stdio-common/tst-vfprintf-width-prec.c

   1 /* Test for memory leak with large width and precision.
   2    Copyright (C) 1991-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <mcheck.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <sys/resource.h>
  23 #include <wchar.h>
  24
  25 static int
  26 do_test (void)
  27 {
  28   mtrace ();
  29
  30   int ret;
  31   {
  32     char *result;
  33     ret = asprintf (&result, "%133000.133001x", 17);
  34     if (ret < 0)
  35       {
  36         printf ("error: asprintf: %m\n");
  37         return 1;
  38       }
  39     free (result);
  40   }
  41   {
  42     wchar_t *result = calloc (ret + 1, sizeof (wchar_t));
  43     if (result == NULL)
  44       {
  45         printf ("error: calloc (%d, %zu): %m", ret + 1, sizeof (wchar_t));
  46         return 1;
  47       }
  48
  49     ret = swprintf (result, ret + 1, L"%133000.133001x", 17);
  50     if (ret < 0)
  51       {
  52         printf ("error: swprintf: %d (%m)\n", ret);
  53         return 1;
  54       }
  55     free (result);
  56   }
  57
  58   /* Limit the size of the process, so that the second allocation will
  59      fail.  */
  60   {
  61     struct rlimit limit;
  62     if (getrlimit (RLIMIT_AS, &limit) != 0)
  63       {
  64         printf ("getrlimit (RLIMIT_AS) failed: %m\n");
  65         return 1;
  66       }
  67     long target = 200 * 1024 * 1024;
  68     if (limit.rlim_cur == RLIM_INFINITY || limit.rlim_cur > target)
  69       {
  70         limit.rlim_cur = target;
  71         if (setrlimit (RLIMIT_AS, &limit) != 0)
  72           {
  73             printf ("setrlimit (RLIMIT_AS) failed: %m\n");
  74             return 1;
  75           }
  76       }
  77   }
  78
  79   {
  80     char *result;
  81     ret = asprintf (&result, "%133000.999999999x", 17);
  82     if (ret >= 0)
  83       {
  84         printf ("error: asprintf: incorrect result %d\n", ret);
  85         return 1;
  86       }
  87   }
  88   {
  89     wchar_t result[100];
  90     ret = swprintf (result, 100, L"%133000.999999999x", 17);
  91     if (ret >= 0)
  92       {
  93         printf ("error: swprintf: incorrect result %d\n", ret);
  94         return 1;
  95       }
  96   }
  97
  98   return 0;
  99 }
 100
 101 #define TEST_FUNCTION do_test ()
 102 #include "../test-skeleton.c"