Added -Wextra to C flags.

Makefile

@@ -1,6 +1,6 @@
 PREFIX=/usr/local
 PREFIX_MAN=$(PREFIX)/man
-CFLAGS?=-g -Wall
+CFLAGS?=-g -Wall -Wextra
 
 all: snac
 

activitypub.c

@@ -1524,6 +1524,8 @@ int activitypub_post_handler(const xs_dict *req, const char *q_path,
                              char **body, int *b_size, char **ctype)
 /* processes an input message */
 {
+    (void)b_size;
+
     int status = 202; /* accepted */
     char *i_ctype = xs_dict_get(req, "content-type");
     snac snac;

html.c

@@ -1551,6 +1551,9 @@ int html_post_handler(const xs_dict *req, const char *q_path,
                       char *payload, int p_size,
                       char **body, int *b_size, char **ctype)
 {
+    (void)p_size;
+    (void)ctype;
+
     int status = 0;
     snac snac;
     char *uid, *p_path;

httpd.c

@@ -49,6 +49,8 @@ int server_get_handler(xs_dict *req, char *q_path,
 {
     int status = 0;
 
+    (void)req;
+
     /* is it the server root? */
     if (*q_path == '\0') {
         /* try to open greeting.html */
@@ -285,6 +287,8 @@ static jmp_buf on_break;
 
 void term_handler(int s)
 {
+    (void)s;
+
     longjmp(on_break, 1);
 }
 
@@ -401,6 +405,8 @@ static void *background_thread(void *arg)
 {
     time_t purge_time;
 
+    (void)arg;
+
     /* first purge time */
     purge_time = time(NULL) + 10 * 60;
 

mastoapi.c

@@ -175,6 +175,8 @@ const char *login_page = ""
 int oauth_get_handler(const xs_dict *req, const char *q_path,
                       char **body, int *b_size, char **ctype)
 {
+    (void)b_size;
+
     if (!xs_startswith(q_path, "/oauth/"))
         return 0;
 
@@ -227,6 +229,9 @@ int oauth_post_handler(const xs_dict *req, const char *q_path,
                        const char *payload, int p_size,
                        char **body, int *b_size, char **ctype)
 {
+    (void)p_size;
+    (void)b_size;
+
     if (!xs_startswith(q_path, "/oauth/"))
         return 0;
 
@@ -815,6 +820,8 @@ int process_auth_token(snac *snac, const xs_dict *req)
 int mastoapi_get_handler(const xs_dict *req, const char *q_path,
                          char **body, int *b_size, char **ctype)
 {
+    (void)b_size;
+
     if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
         return 0;
 
@@ -1474,6 +1481,9 @@ int mastoapi_post_handler(const xs_dict *req, const char *q_path,
                           const char *payload, int p_size,
                           char **body, int *b_size, char **ctype)
 {
+    (void)p_size;
+    (void)b_size;
+
     if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
         return 0;
 
@@ -1898,6 +1908,9 @@ int mastoapi_put_handler(const xs_dict *req, const char *q_path,
                           const char *payload, int p_size,
                           char **body, int *b_size, char **ctype)
 {
+    (void)p_size;
+    (void)b_size;
+
     if (!xs_startswith(q_path, "/api/v1/") && !xs_startswith(q_path, "/api/v2/"))
         return 0;
 

webfinger.c

@@ -104,6 +104,8 @@ int webfinger_get_handler(d_char *req, char *q_path,
 {
     int status;
 
+    (void)b_size;
+
     if (strcmp(q_path, "/.well-known/webfinger") != 0)
         return 0;