[BZ #710]

2005-02-09  Jakub Jelinek  <jakub@redhat.com>
	[BZ #710]
	* stdlib/random_r.c (__initstate_r): Save old state.
	* stdlib/Makefile (tests): Add tst-random2.
	* stdlib/tst-random2.c: New test.
	Reported by Peter Bergner <bergner@vnet.ibm.com>.

	(s390-.*-.*, powerpc.*-.*-.*, sparc.*-.*-.*): Add WORDSIZE64 entries
	for these mapping back to the above.

1 files changed, 59 insertions, 0 deletions

diff --git a/stdlib/tst-random2.c b/stdlib/tst-random2.c
new file mode 100644
index 0000000..aa1b89d
--- /dev/null
+++ b/stdlib/tst-random2.c
@@ -0,0 +1,59 @@
+/* Test initstate saving the old state.
+   Copyright (C) 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2005.
+
+   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 <stdio.h>
+#include <stdlib.h>
+
+int
+main (void)
+{
+  int pass;
+  int ret = 0;
+  long int r[2];
+
+  for (pass = 0; pass < 2; pass++)
+    {
+      srandom (0x12344321);
+
+      int j;
+      for (j = 0; j < 3; ++j)
+	random ();
+      if (pass == 1)
+	{
+	  char state[128];
+	  char *ostate = initstate (0x34562101, state, 128);
+	  if (setstate (ostate) != state)
+	    {
+	      puts ("setstate (ostate) != state");
+	      ret = 1;
+	    }
+	}
+
+      random ();
+      r[pass] = random ();
+    }
+
+  if (r[0] != r[1])
+    {
+      printf ("%ld != %ld\n", r[0], r[1]);
+      ret = 1;
+    }
+  return ret;
+}