1 files changed, 110 insertions, 0 deletions
diff --git a/malloc/tst-calloc.c b/malloc/tst-calloc.c
new file mode 100644
index 0000000000..371cfeb11a
--- /dev/null
+++ b/malloc/tst-calloc.c
@@ -0,0 +1,110 @@
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <error.h>
+#include <malloc.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+
+/* Number of samples per size.  */
+#define N 50000
+
+
+static void
+fixed_test (int size)
+{
+  char *ptrs[N];
+  int i;
+
+  for (i = 0; i < N; ++i)
+    {
+      int j;
+
+      ptrs[i] = (char *) calloc (1, size);
+
+      if (ptrs[i] == NULL)
+	break;
+
+      for (j = 0; j < size; ++j)
+	{
+	  if (ptrs[i][j] != '\0')
+	    error (EXIT_FAILURE, 0,
+		   "byte not cleared (size %d, element %d, byte %d)",
+		   size, i, j);
+	  ptrs[i][j] = '\xff';
+	}
+    }
+
+  while (i-- > 0)
+    free (ptrs[i]);
+}
+
+
+static void
+random_test (void)
+{
+  char *ptrs[N];
+  int i;
+
+  for (i = 0; i < N; ++i)
+    {
+      int j;
+      int n = 1 + random () % 10;
+      int elem = 1 + random () % 100;
+      int size = n * elem;
+
+      ptrs[i] = (char *) calloc (n, elem);
+
+      if (ptrs[i] == NULL)
+	break;
+
+      for (j = 0; j < size; ++j)
+	{
+	  if (ptrs[i][j] != '\0')
+	    error (EXIT_FAILURE, 0,
+		   "byte not cleared (size %d, element %d, byte %d)",
+		   size, i, j);
+	  ptrs[i][j] = '\xff';
+	}
+    }
+
+  while (i-- > 0)
+    free (ptrs[i]);
+}
+
+
+int
+main (void)
+{
+  /* We are allocating blocks with `calloc' and check whether every
+     block is completely cleared.  We first try this for some fixed
+     times and then with random size.  */
+  fixed_test (15);
+  fixed_test (5);
+  fixed_test (17);
+  fixed_test (6);
+  fixed_test (31);
+  fixed_test (96);
+
+  random_test ();
+
+  return 0;
+}