1 files changed, 82 insertions, 0 deletions
diff --git a/malloc/tst-mallocstate.c b/malloc/tst-mallocstate.c
new file mode 100644
index 0000000000..97a10586d3
--- /dev/null
+++ b/malloc/tst-mallocstate.c
@@ -0,0 +1,82 @@
+/* Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Wolfram Gloger <wg@malloc.de>, 2001.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <stdio.h>
+#include "malloc.h"
+
+static int errors = 0;
+
+static void
+merror (const char *msg)
+{
+  ++errors;
+  printf ("Error: %s\n", msg);
+}
+
+int
+main (void)
+{
+  void *p1, *p2;
+  void *save_state;
+  long i;
+
+  errno = 0;
+
+  p1 = malloc (10);
+  if (p1 == NULL)
+    merror ("malloc (10) failed.");
+
+  p2 = malloc (20);
+  if (p2 == NULL)
+    merror ("malloc (20) failed.");
+
+  free (malloc (10));
+
+  for (i=0; i<100; ++i)
+    {
+      save_state = malloc_get_state ();
+      if (save_state == NULL)
+	{
+	  merror ("malloc_get_state () failed.");
+	  break;
+	}
+      /*free (malloc (10)); This could change the top chunk! */
+      malloc_set_state (save_state);
+      p1 = realloc (p1, i*4 + 4);
+      if (p1 == NULL)
+	merror ("realloc (i*4) failed.");
+      free (save_state);
+    }
+
+  p1 = realloc (p1, 40);
+  free (p2);
+  p2 = malloc (10);
+  if (p2 == NULL)
+    merror ("malloc (10) failed.");
+  free (p1);
+
+  return errors != 0;
+}
+
+/*
+ * Local variables:
+ * c-basic-offset: 2
+ * End:
+ */