cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations sys_socket/struct-msghdr-msg_controllen.c -o sys_socket/struct-msghdr-msg_controllen -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lcrypt -latomic
sys_socket/struct-msghdr-msg_controllen.c: In function ‘foo’:
sys_socket/struct-msghdr-msg_controllen.c:4:26: error: initialization of ‘socklen_t *’ {aka ‘unsigned int *’} from incompatible pointer type ‘size_t *’ {aka ‘long unsigned int *’} [-Wincompatible-pointer-types]
    4 |         socklen_t *qux = &bar->msg_controllen;
      |                          ^