Fix strict aliasing issue which GCC 4.4 complained about.

While we know that "struct sockaddr_storage" has been engineered to alias
to all the sockaddr structs, the compiler does not know about this.
Thus, code like this may be unsafe to use:

struct sockaddr_storage ss;
struct sockaddr_in *sin = &ss;
sin->sin_port = 0; /* dereferencing here breaks ISO C aliasing rules */

A workaround is to wrap the struct in a union, e.g:
union anonymous {
  struct sockaddr_storage ss;
  struct sockaddr_in sin;
} u;
u.sin.sin_port = 0;
--
Approved by: joerg

0 files changed, 0 insertions, 0 deletions