malloc: Add posix_memalign test.

ChangeLog:

2013-10-02  Will Newton  <will.newton@linaro.org>

	* malloc/Makefile: Add tst-posix_memalign.
	* malloc/tst-posix_memalign.c: New file.

ChangeLog

@@ -1,3 +1,8 @@
+2013-10-02  Will Newton  <will.newton@linaro.org>
+
+	* malloc/Makefile: Add tst-posix_memalign.
+	* malloc/tst-posix_memalign.c: New file.
+
 2013-09-30  Petr Machata  <pmachata@redhat.com>
 
 	* elf/elf.h (R_AARCH64_ABS16): New macro.

malloc/Makefile

@@ -26,7 +26,7 @@ dist-headers := malloc.h
 headers := $(dist-headers) obstack.h mcheck.h
 tests := mallocbug tst-malloc tst-valloc tst-calloc tst-obstack \
 	 tst-mallocstate tst-mcheck tst-mallocfork tst-trim1 \
-	 tst-malloc-usable tst-realloc
+	 tst-malloc-usable tst-realloc tst-posix_memalign
 test-srcs = tst-mtrace
 
 routines = malloc morecore mcheck mtrace obstack

malloc/tst-posix_memalign.c

@@ -0,0 +1,98 @@
+/* Copyright (C) 2013 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 <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+static int errors = 0;
+
+static void
+merror (const char *msg)
+{
+  ++errors;
+  printf ("Error: %s\n", msg);
+}
+
+static int
+do_test (void)
+{
+  void *p;
+  int ret;
+  unsigned long pagesize = getpagesize();
+  unsigned long ptrval;
+
+  p = NULL;
+
+  ret = posix_memalign (&p, sizeof (void *), -1);
+
+  if (ret != ENOMEM)
+    merror ("posix_memalign (&p, sizeof (void *), -1) succeeded.");
+
+  if (ret == ENOMEM && p != NULL)
+    merror ("returned an error but pointer was modified");
+
+  p = NULL;
+
+  ret = posix_memalign (&p, pagesize, -pagesize);
+
+  if (ret != ENOMEM)
+    merror ("posix_memalign (&p, pagesize, -pagesize) succeeded.");
+
+  p = NULL;
+
+  ret = posix_memalign (&p, sizeof (void *), 0);
+
+  if (ret != 0 || p == NULL)
+    merror ("posix_memalign (&p, sizeof (void *), 0) failed.");
+
+  free (p);
+
+  ret = posix_memalign (&p, 0x300, 10);
+
+  if (ret != EINVAL)
+    merror ("posix_memalign (&p, 0x300, 10) succeeded.");
+
+  ret = posix_memalign (&p, 0, 10);
+
+  if (ret != EINVAL)
+    merror ("posix_memalign (&p, 0, 10) succeeded.");
+
+  p = NULL;
+
+  ret = posix_memalign (&p, 0x100, 10);
+
+  if (ret != 0)
+    merror ("posix_memalign (&p, 0x100, 10) failed.");
+
+  if (ret == 0 && p == NULL)
+    merror ("returned success but pointer is NULL");
+
+  ptrval = (unsigned long)p;
+
+  if (ret == 0 && (ptrval & 0xff))
+    merror ("pointer is not aligned to 0x100");
+
+  free (p);
+
+  return errors != 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"