fix MSVC compiler warning 'conditional expression is constant'

diff --git a/acountry.c b/acountry.c
index d989018..e33e0f8 100644 (file)
--- a/acountry.c
+++ b/acountry.c
@@ -89,7 +89,7 @@ static int         verbose    = 0;
 #define TRACE(fmt) do {               \
                      if (verbose > 0) \
                        printf fmt ;   \
-                   } while (0)
+                   } WHILE_FALSE
 
 static void wait_ares(ares_channel channel);
 static void callback(void *arg, int status, int timeouts, struct hostent *host);

diff --git a/ares_init.c b/ares_init.c
index 44d4cf9..dd59fed 100644 (file)
--- a/ares_init.c
+++ b/ares_init.c
@@ -1216,7 +1216,7 @@ static int init_by_defaults(ares_channel channel)
         goto error;
       }
 
-    } while(0);
+    } WHILE_FALSE;
 
     dot = strchr(hostname, '.');
     if (dot) {

diff --git a/ares_private.h b/ares_private.h
index ff45ba7..3c56bbc 100644 (file)
--- a/ares_private.h
+++ b/ares_private.h
@@ -342,7 +342,7 @@ long ares__tvdiff(struct timeval t1, struct timeval t2);
   do {                                                                  \
     if ((c)->sock_state_cb)                                             \
       (c)->sock_state_cb((c)->sock_state_cb_data, (s), (r), (w));       \
-  } while (0)
+  } WHILE_FALSE
 
 #ifdef CURLDEBUG
 /* This is low-level hard-hacking memory leak tracking and similar. Using the