| 1 | #include <stdio.h> |
|---|---|
| 2 | #include <string.h> |
| 3 | |
| 4 | #include <support/xstdio.h> |
| 5 | |
| 6 | char x[4096], z[4096], b[21], m[4096 * 4]; |
| 7 | |
| 8 | int |
| 9 | main (void) |
| 10 | { |
| 11 | FILE *f = tmpfile (); |
| 12 | int i, failed = 0; |
| 13 | |
| 14 | memset (x, 'x', 4096); |
| 15 | memset (z, 'z', 4096); |
| 16 | b[20] = 0; |
| 17 | |
| 18 | for (i = 0; i <= 5; i++) |
| 19 | { |
| 20 | fwrite (x, 4096, 1, f); |
| 21 | fwrite (z, 4096, 1, f); |
| 22 | } |
| 23 | rewind (f); |
| 24 | |
| 25 | xfread (ptr: m, size: 4096 * 4 - 10, nmemb: 1, stream: f); |
| 26 | xfread (ptr: b, size: 20, nmemb: 1, stream: f); |
| 27 | printf (format: "got %s (should be %s)\n", b, "zzzzzzzzzzxxxxxxxxxx"); |
| 28 | if (strcmp (b, "zzzzzzzzzzxxxxxxxxxx")) |
| 29 | failed = 1; |
| 30 | |
| 31 | fseek (f, -40, SEEK_CUR); |
| 32 | xfread (ptr: b, size: 20, nmemb: 1, stream: f); |
| 33 | printf (format: "got %s (should be %s)\n", b, "zzzzzzzzzzzzzzzzzzzz"); |
| 34 | if (strcmp (b, "zzzzzzzzzzzzzzzzzzzz")) |
| 35 | failed = 1; |
| 36 | |
| 37 | xfread (ptr: b, size: 20, nmemb: 1, stream: f); |
| 38 | printf (format: "got %s (should be %s)\n", b, "zzzzzzzzzzxxxxxxxxxx"); |
| 39 | if (strcmp (b, "zzzzzzzzzzxxxxxxxxxx")) |
| 40 | failed = 1; |
| 41 | |
| 42 | xfread (ptr: b, size: 20, nmemb: 1, stream: f); |
| 43 | printf (format: "got %s (should be %s)\n", b, "xxxxxxxxxxxxxxxxxxxx"); |
| 44 | if (strcmp (b, "xxxxxxxxxxxxxxxxxxxx")) |
| 45 | failed = 1; |
| 46 | |
| 47 | return failed; |
| 48 | } |
| 49 |