PATCH: Add tst-mallocalign1

["H.J. Lu" <hongjiu dot lu at intel dot com>]

Hi,

This patch adds tst-mallocalign1 to test malloc alignment.  Tested on
Linux/x86-64.  OK to install?

Thanks.


H.J.
---
	* sysdeps/x86_64/Makefile (tests): Add tst-mallocalign1.
	* sysdeps/x86_64/tst-mallocalign1.c: New file.

diff --git a/sysdeps/x86_64/Makefile b/sysdeps/x86_64/Makefile
index 81c9128..d4525bc 100644
--- a/sysdeps/x86_64/Makefile
+++ b/sysdeps/x86_64/Makefile
@@ -11,6 +11,10 @@ ifeq ($(subdir),gmon)
 sysdep_routines += _mcount
 endif
 
+ifeq ($(subdir),malloc)
+tests += tst-mallocalign1
+endif
+
 ifeq ($(subdir),string)
 sysdep_routines += cacheinfo strcasecmp_l-nonascii strncase_l-nonascii
 gen-as-const-headers += locale-defines.sym
diff --git a/sysdeps/x86_64/tst-mallocalign1.c b/sysdeps/x86_64/tst-mallocalign1.c
new file mode 100644
index 0000000..6b2a386
--- /dev/null
+++ b/sysdeps/x86_64/tst-mallocalign1.c
@@ -0,0 +1,69 @@
+/* Copyright (C) 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+/* Specified by x86-64 psABI.  */
+#define ALIGN_MASK (16 - 1)
+
+void *
+test (size_t s)
+{
+  void *p = malloc (s);
+
+  printf ("malloc: %d, %p: %ld\n", s, p,
+	  ((unsigned long) p) & ALIGN_MASK);
+  return p;
+}
+
+int
+main (void)
+{
+  void *p;
+  int ret = 0;
+  
+  p = test (2);
+  ret |= (unsigned long) p & ALIGN_MASK;
+  free (p);
+
+  p = test (8);
+  ret |= (unsigned long) p & ALIGN_MASK;
+  free (p);
+
+  p = test (13);
+  ret |= (unsigned long) p & ALIGN_MASK;
+  free (p);
+
+  p = test (16);
+  ret |= (unsigned long) p & ALIGN_MASK;
+  free (p);
+
+  p = test (23);
+  ret |= (unsigned long) p & ALIGN_MASK;
+  free (p);
+
+  p = test (43);
+  ret |= (unsigned long) p & ALIGN_MASK;
+  free (p);
+
+  p = test (123);
+  ret |= (unsigned long) p & ALIGN_MASK;
+  free (p);
+
+  return ret;
+}