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authorJörg Frings-Fürst <debian@jff.email>2022-01-08 11:51:07 +0100
committerJörg Frings-Fürst <debian@jff.email>2022-01-08 11:51:07 +0100
commitbe8efac78d067c138ad8dda03df4336e73f94887 (patch)
tree5f5254a628ba0ef72065b93d949d1c985742ea8e /tests/test-realloc-gnu.c
parent7b65dbd4ebade81d504cfe5e681292a58ad1fdf0 (diff)
New upstream version 1.0upstream/1.0
Diffstat (limited to 'tests/test-realloc-gnu.c')
-rw-r--r--tests/test-realloc-gnu.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/tests/test-realloc-gnu.c b/tests/test-realloc-gnu.c
new file mode 100644
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+++ b/tests/test-realloc-gnu.c
@@ -0,0 +1,49 @@
+/* Test of realloc function.
+ Copyright (C) 2010-2022 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>
+
+/* Specification. */
+#include <stdlib.h>
+
+#include <errno.h>
+#include <stdint.h>
+
+#include "macros.h"
+
+int
+main (int argc, char **argv)
+{
+ /* Check that realloc (NULL, 0) is not a NULL pointer. */
+ void *volatile p = realloc (NULL, 0);
+ ASSERT (p != NULL);
+
+ /* Check that realloc (p, n) fails when p is non-null and n exceeds
+ PTRDIFF_MAX. */
+ if (PTRDIFF_MAX < SIZE_MAX)
+ {
+ size_t one = argc != 12345;
+ p = realloc (p, PTRDIFF_MAX + one);
+ ASSERT (p == NULL);
+ /* Avoid a test failure due to glibc bug
+ <https://sourceware.org/bugzilla/show_bug.cgi?id=27870>. */
+ if (!getenv ("MALLOC_CHECK_"))
+ ASSERT (errno == ENOMEM);
+ }
+
+ free (p);
+ return 0;
+}