sizeof(struct sockaddr_storage) is smaller than sizeof(struct sockaddr_in6)

[surfskidude]

My understanding is that sockaddr_storage must be >= sockaddr_in6

I am working on porting a network app and got a weird compiler error so I added the following to my code for test purposes (static analysis):

char PATCH1[sizeof(struct sockaddr_storage) - sizeof(struct sockaddr_in6)];

char PATCH2[sizeof(struct sockaddr_in6) - sizeof(struct sockaddr_storage)];

The compiler tells me PATCH1 is too big, meaning we got a negative number.

I am compiling with: west build -p auto -b native_posix_64 .......

[rlubos]

Do you enable CONFIG_NET_IPV6? If not, struct sockaddr_storage will have a size of struct sockaddr_in.

[surfskidude]

Oops, no, sorry. That did the trick :-)