openat: detect Solaris fchownat bug

[gnulib.git] / tests / test-snprintf-posix.h

diff --git a/tests/test-snprintf-posix.h b/tests/test-snprintf-posix.h
index 09b1867..262cdda 100644 (file)
--- a/tests/test-snprintf-posix.h
+++ b/tests/test-snprintf-posix.h
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vsnprintf() and snprintf() functions.
-   Copyright (C) 2007-2008 Free Software Foundation, Inc.
+   Copyright (C) 2007-2009 Free Software Foundation, Inc.
 
    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
@@ -33,10 +33,16 @@ double zerod = 0.0;
 
 /* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
    So we use minus_zerol instead.
+   IRIX cc can't put -0.0L into .data, but can compute at runtime.
    Note that the expression -LDBL_MIN * LDBL_MIN does not work on other
    platforms, such as when cross-compiling to PowerPC on MacOS X 10.5.  */
 #if defined __hpux || defined __sgi
-long double minus_zerol = -LDBL_MIN * LDBL_MIN;
+static long double
+compute_minus_zerol (void)
+{
+  return -LDBL_MIN * LDBL_MIN;
+}
+# define minus_zerol compute_minus_zerol ()
 #else
 long double minus_zerol = -0.0L;
 #endif
@@ -3058,4 +3064,50 @@ test_function (int (*my_snprintf) (char *, size_t, const char *, ...))
     ASSERT (strcmp (result + 4000, " 99") == 0);
     ASSERT (retval == strlen (result));
   }
+
+  /* Test the support of the %s format directive.  */
+
+  /* To verify that these tests succeed, it is necessary to run them under
+     a tool that checks against invalid memory accesses, such as ElectricFence
+     or "valgrind --tool=memcheck".  */
+  {
+    size_t i;
+
+    for (i = 1; i <= 8; i++)
+      {
+       char *block;
+       char result[5000];
+       int retval;
+
+       block = (char *) malloc (i);
+       memcpy (block, "abcdefgh", i);
+       retval = my_snprintf (result, sizeof (result), "%.*s", (int) i, block);
+       ASSERT (memcmp (result, block, i) == 0);
+       ASSERT (result[i] == '\0');
+       ASSERT (retval == strlen (result));
+       free (block);
+      }
+  }
+#if HAVE_WCHAR_T
+  {
+    size_t i;
+
+    for (i = 1; i <= 8; i++)
+      {
+       wchar_t *block;
+       size_t j;
+       char result[5000];
+       int retval;
+
+       block = (wchar_t *) malloc (i * sizeof (wchar_t));
+       for (j = 0; j < i; j++)
+         block[j] = "abcdefgh"[j];
+       retval = my_snprintf (result, sizeof (result), "%.*ls", (int) i, block);
+       ASSERT (memcmp (result, "abcdefgh", i) == 0);
+       ASSERT (result[i] == '\0');
+       ASSERT (retval == strlen (result));
+       free (block);
+      }
+  }
+#endif
 }