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glibc  2.9
Functions
bug7.c File Reference
#include <stdio.h>

Go to the source code of this file.

Functions

int main (int argc, char *argv[])

Function Documentation

int main ( int  argc,
char *  argv[] 
)

Definition at line 6 of file bug7.c.

{
  int lose = 0;
  char filename[L_tmpnam];
  FILE *fp;

  if (tmpnam (filename) == NULL)
    {
      printf ("tmpnam failed\n");
      lose = 1;
    }
  else
    {
      fp = fopen (filename, "w+");
      fprintf (fp, "Hello world!\n");
      fflush (fp);
      fseek (fp, 5L, SEEK_SET);
      if (fseek (fp, -1L, SEEK_CUR) < 0)
       {
         printf ("seek failed\n");
         lose = 1;
       }
      fclose (fp);
      remove (filename);
    }

  {
    FILE *file1;
    FILE *file2;
    char filename1[L_tmpnam];
    char filename2[L_tmpnam];
    int ch;

    if (tmpnam (filename1) == NULL || tmpnam (filename2) == NULL)
      {
       printf ("tmpnam failed\n");
       lose = 1;
      }
    else
      {

       file1 = fopen (filename1, "w");
       fclose (file1);

       file2 = fopen (filename2, "w");
       fputc ('x', file2);
       fclose (file2);

       file1 = fopen (filename1, "r");
       file2 = freopen (filename2, "r", file1);
       if ((ch = fgetc (file2)) != 'x')
         {
           printf ("wrong character in reopened file, value = %d\n", ch);
           lose = 1;
         }
       fclose (file2);
       remove (filename1);
       remove (filename2);
      }
  }

  puts (lose ? "Test FAILED!" : "Test succeeded.");
  return lose;
}

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