>From fd8403522f26c5dca64fcc29bcf4c6b4c5b08335 Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Tue, 21 Jul 2020 10:04:36 +0200
Subject: [PATCH 2/2] aligned-malloc: Add tests.

* tests/test-aligned-malloc.c: New file.
* modules/aligned-malloc-tests: New file.
---
 ChangeLog                    |   4 ++
 modules/aligned-malloc-tests |  11 +++++
 tests/test-aligned-malloc.c  | 102 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 117 insertions(+)
 create mode 100644 modules/aligned-malloc-tests
 create mode 100644 tests/test-aligned-malloc.c

diff --git a/ChangeLog b/ChangeLog
index 768b209..8da483c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2020-07-21  Bruno Haible  <bruno@clisp.org>
 
+	aligned-malloc: Add tests.
+	* tests/test-aligned-malloc.c: New file.
+	* modules/aligned-malloc-tests: New file.
+
 	aligned-malloc: New module.
 	* lib/aligned-malloc.h: New file.
 	* m4/malloc-align.m4: New file.
diff --git a/modules/aligned-malloc-tests b/modules/aligned-malloc-tests
new file mode 100644
index 0000000..4d60549
--- /dev/null
+++ b/modules/aligned-malloc-tests
@@ -0,0 +1,11 @@
+Files:
+tests/test-aligned-malloc.c
+tests/macros.h
+
+Depends-on:
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-aligned-malloc
+check_PROGRAMS += test-aligned-malloc
diff --git a/tests/test-aligned-malloc.c b/tests/test-aligned-malloc.c
new file mode 100644
index 0000000..6368746
--- /dev/null
+++ b/tests/test-aligned-malloc.c
@@ -0,0 +1,102 @@
+/* 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>
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#define ALIGNMENT 4
+#define aligned_malloc aligned4_malloc
+#define aligned_free aligned4_free
+#include "aligned-malloc.h"
+#undef aligned_free
+#undef aligned_malloc
+#undef ALIGNMENT
+
+#define ALIGNMENT 8
+#define aligned_malloc aligned8_malloc
+#define aligned_free aligned8_free
+#include "aligned-malloc.h"
+#undef aligned_free
+#undef aligned_malloc
+#undef ALIGNMENT
+
+#define ALIGNMENT 16
+#define aligned_malloc aligned16_malloc
+#define aligned_free aligned16_free
+#include "aligned-malloc.h"
+#undef aligned_free
+#undef aligned_malloc
+#undef ALIGNMENT
+
+#define ALIGNMENT 32
+#define aligned_malloc aligned32_malloc
+#define aligned_free aligned32_free
+#include "aligned-malloc.h"
+#undef aligned_free
+#undef aligned_malloc
+#undef ALIGNMENT
+
+#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 };
+  void *aligned4_blocks[SIZEOF (sizes)];
+  void *aligned8_blocks[SIZEOF (sizes)];
+  void *aligned16_blocks[SIZEOF (sizes)];
+  void *aligned32_blocks[SIZEOF (sizes)];
+  size_t i;
+
+  for (i = 0; i < SIZEOF (sizes); i++)
+    {
+      size_t size = sizes[i];
+
+      aligned4_blocks[i] = aligned4_malloc (size);
+      ASSERT (((uintptr_t) aligned4_blocks[i] % 4) == 0);
+      memset (aligned4_blocks[i], 'w', size);
+
+      aligned8_blocks[i] = aligned8_malloc (size);
+      ASSERT (((uintptr_t) aligned8_blocks[i] % 8) == 0);
+      memset (aligned8_blocks[i], 'x', size);
+
+      aligned16_blocks[i] = aligned16_malloc (size);
+      ASSERT (((uintptr_t) aligned16_blocks[i] % 16) == 0);
+      memset (aligned16_blocks[i], 'y', size);
+
+      aligned32_blocks[i] = aligned32_malloc (size);
+      ASSERT (((uintptr_t) aligned32_blocks[i] % 32) == 0);
+      memset (aligned32_blocks[i], 'z', size);
+    }
+
+  for (i = 0; i < SIZEOF (sizes); i++)
+    {
+      aligned4_free (aligned4_blocks[i]);
+      aligned8_free (aligned8_blocks[i]);
+      aligned16_free (aligned16_blocks[i]);
+      aligned32_free (aligned32_blocks[i]);
+    }
+
+  return 0;
+}
-- 
2.7.4