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author | Jörg Frings-Fürst <debian@jff.email> | 2024-03-03 19:11:45 +0100 |
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committer | Jörg Frings-Fürst <debian@jff.email> | 2024-03-03 19:11:45 +0100 |
commit | 7cf710f6587e71a193a55d84dd6d8ae1a8a69ce0 (patch) | |
tree | db628840acea83dbccaf5676b89579a80e02ef51 /tests/test-random_r.c | |
parent | d83e85a2e6064c36f6ad3c848e39d8b8c101c4f7 (diff) | |
parent | 00893e79fc62966067af1a106567db96bd170338 (diff) |
Update upstream source from tag 'upstream/1.2'
Update to upstream version '1.2'
with Debian dir 16dafe941db3036235f48227f29c6a73587c376d
Diffstat (limited to 'tests/test-random_r.c')
-rw-r--r-- | tests/test-random_r.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/tests/test-random_r.c b/tests/test-random_r.c new file mode 100644 index 00000000..19f570d7 --- /dev/null +++ b/tests/test-random_r.c @@ -0,0 +1,68 @@ +/* Test random_r. + Copyright (C) 2008-2024 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 + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. */ + +#include <config.h> + +#include <stdlib.h> + +#include "signature.h" +SIGNATURE_CHECK (srandom_r, int, (unsigned int, struct random_data *)); +SIGNATURE_CHECK (initstate_r, int, (unsigned int, char *, size_t, + struct random_data *)); +SIGNATURE_CHECK (setstate_r, int, (char *, struct random_data *)); +SIGNATURE_CHECK (random_r, int, (struct random_data *, int32_t *)); + +#include <time.h> + +#include "macros.h" + +/* Note: This test crashes on glibc/SPARC systems. + Reported at <https://sourceware.org/bugzilla/show_bug.cgi?id=30584>. */ + +static int +test_failed (int alignment) +{ + struct random_data rand_state; + char buf[128 + sizeof (int32_t)]; + unsigned int i; + unsigned int n_big = 0; + + rand_state.state = NULL; + if (initstate_r (time (NULL), buf + alignment, sizeof buf - alignment, + &rand_state)) + return 1; + for (i = 0; i < 1000; i++) + { + int32_t r; + ASSERT (random_r (&rand_state, &r) == 0); + ASSERT (0 <= r); + if (RAND_MAX / 2 < r) + ++n_big; + } + + /* Fail if none of the numbers were larger than RAND_MAX / 2. */ + return !n_big; +} + +int +main () +{ + int alignment; + for (alignment = 0; alignment < sizeof (int32_t); alignment++) + if (test_failed (alignment)) + return 1; + return 0; +} |