[SOLVED] typedef functions contain structure?

yaplej · 08-18-2014, 08:17 AM

Hello all,

I have defined the following function type and structure.

Code:

typedef int (*t_epoll_callback)(struct epoll_server *, int, void *);
typedef void (*cb_epoll_timeout)(struct epoll_server *);

struct epoll_server {
	int socket;
	int epoll_fd;
	struct epoll_event event;
	struct epoll_event *events;
	t_epoll_callback secure;
	t_epoll_callback callback;
	cb_epoll_timeout timeoutfunction;
	int timeout;
};

When this compiles I get a complaint:

Code:

warning: ‘struct epoll_server’ declared inside parameter list
warning: ‘struct epoll_server’ declared inside parameter list

I think this is also causing me to get odd warnings when I pass a function as parameter with this type.

Code:

warning: passing argument 2 of ‘new_ip_epoll_server’ from incompatible pointer type
note: expected ‘t_epoll_callback’ but argument is of type ‘int (*)(struct epoll_server *, int,  void *)’

So one way to fix it would be to just use a (void *) instead of my (struct epoll_server *) maybe?

pan64 · 08-18-2014, 08:30 AM

probably the order, struct epoll_server is unknown at that point. Also you may try to typedef that struct too.

ophirg · 08-18-2014, 08:50 AM

Hi

you need declare the struct

Code:

 struct epoll_server;

before the typedefs. This way you can use epoll_server before you define it.

yaplej · 08-18-2014, 08:55 AM

Thank you. Declaring it before defining it worked great. That was to easy