libio/tst-memstream1.c

   1 #include <mcheck.h>
   2 #include <stdio.h>
   3
   4
   5 #ifndef CHAR_T
   6 # define CHAR_T char
   7 # define W(o) o
   8 # define OPEN_MEMSTREAM open_memstream
   9 #endif
  10
  11 #define S(s) S1 (s)
  12 #define S1(s) #s
  13
  14
  15 static void
  16 mcheck_abort (enum mcheck_status ev)
  17 {
  18   printf ("mecheck failed with status %d\n", (int) ev);
  19   exit (1);
  20 }
  21
  22
  23 static int
  24 do_test (void)
  25 {
  26   mcheck_pedantic (mcheck_abort);
  27
  28   CHAR_T *buf = (CHAR_T *) 1l;
  29   size_t len = 12345;
  30   FILE *fp = OPEN_MEMSTREAM (&buf, &len);
  31   if (fp == NULL)
  32     {
  33       printf ("%s failed\n", S(OPEN_MEMSTREAM));
  34       return 1;
  35     }
  36
  37   if (fflush (fp) != 0)
  38     {
  39       puts ("fflush failed");
  40       return 1;
  41     }
  42
  43   if (len != 0)
  44     {
  45       puts ("string after no write not empty");
  46       return 1;
  47     }
  48   if (buf == (CHAR_T *) 1l)
  49     {
  50       puts ("buf not updated");
  51       return 1;
  52     }
  53   if (buf[0] != W('\0'))
  54     {
  55       puts ("buf[0] != 0");
  56       return 1;
  57     }
  58
  59   buf = (CHAR_T *) 1l;
  60   len = 12345;
  61   if (fclose (fp) != 0)
  62     {
  63       puts ("fclose failed");
  64       return 1;
  65     }
  66
  67   if (len != 0)
  68     {
  69       puts ("string after close with no write not empty");
  70       return 1;
  71     }
  72   if (buf == (CHAR_T *) 1l)
  73     {
  74       puts ("buf not updated");
  75       return 1;
  76     }
  77   if (buf[0] != W('\0'))
  78     {
  79       puts ("buf[0] != 0");
  80       return 1;
  81     }
  82
  83   free (buf);
  84
  85   return 0;
  86 }
  87
  88 #define TEST_FUNCTION do_test ()
  89 #include "../test-skeleton.c"