Matthias Bolte wrote: [Thu Jul 30 2009, 06:04:40AM EDT]
2009/7/30 Mark McLoughlin <markmc@redhat.com>:
On Thu, 2009-07-30 at 02:58 +0200, Matthias Bolte wrote:
The follow change makes GCC happy again:
- struct ifreq ifr = {0}; + struct ifreq ifr = {{{0}}, {{0, {0}}}};
AFAIR, this works?
struct ifreq ifr = {0,};
Cheers, Mark.
No, it doesn't, I tested it. The problem is the internal structure of ifreq. GCC complains until the initializer matches this structure. Or use memset like all other bridge functions do:
struct ifreq ifr; memset(&ifr, 0, sizeof(struct ifreq));
It's unfortunate, really... In general, one would prefer to ask the compiler for a zeroed structure on the stack than to call memset, which clutters the code and reduces the opportunity for the compiler to optimize. For arrays, {0} works with -Wall -Werror; the unspecified elements are zeroed. But it looks like there's no simple zero-initializer for structs. Aron