Bug#100535: gcc-3.0-20010610 refuses to compile correct (?) code

[Daniel Jacobowitz <dan@debian.org>]

On Mon, Jun 11, 2001 at 10:33:33PM +0200, Petr Vandrovec wrote:
> Package: gcc-3.0
> Version: 3.0-0pre010609
> 
> Hi,
>   gcc_3.0-3.0-0pre010609 refuses to compile Linux kernel
> because of it does not treat following code as correct
> anymore. gcc-2.95.4-20010604 and gcc-3.0-20010426 both
> compile this code without any complaints.
> 
> -------
> #include <sys/time.h>
> 
> extern struct timeval xtime;
> 
> volatile struct timeval xtime;
> -------
> 
> vana:~$ gcc -c -W -Wall xx.c
> xx.c:5: conflicting types for `xtime'
> xx.c:3: previous declaration of `xtime'
> vana:~$ gcc-2.95 -c -W -Wall xx.c
> vana:~$

I'd call that a kernel bug.  The extern definition is substantially
worse than useless without the volatile keyword present in it!

-- 
Daniel Jacobowitz                           Debian GNU/Linux Developer
Monta Vista Software                              Debian Security Team