fseek_test.c

1 #define _FILE_OFFSET_BITS 64
2 #include <stdio.h>
3 #include <stdlib.h>
4 #include <errno.h>
5 #include <sys/types.h>
6 main()
7 {
8   FILE *fp ;
9   long long y ;
10   int retval ;
11   int result1 ;
12 #ifdef TEST_FSEEKO
13   off_t x ;
14   off_t result2 ;
15 #endif
16 #ifdef TEST_FSEEKO64
17   long long x ;
18   int result2 ;
19 #endif
20   fp = NULL ;
21   fp = fopen( "Makefile" , "r" ) ;
22 #ifdef TEST_FSEEKO
23   x = 0xffffffff ;
24   result1 = (sizeof(x) == 8) ;
25   result2 = fseeko( fp, x, SEEK_SET ) ;
26 #endif
27 #ifdef TEST_FSEEKO64
28   x = 0xffffffffL ;
29   result1 = (sizeof(x) == 8) ;
30   result2 = fseeko64( fp, x, SEEK_SET ) ;
31 #endif
32   if ( result2 ) perror("error") ;
33   fprintf(stdout,"pointer is 8 bytes: %s\n",result1?"true":"false") ;
34   fprintf(stdout,"seek returns correctly: %s\n",!result2?"true":"false") ;
35   if ( result1 && !result2 ) { 
36     fprintf(stdout,"status: OK\n") ; 
37     retval = 0 ;
38   } else { 
39     fprintf(stdout,"status: BUMMER\n") ;
40     retval = 1 ;
41   }
42   fclose(fp) ;
43   exit(retval) ;
44 }
45