enhance sys_select tests

[Bruno Haible]

The FD_* macros/functions are defined by the <sys/select.h> header file,
not by the select() function. Therefore I'm moving their unit tests:


2011-07-22  Bruno Haible  <address@hidden>

        sys_select tests: Check the signature of FD_*.
        * tests/test-select.c (FD_CLR, FD_ISSET, FD_SET, FD_ZERO): Move
        signature tests from here...
        * tests/test-sys_select.c (FD_CLR, FD_ISSET, FD_SET, FD_ZERO): ... to
        here.
        * modules/sys_select-tests (Files): Add tests/signature.h.

--- modules/sys_select-tests.orig       Sat Jul 23 03:20:17 2011
+++ modules/sys_select-tests    Sat Jul 23 03:18:10 2011
@@ -1,5 +1,6 @@
 Files:
 tests/test-sys_select.c
+tests/signature.h
 
 Depends-on:
 sys_select-c++-tests
--- tests/test-select.c.orig    Sat Jul 23 03:20:17 2011
+++ tests/test-select.c Sat Jul 23 03:19:48 2011
@@ -31,21 +31,6 @@
                                struct timeval *));
 #endif
 
-/* The following may be macros without underlying functions, so only
-   check signature if they are not macros.  */
-#ifndef FD_CLR
-SIGNATURE_CHECK (FD_CLR, void, (int, fd_set *));
-#endif
-#ifndef FD_ISSET
-SIGNATURE_CHECK (FD_ISSET, void, (int, fd_set *));
-#endif
-#ifndef FD_SET
-SIGNATURE_CHECK (FD_SET, int, (int, fd_set *));
-#endif
-#ifndef FD_ZERO
-SIGNATURE_CHECK (FD_ZERO, void, (fd_set *));
-#endif
-
 #include <stdio.h>
 #include <string.h>
 #include <netinet/in.h>
--- tests/test-sys_select.c.orig        Sat Jul 23 03:20:17 2011
+++ tests/test-sys_select.c     Sat Jul 23 03:17:45 2011
@@ -20,6 +20,23 @@
 
 #include <sys/select.h>
 
+#include "signature.h"
+
+/* The following may be macros without underlying functions, so only
+   check signature if they are not macros.  */
+#ifndef FD_CLR
+SIGNATURE_CHECK (FD_CLR, void, (int, fd_set *));
+#endif
+#ifndef FD_ISSET
+SIGNATURE_CHECK (FD_ISSET, void, (int, fd_set *));
+#endif
+#ifndef FD_SET
+SIGNATURE_CHECK (FD_SET, int, (int, fd_set *));
+#endif
+#ifndef FD_ZERO
+SIGNATURE_CHECK (FD_ZERO, void, (fd_set *));
+#endif
+
 /* Check that the 'struct timeval' type is defined.  */
 struct timeval t1;
 
-- 
In memoriam Dmitry Pavlov <http://en.wikipedia.org/wiki/Dmitry_Pavlov_(general)>