Question

I’m working on this very simple part of code, but somehow the build error is pretty strange to me.
I have these files in the project: main.c, http_request.h, http_request.c; and a simple Makefile.

1. http_request.h

/* STRUCTURES */
struct http_param {
    char    key[MAX_BUFFER];
    char    *value;
};

struct http_request {
    int     size;
    struct  http_param  data[MAX_PARAM];
};

/* FUNCTIONS */
int parse_http_request(apr_pool_t *pool, const char *args, struct http_request *req); /* (A) */

2. http_request.c

#include <http_request.h>
...// something else goes here, it's fine

int 
parse_http_request(apr_pool_t *pool, const char *args, struct http_request *req) /* (B) */
{

3. Makefile

-I$(PROJECT_DIR)/include

this directory contains http_request.h.

Then I build, it raises this error:

/project/src/http_request.c:14: warning: 'struct http_request' declared inside parameter list
/project/src/http_request.c:14: warning: its scope is only this definition or declaration, which is probably not what you want
/project/src/http_request.c: In function 'parse_http_request':

The error points to (A) and (B) as I mentioned in source code above.

Could anyone help to find out what the problem is?
Thanks.

Answer 1

I suspect, seeing that you use apr_pool_t, that you also have apache includes in your include path. apache also provides a file called http_request.h and that one gets included instead of the one you have.