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authorJörg Frings-Fürst <debian@jff.email>2024-03-03 19:11:58 +0100
committerJörg Frings-Fürst <debian@jff.email>2024-03-03 19:11:58 +0100
commit9853b168f68cbb09b75a817343cedde2aca4c76c (patch)
treedb628840acea83dbccaf5676b89579a80e02ef51 /tests/test-random_r.c
parentd83e85a2e6064c36f6ad3c848e39d8b8c101c4f7 (diff)
parent7cf710f6587e71a193a55d84dd6d8ae1a8a69ce0 (diff)
Merge branch 'feature/upstream' into develop
Diffstat (limited to 'tests/test-random_r.c')
-rw-r--r--tests/test-random_r.c68
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;
+}