Problem: Multiple fd_t definitions

Solution: Unify definition

src/fd.hpp

@@ -36,18 +36,15 @@
 
 namespace zmq
 {
+typedef zmq_fd_t fd_t;
+
 #ifdef ZMQ_HAVE_WINDOWS
 #if defined _MSC_VER && _MSC_VER <= 1400
-///< \todo zmq.h uses SOCKET unconditionally, so probably VS versions before
-/// VS2008 are unsupported anyway. Apart from that, this seems to depend on
-/// the Windows SDK version rather than the VS version.
-typedef UINT_PTR fd_t;
 enum
 {
     retired_fd = (fd_t) (~0)
 };
 #else
-typedef SOCKET fd_t;
 enum
 #if _MSC_VER >= 1800
   : fd_t
@@ -57,7 +54,6 @@ enum
 };
 #endif
 #else
-typedef int fd_t;
 enum
 {
     retired_fd = -1

tests/test_poller.cpp

@@ -209,7 +209,7 @@ void test_null_poller_pointers_wait_all_indirect ()
 void test_null_poller_pointer_poller_fd ()
 {
     void *null_poller = NULL;
-    zmq_fd_t fd;
+    fd_t fd;
     TEST_ASSERT_FAILURE_ERRNO (EFAULT, zmq_poller_fd (&null_poller, &fd));
 }
 
@@ -285,7 +285,7 @@ void test_call_poller_fd_no_signaler ()
     TEST_ASSERT_SUCCESS_ERRNO (
       zmq_poller_add (poller, socket, NULL, ZMQ_POLLIN));
 
-    zmq_fd_t fd;
+    fd_t fd;
     TEST_ASSERT_FAILURE_ERRNO (EINVAL, zmq_poller_fd (poller, &fd));
 
     TEST_ASSERT_SUCCESS_ERRNO (zmq_poller_destroy (&poller));
@@ -303,7 +303,7 @@ void test_call_poller_fd ()
     TEST_ASSERT_SUCCESS_ERRNO (
       zmq_poller_add (poller, socket, NULL, ZMQ_POLLIN));
 
-    zmq_fd_t fd;
+    fd_t fd;
     TEST_ASSERT_SUCCESS_ERRNO (zmq_poller_fd (poller, &fd));
 
     TEST_ASSERT_SUCCESS_ERRNO (zmq_poller_destroy (&poller));

tests/test_system.cpp

@@ -85,7 +85,7 @@ void test_max_sockets ()
     int count;
     for (count = 0; count < MAX_SOCKETS; count++) {
         handle[count] = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
-        if (handle[count] == -1) {
+        if (handle[count] == retired_fd) {
             printf ("W: Only able to create %d sockets on this box\n", count);
             const char msg[] =
               "I: Tune your system to increase maximum allowed file handles\n"

tests/testutil.hpp

@@ -74,26 +74,32 @@ inline const char *as_setsockopt_opt_t (const void *opt)
 {
     return static_cast<const char *> (opt);
 }
+#else
+typedef size_t socket_size_t;
+inline const void *as_setsockopt_opt_t (const void *opt_)
+{
+    return opt_;
+}
+#endif
+
+// duplicated from fd.hpp
+typedef zmq_fd_t fd_t;
+#ifdef ZMQ_HAVE_WINDOWS
 #if defined _MSC_VER && _MSC_VER <= 1400
-typedef UINT_PTR fd_t;
 enum
 {
-    retired_fd = (fd_t) (~0)
+    retired_fd = (zmq_fd_t) (~0)
 };
 #else
-typedef SOCKET fd_t;
 enum
+#if _MSC_VER >= 1800
+  : zmq_fd_t
+#endif
 {
-    retired_fd = (fd_t) INVALID_SOCKET
+    retired_fd = INVALID_SOCKET
 };
 #endif
 #else
-typedef size_t socket_size_t;
-inline const void *as_setsockopt_opt_t (const void *opt_)
-{
-    return opt_;
-}
-typedef int fd_t;
 enum
 {
     retired_fd = -1