I have both gcc 2.95.4 and gcc 3.0.2 installed. Both of them compiled
this C program (this is the entire thing) :
-----------
int
main()
{
puts( uname() ) ;
return 0 ;
}
-----------
Why does this compile without any errors? (no options were given to
gcc) Why don't I need to include stdio.h or sys/utsname.h? After I
looked at the docs (I just wanted to see what the function would
return) I saw that it returns an int to indicate success/failure and
takes a pointer to a struct utsname as an out-argument. (the program
above naturally seg faults) I get the same sort of effect with
gethostbyname() (I should include netdb.h, it takes a string argument
and returns a pointer to a struct hostent).
The other thing that strikes me as odd, is the following portion of
the struct utsname definition (in the manpage) :
#ifdef _GNU_SOURCE
char domainname[SYS_NMLN] ;
#endif
The odd part is that the 'domainname' member isn't present because
_GNU_SOURCE isn't defined on my system.
-D
--
Commit to the Lord whatever you do,
and your plans will succeed.
Proverbs 16:3
