the use of `tempnam' is dangerous

[hasmik]

Hi all.

I have a C++ code

#include <stdio.h>

int main ()
{
    char n1 [L_tmpnam];
    char * n2;

    tmpnam (n1);
    printf ("Tempname #1: %s\n",n1);

    n2 = tmpnam (NULL);
    printf ("Tempname #2: %s\n",n2);

    return 0;
}

I compiled it with this command:
g++ tmpnam.cc

and got this warning:

/tmp/cc6NCfHE.o: In function `main':
tmpnam.cc:(.text+0x18): warning: the use of `tmpnam' is dangerous, better use `mkstemp'

Can anyone help me to understand the reason of this warning?

Thanks,
Hasmik.

[lloydchristmas759]

See "NOTES" section in 'man tmpnam'.

[hasmik]

Hi,

Thanks for advice.

I have read it, and now i want to know is there a way to disable this warning?

Regards,
Hasmik.

[choisum]

g++ tmpnam.cc 2>&1 | grep -v "'tmpnam' is dangerous" :)

otherwise, there may be a compiler directive (e.g. #pragma) somewhere...

Pretty sure I did this for some other annoying warning in g++.

[hasmik]

Thanks for help.