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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>.
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Feb 16, 2005
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/* 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. */ | ||
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#include <stdio.h> | ||
#include <stdlib.h> | ||
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int | ||
main (void) | ||
{ | ||
int pass; | ||
int ret = 0; | ||
long int r[2]; | ||
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for (pass = 0; pass < 2; pass++) | ||
{ | ||
srandom (0x12344321); | ||
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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; | ||
} | ||
} | ||
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random (); | ||
r[pass] = random (); | ||
} | ||
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if (r[0] != r[1]) | ||
{ | ||
printf ("%ld != %ld\n", r[0], r[1]); | ||
ret = 1; | ||
} | ||
return ret; | ||
} |