Compile examples with -Werror

PUBLISHED_FROM=5a24bda9029db3fc7bf04dc871656d65d551f4ab

examples/examples.mk

 SOURCES = $(PROG).c ../../mongoose.c
-CFLAGS = -g -W -Wall -I../.. -Wno-unused-function $(CFLAGS_EXTRA) $(MODULE_CFLAGS)
+CFLAGS = -g -W -Wall -Werror -I../.. -Wno-unused-function $(CFLAGS_EXTRA) $(MODULE_CFLAGS)
 
 all: $(PROG)
 

examples/publish_subscribe/publish_subscribe.c

@@ -20,9 +20,10 @@
 
 static void *stdin_thread(void *param) {
   int ch, sock = *(int *) param;
+  // Forward all types characters to the socketpair
   while ((ch = getchar()) != EOF) {
     unsigned char c = (unsigned char) ch;
-    send(sock, &c, 1, 0);  // Forward all types characters to the socketpair
+    send(sock, (const char *) &c, 1, 0);
   }
   return NULL;
 }
@@ -75,7 +76,7 @@ int main(int argc, char *argv[]) {
     fprintf(stderr, "Usage: %s <port> <client|server>\n", argv[0]);
     exit(EXIT_FAILURE);
   } else if (strcmp(argv[2], "client") == 0) {
-    int fds[2];
+    sock_t fds[2];
     struct mg_connection *ioconn, *server_conn;
 
     mg_mgr_init(&mgr, NULL);

mongoose.c

@@ -6567,6 +6567,7 @@ static pid_t mg_start_process(const char *interp, const char *cmd,
   /* CloseHandle(pi.hThread); */
   /* CloseHandle(pi.hProcess); */
 
+  (void) envp;
   return pi.hProcess;
 }
 #else
@@ -8676,7 +8677,7 @@ static int mg_get_ip_address_of_nameserver(char *name, size_t name_len) {
       *key = "SYSTEM\\ControlSet001\\Services\\Tcpip\\Parameters\\Interfaces";
 
   if ((err = RegOpenKeyA(HKEY_LOCAL_MACHINE, key, &hKey)) != ERROR_SUCCESS) {
-    fprintf(stderr, "cannot open reg key %s: %d\n", key, err);
+    fprintf(stderr, "cannot open reg key %s: %ld\n", key, err);
     ret = -1;
   } else {
     for (ret = -1, i = 0;