but I don't know why I get the error- Process finished with exit code 139 (interrupted by signal 11: SIGSEGV) - why?

struct loginInformation
{
    char username[USERNAME_LENGTH];
    char password[PASSWORD_LENGTH];
    int type;
}accounts[NUM_OF_ACCOUNTS];

void createAccountsFromFile()
{
    FILE *input = fopen("accounts.txt", "r");
    int counter;
    for(counter = 0; counter < NUM_OF_ACCOUNTS; counter++)
    {
        fscanf(input, "%s", accounts[counter].username);
        fscanf(input, "%s", accounts[counter].password);
        fscanf(input, "%d", &accounts[counter].type);
    }
}

int main()
{
    createAccountsFromFile();
}

accounts.txt

user1
pass1
0
user2
pass2
1
user3
pass3
2
user4
pass4
3

Answer 1

It means the program crashed before it exited. You need to debug the program. For example, you need to check whether the file is successfully opened after fopen.

Answer 2

SIGSEGV are not always thrown due to a root cause of memory access problems...

Perl throws a 139 on Unix usually because of file I/O. You might have accidentally deleted your input files.