gettimeofday: port recent C++ fix to Emacs

[gnulib.git] / tests / test-snprintf.c

diff --git a/tests/test-snprintf.c b/tests/test-snprintf.c
index 7b3e9b4..108346e 100644 (file)
--- a/tests/test-snprintf.c
+++ b/tests/test-snprintf.c
@@ -1,10 +1,10 @@
 /* Test of snprintf() function.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2013 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -12,21 +12,20 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
 
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
 
 #include <stdio.h>
 
-#include <stdlib.h>
+#include "signature.h"
+SIGNATURE_CHECK (snprintf, int, (char *, size_t, char const *, ...));
+
 #include <string.h>
 
-#define ASSERT(expr) if (!(expr)) abort ();
+#include "macros.h"
 
 int
 main (int argc, char *argv[])
@@ -35,26 +34,39 @@ main (int argc, char *argv[])
   int size;
   int retval;
 
+  retval = snprintf (NULL, 0, "%d", 12345);
+  ASSERT (retval == 5);
+
   for (size = 0; size <= 8; size++)
     {
       memcpy (buf, "DEADBEEF", 8);
       retval = snprintf (buf, size, "%d", 12345);
+      ASSERT (retval == 5);
       if (size < 6)
-       {
-         ASSERT (retval < 0 || retval >= size);
-         if (size > 0)
-           {
-             ASSERT (memcmp (buf, "12345", size - 1) == 0);
-             ASSERT (buf[size - 1] == '\0' || buf[size - 1] == '0' + size);
-           }
-         ASSERT (memcmp (buf + size, "DEADBEEF" + size, 8 - size) == 0);
-       }
+        {
+          if (size > 0)
+            {
+              ASSERT (memcmp (buf, "12345", size - 1) == 0);
+              ASSERT (buf[size - 1] == '\0' || buf[size - 1] == '0' + size);
+            }
+#if !CHECK_SNPRINTF_POSIX
+          if (size > 0)
+#endif
+            ASSERT (memcmp (buf + size, &"DEADBEEF"[size], 8 - size) == 0);
+        }
       else
-       {
-         ASSERT (retval == 5);
-         ASSERT (memcmp (buf, "12345\0EF", 8) == 0);
-       }
+        {
+          ASSERT (memcmp (buf, "12345\0EF", 8) == 0);
+        }
     }
 
+  /* Test the support of the POSIX/XSI format strings with positions.  */
+  {
+    char result[100];
+    retval = snprintf (result, sizeof (result), "%2$d %1$d", 33, 55);
+    ASSERT (strcmp (result, "55 33") == 0);
+    ASSERT (retval == strlen (result));
+  }
+
   return 0;
 }