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glibc  2.9
Defines | Functions | Variables
bug-ungetc3.c File Reference
#include <stdio.h>
#include "../test-skeleton.c"

Go to the source code of this file.

Defines

#define PREPARE(argc, argv)   do_prepare ()
#define TEST_FUNCTION   do_test ()

Functions

static void do_prepare (void)
static int do_test (void)
static int do_one_test (int mode)

Variables

static const char pattern [] = "12345"
static char * temp_file

Define Documentation

#define PREPARE (   argc,
  argv 
)    do_prepare ()

Definition at line 6 of file bug-ungetc3.c.

#define TEST_FUNCTION   do_test ()

Definition at line 8 of file bug-ungetc3.c.


Function Documentation

static int do_one_test ( int  mode) [static]

Definition at line 28 of file bug-ungetc3.c.

{
  FILE *f;

  f = fopen (temp_file, "r");
  if (f == NULL)
    {
      printf ("could not open temporary file: %m\n");
      return 1;
    }

  if (mode == 1 && ftell (f) != 0)
    {
      printf ("first ftell returned wrong position %ld\n", ftell (f));
      return 1;
    }

  if (fgetc (f) != '1' || fgetc (f) != '2')
    {
      puts ("fgetc failed");
      return 1;
    }

  if (mode == 2 && ftell (f) != 2)
    {
      printf ("second ftell returned wrong position %ld\n", ftell (f));
      return 1;
    }

  if (ungetc ('6', f) != '6')
    {
      puts ("ungetc failed");
      return 1;
    }

  if (ftell (f) != 1)
    {
      printf ("third ftell returned wrong position %ld\n", ftell (f));
      return 1;
    }

  if (fgetc (f) != '6')
    {
      puts ("fgetc failed");
      return 1;
    }

  if (ftell (f) != 2)
    {
      printf ("fourth ftell returned wrong position %ld\n", ftell (f));
      return 1;
    }

  fclose (f);

  return 0;
}

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static void do_prepare ( void  ) [static]

Definition at line 15 of file bug-ungetc3.c.

{
  int fd = create_temp_file ("bug-ungetc.", &temp_file);
  if (fd == -1)
    {
      printf ("cannot create temporary file: %m\n");
      exit (1);
    }
  write (fd, pattern, sizeof (pattern));
  close (fd);
}

Here is the call graph for this function:

static int do_test ( void  ) [static]

Variable Documentation

const char pattern[] = "12345" [static]

Definition at line 11 of file bug-ungetc3.c.

char* temp_file [static]

Definition at line 12 of file bug-ungetc3.c.