--- /dev/null
+/* Test of allocating memory with given alignment.
+
+ Copyright (C) 2020 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/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2020. */
+
+#include <config.h>
+
+#if HAVE_MEMALIGN
+
+/* Specification. */
+# include <malloc.h>
+
+# include <stdint.h>
+# include <stdlib.h>
+# include <string.h>
+
+# include "macros.h"
+
+int
+main (int argc, char *argv[])
+{
+ static size_t sizes[] =
+ { 13, 8, 17, 450, 320, 1, 99, 4, 15, 16, 2, 76, 37, 127, 2406, 641, 5781 };
+ void *aligned2_blocks[SIZEOF (sizes)];
+ void *aligned4_blocks[SIZEOF (sizes)];
+ void *aligned8_blocks[SIZEOF (sizes)];
+ void *aligned16_blocks[SIZEOF (sizes)];
+ void *aligned32_blocks[SIZEOF (sizes)];
+ void *aligned64_blocks[SIZEOF (sizes)];
+ size_t i;
+
+ for (i = 0; i < SIZEOF (sizes); i++)
+ {
+ size_t size = sizes[i];
+
+ aligned2_blocks[i] = memalign (2, size);
+ ASSERT (aligned2_blocks[i] != NULL);
+ ASSERT (((uintptr_t) aligned2_blocks[i] % 2) == 0);
+ memset (aligned2_blocks[i], 'u', size);
+
+ aligned4_blocks[i] = memalign (4, size);
+ ASSERT (aligned4_blocks[i] != NULL);
+ ASSERT (((uintptr_t) aligned4_blocks[i] % 4) == 0);
+ memset (aligned4_blocks[i], 'v', size);
+
+ aligned8_blocks[i] = memalign (8, size);
+ ASSERT (aligned8_blocks[i] != NULL);
+ ASSERT (((uintptr_t) aligned8_blocks[i] % 8) == 0);
+ memset (aligned8_blocks[i], 'w', size);
+
+ aligned16_blocks[i] = memalign (16, size);
+ ASSERT (aligned16_blocks[i] != NULL);
+ ASSERT (((uintptr_t) aligned16_blocks[i] % 16) == 0);
+ memset (aligned16_blocks[i], 'x', size);
+
+ aligned32_blocks[i] = memalign (32, size);
+ ASSERT (aligned32_blocks[i] != NULL);
+ ASSERT (((uintptr_t) aligned32_blocks[i] % 32) == 0);
+ memset (aligned32_blocks[i], 'y', size);
+
+ aligned64_blocks[i] = memalign (64, size);
+ ASSERT (aligned64_blocks[i] != NULL);
+ ASSERT (((uintptr_t) aligned64_blocks[i] % 64) == 0);
+ memset (aligned64_blocks[i], 'z', size);
+ }
+
+ for (i = 0; i < SIZEOF (sizes); i++)
+ {
+ free (aligned2_blocks[i]);
+ free (aligned4_blocks[i]);
+ free (aligned8_blocks[i]);
+ free (aligned16_blocks[i]);
+ free (aligned32_blocks[i]);
+ free (aligned64_blocks[i]);
+ }
+
+ return 0;
+}
+
+#else
+
+# include <stdio.h>
+
+int
+main (int argc, char *argv[])
+{
+ fputs ("Skipping test: function 'memalign' does not exist\n", stderr);
+ return 77;
+}
+
+#endif