1 files changed, 57 insertions, 0 deletions
diff --git a/tests/test-alignalloc.c b/tests/test-alignalloc.c
new file mode 100644
index 0000000000..161ab384db
--- /dev/null
+++ b/tests/test-alignalloc.c
@@ -0,0 +1,57 @@
+/* Test alignalloc and alignfree.
+
+   Copyright 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>
+
+#include <alignalloc.h>
+
+#include <stdint.h>
+#include <string.h>
+#include "intprops.h"
+
+#include "signature.h"
+SIGNATURE_CHECK (alignalloc, void *, (idx_t, idx_t));
+SIGNATURE_CHECK (alignfree, void, (void *));
+
+#include "macros.h"
+
+int
+main ()
+{
+  /* Check that alignalloc returns properly aligned storage,
+     when it succeeds.  */
+  for (idx_t alignment = 1; ; )
+    {
+      for (idx_t size = 0; size <= 1024; size = size ? 2 * size : 1)
+        {
+          void *p = alignalloc (alignment, size);
+          if (p)
+            {
+              memset (p, 0, size);
+              ASSERT ((uintptr_t) p % alignment == 0);
+            }
+          alignfree (p);
+        }
+      if (INT_MULTIPLY_WRAPV (alignment, 2, &alignment))
+        break;
+    }
+
+  /* Check that alignfree is a no-op on null pointers.  */
+  alignfree (NULL);
+
+  return 0;
+}