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Re: gcc issue



On Wed, Feb 04, 2009 at 10:35:09AM -0500, Steve wrote:
> On my fully-up-to-date F9 system, this file, junk.c:
> 
> #include <netinet/in.h>
> 
> struct my_struct {
> 	struct	in6_addr	ipi6_addr;
> 	unsigned int	ipi6_ifindex;
> };
> 
> int main ( int argc, char **argv )
> {
> 	int			x,y;
> 	struct	in6_pktinfo	junk;
> 	struct	my_struct	junk2;
> 
> 	x = sizeof (junk);
> 	y = sizeof (junk2);
> }
> 
> when compiled gives this error:
> $ gcc -c junk.c
> junk.c: In function ‘main’:
> junk.c:12: error: storage size of ‘junk’ isn’t known

Compile with
gcc -D_GNU_SOURCE -c junk.c
as struct in6_pktinfo is a GNU extension.
info libc 'Feature Test Macros'
for more info.

	Jakub


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