summaryrefslogtreecommitdiffstats
path: root/gnulib-tests/test-alignof.c
diff options
context:
space:
mode:
Diffstat (limited to 'gnulib-tests/test-alignof.c')
-rw-r--r--gnulib-tests/test-alignof.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/gnulib-tests/test-alignof.c b/gnulib-tests/test-alignof.c
new file mode 100644
index 0000000..6cd8a56
--- /dev/null
+++ b/gnulib-tests/test-alignof.c
@@ -0,0 +1,59 @@
+/* Test of <alignof.h>.
+ Copyright (C) 2009-2018 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>, 2009. */
+
+#include <config.h>
+
+#include <alignof.h>
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "verify.h"
+
+typedef long double longdouble;
+typedef struct { char a[1]; } struct1;
+typedef struct { char a[2]; } struct2;
+typedef struct { char a[3]; } struct3;
+typedef struct { char a[4]; } struct4;
+
+#define CHECK(type) \
+ typedef struct { char slot1; type slot2; } type##_helper; \
+ verify (alignof_slot (type) == offsetof (type##_helper, slot2)); \
+ const int type##_slot_alignment = alignof_slot (type); \
+ const int type##_type_alignment = alignof_type (type);
+
+CHECK (char)
+CHECK (short)
+CHECK (int)
+CHECK (long)
+CHECK (float)
+CHECK (double)
+CHECK (longdouble)
+#ifdef INT64_MAX
+CHECK (int64_t)
+#endif
+CHECK (struct1)
+CHECK (struct2)
+CHECK (struct3)
+CHECK (struct4)
+
+int
+main ()
+{
+ return 0;
+}