malloc/tst-posix_memalign.c

   1 /* Copyright (C) 2013 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <stdlib.h>
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <unistd.h>
  23
  24 static int errors = 0;
  25
  26 static void
  27 merror (const char *msg)
  28 {
  29   ++errors;
  30   printf ("Error: %s\n", msg);
  31 }
  32
  33 static int
  34 do_test (void)
  35 {
  36   void *p;
  37   int ret;
  38   unsigned long pagesize = getpagesize();
  39   unsigned long ptrval;
  40
  41   p = NULL;
  42
  43   ret = posix_memalign (&p, sizeof (void *), -1);
  44
  45   if (ret != ENOMEM)
  46     merror ("posix_memalign (&p, sizeof (void *), -1) succeeded.");
  47
  48   if (ret == ENOMEM && p != NULL)
  49     merror ("returned an error but pointer was modified");
  50
  51   p = NULL;
  52
  53   ret = posix_memalign (&p, pagesize, -pagesize);
  54
  55   if (ret != ENOMEM)
  56     merror ("posix_memalign (&p, pagesize, -pagesize) succeeded.");
  57
  58   p = NULL;
  59
  60   ret = posix_memalign (&p, sizeof (void *), 0);
  61
  62   if (ret != 0 || p == NULL)
  63     merror ("posix_memalign (&p, sizeof (void *), 0) failed.");
  64
  65   free (p);
  66
  67   ret = posix_memalign (&p, 0x300, 10);
  68
  69   if (ret != EINVAL)
  70     merror ("posix_memalign (&p, 0x300, 10) succeeded.");
  71
  72   ret = posix_memalign (&p, 0, 10);
  73
  74   if (ret != EINVAL)
  75     merror ("posix_memalign (&p, 0, 10) succeeded.");
  76
  77   p = NULL;
  78
  79   ret = posix_memalign (&p, 0x100, 10);
  80
  81   if (ret != 0)
  82     merror ("posix_memalign (&p, 0x100, 10) failed.");
  83
  84   if (ret == 0 && p == NULL)
  85     merror ("returned success but pointer is NULL");
  86
  87   ptrval = (unsigned long)p;
  88
  89   if (ret == 0 && (ptrval & 0xff))
  90     merror ("pointer is not aligned to 0x100");
  91
  92   free (p);
  93
  94   return errors != 0;
  95 }
  96
  97 #define TEST_FUNCTION do_test ()
  98 #include "../test-skeleton.c"